Et notat fra en av våre partnere: Noen ganger ser lekser i fysikk seg ut til å være vanskelig. I slike tilfeller kan du finne hjelp med hjemmet ditt med fysikk lekserhjelp på Hjemmebord. Jeg har lært kurs i Introduksjonsfysikk ved Antelope Valley College i Lancaster, CA og Cleveland Chiropractic College i Hollywood, CA. Dette er studievilkårene jeg gir studentene mine og er supplerende til spørsmålene i læreboken. Du kan gjerne bruke dem på noen måte du ønsker. Jeg vil oppdatere dette området etter hvert som tiden tillater det. Svarene følger et par uker etter at spørsmålene er lagt ut. Ett notat: På grunn av begrensningene i webpublisering bruker vi quotEquot til å indikere at et tall blir multiplisert med den angitte effekten på ti. For eksempel betyr 3,5 E-3 3,5 ganger ti til -3-effekten. Fysikk 1 --- Kapittel 1 Studieark 1) En snegl kan reise med en hastighet på 2,3 tommer per minutt. I samme takt, hvor mange miles vil det reise i et år 2) Konverter 3.675 E5 Mg til ng. 3) En rektangulær blokk av beryllium måles og er funnet å være 2,48 cm bred, 5,77 cm lang og 1,8 cm høy. Hva er volumet i kubikkmeter 4) En riktig trekant har en 68deg vinkel. Den tilstøtende siden til den vinkelen måler 16 meter. Hva er området for trekanten 5) Hvor mange signifikante tall har følgende a) 34.6 b) .000045050 c) 60000 d) 3.400 E-8 e) 9200006 6) Konverter disse desimaltallene til vitenskapelig notasjon: a) 6190000 b ) .0000000000577 c) 12 d) .9 e) 30000000 7) Konverter disse vitenskapelige notasjonsnumrene til desimaltall: a) 4.508 E-5 b) 6.88 E11 c) 3.81 E-1 d) 4 E2 8) Gi x og y koordinater for følgende punkter gitt i polarkoordinater: a) (54. 30deg) b) (600. 45deg) c) (87.5. 18deg) 9) Gi r og theta for følgende punkter gitt i rektangulære koordinater: 10) Planet X er kjent for å ha en masse på 2,85 E24 kg. Forutsatt at det er en perfekt sfære i form, og dens diameter er 5,59 E6 m, beregner dens tetthet. 11) Solens masse er 2 E30 kg, og massen av hydrogenatomet, som solen hovedsakelig består av, er 1,67 E-27 kg. Hvor mange hydrogenatomer er i solen 12) Den grunnleggende funksjonen til en bilforgasser er å atomisere bensin og bland den med luft for å fremme rask forbrenning. Anta at 50 kubikkmeter bensin er forstøvet i N sfæriske partikler, hver med en radius på 2,0 E-5 m. Hva er det totale overflatearealet til disse N-sfæriske dråpene 13) Lysets hastighet er 3,00 E8 ms. Hvis avstanden fra solen til jorden er 93.000.000 miles, hvor lang tid tar det for lys å komme hit fra solen (en kilometer 1609.344 m) 14) Andromeda-galaksen er ca 2 E6 lysår fjernt. Sneglen i problem 1 ville ta hvor lang tid å komme dit dersom det kunne gjøre det 15) Hvor mange nanojouler er i en kilojoule 16) En sementbil laster sement til en uteplass med en hastighet på 25 kubikkmeter sement per time . Uttrykk det i kubikkfot per minutt. 17) Bruk et diagram, beskriv forskjellen mellom nøyaktighet og presisjon. 18) En 30deg-60deg-90deg trekant har en hypotenuse på 24 meter. Hvor lenge er siden motsatt 60deg-vinkelen 19) Avled uttrykket (sin x) 2 (cos x) 2 1. 20) Hvis synd q 817, finn cos q. 21) Veien som fører fra Halloran Summit til Las Vegas er 83 miles lang. Hvis vi antar at veien er en rett linje og den generelle nedgraderingen er .35deg, beregne den totale nedstigningen, i føtter, mellom de to punktene. 22) En velvillig veiviser springer inn i livet ditt en dag og forteller deg at han vil gi deg en milliard dollar hvis du kan bruke alt i livet ditt med en hastighet på nøyaktig en dollar hvert sekund. Får du moolahen 23) To poeng er gitt i polarkoordinater som (3.30deg) og (6. 150deg). Hva er avstanden mellom de to punktene 24) De fleste store liga-pitchers kaster en fastball som har en hastighet på 90 miles per time. Forutsatt at avstanden fra kassen til hitteren er 60 fot, hvor lang tid skal batteren reagere når ballen har forlatt krukkehånden 25) En viss vestkyststrand er 3000 meter lang, 30 meter bred og 4 meter dyp . Hvis sandkorn er perfekte kuber og måler .25 mm på en side, hvor mange sandkorn er der i stranden Fysikk 1 --- Kapittel 2 Studieark 1) En ny bil-reklame sier at den nyeste bilen kan gå fra null til 60 miles i timen på 7,5 sekunder. Hva er akselerasjonen i SI-enheter 2) En tur på Magic Mountain plummer ryttere rett ned fra en høyde på ti historier. Gitt at gjennomsnittshistorien er tolv meter høy, hvor fort går turen når den når bakken, i SI-enheter. (3,281 ft 1 m) 3) Billy rider sykkelen nedover en overfylt boulevard på 25 miles per time. Plutselig stikker en stor søppelbil ut i veien, omtrent 70 meter foran ham. Hva må hans retardasjon være igjen i SI-enheter, slik at Billy og hans sykkel ikke blir en del av lastebilen. Anta at Billy treffer bremsene umiddelbart etter å ha sett trucken. 4) AV College damer softball team har en treningsøkt i parken. Heather kan løpe rundt basene (60 ft fra hverandre) og berøre hjem igjen på 16,6 s. Hva er hennes forskyvning Hva er hennes gjennomsnittshastighet Hva er hennes gjennomsnittshastighet 5) En av jentene treffer en lang hjemmebane og ballen sitter fast, ca 10,5 m oppe i et tre. En av lagkameratene mener at hun kan kaste en annen ball opp for å slå den ned. Hva er minimumshastigheten som er nødvendig for den kastede ballen å forflytte ballen fast i treet (forutsatt at et trykk er alt det trenger) 6) Et skateboard, akselerert fra hvile med konstant hastighet, opplever en forskyvning på 44 m i 20 s. Hva er akselerasjonen 7) En bowlingkulle slippes i ro fra toppen av Washington-monumentet. Den treffer bakken etter å ha falt i 6,0 s. Forutsatt at luftmotstanden er ubetydelig, hva var høyden fra hvilken ballen ble falt 8) Planet Dirtbag er kjent for å ha tyngdekraften bare to femtedeler av jorda. Hvis en Dirtbaggian hulaball projiseres vertikalt fra bakken med en hastighet på 63,7 ms, hvor lang tid vil det ta for hulaball å berøre overflaten av planeten 9) Når en viss dragster når en hastighet på 80 ms, begynner det en negativ akselerasjon ved å slippe en dragrute og bruke bremsene. Mens hastigheten reduseres til null, er akselerasjonen en konstant -7,5 mss. Hvilken forskyvning gjennomgår den under denne decelerasjonsperioden 10) En stein kastes nedover fra toppen av et tårn med en innledende hastighet på 14 ms. Hvis steinen treffer bakken etter 3,0 s, hva er tårnens høyde 11) Michael Johnson satte verdensrekord i OL i 1996 ved å kjøre 200 meter dash i 19.32. Hvor fort var gjennomsnittshastigheten i SI-enheter Hvor fort er dette i miles per time 12) Menneskelig reaksjonstid er i gjennomsnitt ca. 18 s. Den velvillige trollmannen dukker opp igjen i livet ditt og forteller deg at han vil holde tusen dollarregning rett over din åpne tommel og pekefinger og vil slippe det et øyeblikk. Lengden på regningen er 15,5 cm. Hvis reaksjonene dine er gjennomsnittlige, vil du fange pengene eller la det glide gjennom fingrene. Antag at regningen faller rett ned uten luftmotstand. 13) Avstanden fra jorden til solen er 93.000.000 miles. Finn jordens hastighet i sin bane om solen. 14) Et jernbanetog går fra punkt A til punkt B med en hastighet på 80 miles per time og returnerer med samme rute ved 100 miles per time. Hva er gjennomsnittshastigheten for rundreisen 15) To menn, hver med et baseball, står på toppen av en bygning. Hver mann kaster sine baseball i en hastighet på 16 ms, en rett opp og en rett ned. Den første treffer gaten i en tid t1. Hvor mye senere er det for den andre ballen å slå på gaten (når det gjelder t1) 16) Konstruer en forskyvningstidsgraf med følgende spesifikasjoner: a) Fra t0 til t2 s kjører kroppen på en konstant 2 ms b) Fra t2 til t4 s forblir kroppen bevegelig c) Fra t4 til t7 s går kroppen på en konstant 1 ms d) Fra t7 til t9 s, reiser kroppen på en konstant -3 ms e) Fra t9 til t10 s , er legemet ubevisst. Hva er den endelige forskyvningen av kroppen fra startposisjonen. Hva er dens gjennomsnittshastighet 17) Følg følgende graf og beskriv bevegelsen i hvert intervall: (Grafen oversette ikke til HTML-kode. beklager) 18) En crazed fysikklærer hopper ut av et fly og akselererer med tyngdekraft til en maksimal hastighet på 58,8 ms på 6 s. Han åpner deretter sin fallskjerm og etter en fire sekunders retardasjon, stiger han ned på 10 ms i 60 sekunder og når bakken. Fra hvilken høyde hoppet den galne fysikklæreren Fysikk 1 --- Kapittel 3 Studieark 1) Forklar forskjellen mellom en vektor og en skalar og gir tre eksempler på hver. 2) Løs ligningen: sin kvadrert theta cos kvadratet theta 1. 3) Forklar hvilke aritmetiske kombinasjoner av skalarer, vektorer og konstanter som er tillatt og hva deres resultater er. 4) En mann tar sin gravide kone til sykehuset for å levere en baby. De bor 14,0 km sør og 11,5 km øst for sykehuset. Hvis de reiser uhindret med en konstant hastighet på 25 ms, hvor mye tid ville de spare ved å reise i en direkte diagonal linje enn ved rektangulære gater som de måtte 5) Legg disse to kraftvektorene analytisk: F1 (16 N, 50deg) F2 (12 N, 190deg). 6) En myr på et piknikbord går 30 cm østover, deretter 25 cm nordover, deretter 10 cm vestover. Hva er størrelsen og retningen til nettforskyvningen fra utgangspunktet 7) Tre menn kombinerer å utøve 370 N i en vinkel på 15deg over vannrett som de skyver deres ødelagte 1964 Impala (du vet, den med grå lys i hjulet brønner, dingle baller og tuck-and-roll interiør) til en service garasje. Hva er de parallelle og vinkelrette komponentene av deres kombinerte kraft i forhold til bakken 8) Fem duggbilleer kjemper over en dungball og skyver med en lik kraft, men i forskjellige retninger. De skyver inn i disse fem retningene: nord, nordøst, sørvest, øst og nordvest. Hvilken retning vil ballen gå 9) Raul Mondesi kaster et baseball fra dyp høyre felt helt til tredje base i fly. Bollen kastes ved en innledende hastighet på 32 ms og ved en innledningsvinkel på 27deg i forhold til horisontalplanet. Hvis ballen er fanget av Todd Zeile i tredje på samme høyde som hvor den ble kastet, og ballen er i ferd med nøyaktig 3,0 sekunder, hvor langt gikk Raul ballen, det vil si, hva er ballens horisontale forskyvning 10) A stor viltjeger er ute på safari i de dypeste junglene i Zimbabwe. Han ser sitt byttedyr, en spettet ingefærab, 30 meter over ham i et tre som står 20 meter unna. Han vet at det nøyaktige øyeblikket han brenner sitt rifle, apen vil slippe fra brystet og falle til bakken for å unngå å bli rammet av kulen. Hvor langt, over eller under apen, må jakten sikte mot å slå apen 11) En NFL quarterback ønsker å kaste en fotball til en bred mottaker 30,0 m nedover banen. Hvis han vet at han kaster med en innledende hastighet på 18,0 ms, i hvilken vinkel må han kaste ballen for å få mottakeren ballen 12) En redningshelikopter dropper forsyninger til et band med strandede oppdagelsesreisende. Hvis helikopteret er 150 meter over bakken og beveger seg med en konstant hastighet på 40 ms, hvor langt foran oppdagerne må omsorgspakken slippes til land på sin posisjon 13) En stein kastes i en vinkel på 30deg over horisonten med en innledende hastighet på 12 ms fra toppen av en klippe hvis høyde er 120 m. Hva er størrelsen på de horisontale og vertikale komponentene av steinhastigheten øyeblikkelig det rammer bakken 14) Ingen har noen gang sprang en lengde på 30 fot. Gitt at den absolutte topphastigheten som en mann kan kjøre er 25 miles i timen, finn vinkelen der han må hoppe, i forhold til det horisontale, til å hoppe over 30 meter. 15) Dan Marino tar ballen på linjen med scrimmage, går bakover for 10 meter, deretter sidelengs, parallelt med linjen med scrimmage for 15 meter. Deretter kaster han en 40 gårdsplass fremover, rett rett nedover, vinkelrett på linjen av scrimmage, hvor mottakeren hans er taklet umiddelbart. Hvor langt har fotballen blitt forskjøvet fra sin opprinnelige posisjon 16) For å kvalifisere seg med M-16-geværet i den amerikanske hæren, må en soldat slå mål på 300 meter unna. En soldat retter seg rett mot bullseye, men finner at kulen treffer 4 inches under bullseye. Hva er kulens starthastighet (Her ignorerer luftmotstanden, selv om det er en reell faktor.) 17) En tosidig trekkbrygge virker feil foran bilen og gir et gap på 12 meter mellom de to spannene på broen. Hvis spannene er forhøyet 22deg i forhold til horisontalplanet, hva må bilens minimumshastighet være for å kunne trygt lande på motsatt side av broen 18) Det høyeste fjellet på Mars er Olympus Mons, som stiger 22 000 meter over Mars-overflaten. Hvis vi skulle kaste et objekt horisontalt av fjellet, hvor langt borte, diagonalt, fra kastepunktet på fjellet ville objektet lande. Gravitasjonen på Mars er .38g. 19) Mickey Mantle treffer et baseball med en hastighet på 44 ms og i en vinkel på 30deg over det horisontale. Et 5 m høyt gjerde ligger i en horisontal avstand på 132 m fra det punktet hvor ballen rammes. Forutsatt at ballen forlater hans flaggermus 1 m over bakken, finn hvor mye avstanden ballen fjerner gjerdet av. 20) Det er en vanlig fortelling om George Washington at han var i stand til å kaste en sølvdoll på tvers av Potomac-elven. Forutsatt at elven er 75 meter bred, og han kastet dollaren i en 45-graders vinkel, finn den minimale innledende hastigheten som er nødvendig for å kaste mynten over elven. Fysikk 1 --- Kapittel 4 Studieark 1) Forklar forskjellen mellom masse og vekt. 2) Angi Newtons tre bevegelseslover og gi et eksempel på hver. 3) Forklar de to generelle typene friksjonskrefter og hvordan de brukes. 4) Forklar forskjellen mellom klassisk (Newtonian) og relativistisk (Einsteinian) mekanikk. 5) En blokk av tre med masse 40 kg opptrer med en konstant kraft på 12 N. Hvor fort vil blokken bevege seg etter tre sekunder 6) Accelerasjonen på grunn av tyngdekraften på planeten Barf er 3,5 ganger hva den er på planeten Jorden . Dermed vil et gjenstand med masse 22 kg på jorden ha den massen på planeten Barf 7) Accelerasjonen på grunn av tyngdekraften på planeten Drek er 1,7 ganger hva den er på planeten Jorden. Dermed ville et objekt med masse 160 kg på Drek ha vekt på planeten Jorden 8) En vogn med vekt 300 N akselereres over en jevn overflate ved .5 mss. Hvilken nettkraft virker på vognen 9) En heis som veier 30000 N, støttes av fire identiske stålkabler. Hva er spenningen i hver kabel når heisen blir akselerert oppad med en hastighet på 2,5 mss 10) En horisontal kraft på 650 N er nødvendig for å overvinne statisk friksjonskraft mellom et gulv og en 220 kg kasse. Hva er koeffisienten for statisk friksjon mellom trekassen og betonggulvet 11) En seilbåt med masse 2500 kg opplever en østlig kraft på 4500 N ved havvannet og en vindstyrke mot seilene med størrelsen på 5500 N rettet mot nordvest , det vil si 45deg nord for vest. Hva er den resulterende akselerasjonen i både størrelse og retning 12) En full boks med masse 240 tonn i hvile blir koblet fra toget på en 12deg-skråning. Hvis sporet anses å være friksjonsfritt (neppe mulig selvsagt), hvilken hastighet har esken etter 8,0 sekunder 13) Du kjører bilen til skolen en dag når du må bremse plutselig. Hvis du reiser med en hastighet på 35 ms, har bilen din en masse på 1800 kg, og din bremsekraft er en konstant 8000 N, hvor langt går bilen din før du kommer til en fullstendig stopp 14) Mark McGwire rammer en innkommende 42 ms fastball. Bollen forlater flagget på 54 ms etter en ball-on-bat-kontakttid på .03 s. Hvilken kraft utøves på .15 kg baseball 15) Kristi Yamaguchi beveger seg på isen på 12 ms og kaster seg til en stopp på 140m på en jevn, jevn isoverflate. Hva er friksjonskoeffisienten mellom isen og skøytene 16) Thelma og Louise bruker et tau for å trekke en trygg ut av en bank som veier 1200 N over en jevn overflate med konstant hastighet. Tauet gir en 20deg-vinkel over horisontalen og spenningen i tauet er 250 N. Hva er friksjonskoeffisienten 17) Et 30 kg trafikklys henger midt mellom to poler 50 m fra hverandre. Hvis sagen i kabelen er 0,75 m, hva er spenningen i hver side av kabelen 18) Du kjører til San Francisco og parkerer bilen foran vennskapshuset ditt på en heller tilbøyelig gate. Du vet at friksjonskoeffisienten mellom dekkene dine og gaten er m. 78. Hva er den bratteste vinkelen, q, at du kan parkere bilen din (hjulene er låst) uten å glide nedoverbakke 19) Ingemar Stenmark var på ski på 22 ms ned en 30deg snøhelling, da han oppdaget en stor lapp av våt snø. Den våte snøen hadde en friksjonskoeffisient på m. 67. Hvor langt nedover bakken gikk han før han stoppet 20) En 150 N slede er trukket opp en 28deg skråning med konstant fart med en kraft på 100N. Nær toppen av hellingen blir sleden utgitt. Med hvilken akselerasjon går sleden nedover bakken Fysikk 1 --- Kapittel 5 Studieark 1) Beskriv sammenhengen mellom arbeid, energi og kraft, vis ekvivalensen til enhetene WFd cos q og KE 12 mv2. 2) Gi tre eksempler på potensiell energi og måtene den omdannes til kinetisk energi. 3) Beskriv forskjellen mellom konservative og ikke-konservative krefter. 4) Beskriv Hookes Law og dens forhold til potensiell energi lagret i en vår. 5) Robin Hood skyter en pil rett opp med en innledende hastighet på 65 ms. Bruk kun energibesikt og forsøm ikke luftmotstand, og finn maksimal høyde på pilen. 6) Hva er den minste mengden energi som kreves for en 80 kg klatrer som bærer en 20 kg pakke for å klatre Mt. Everest, en topp 8850 m høy 7) En 60 N-kasse trekkes opp et 7 m skråplan med konstant hastighet. Hvis flyet er skrånende i en vinkel på 25deg til det horisontale og det eksisterer en konstant friksjonskraft på 8 N mellom kassen og overflaten, hva er nettovinst i potensiell energi ved kassen i prosessen 8) Hva er det kinetisk energi på en 5 oz. baseball kastet på 90 miles per time 9) En hauger driver kjører et 3500 kg innlegg gjennom en høyde på 6,5 m på hvert slag. Hvis den motstandsdyktige kraften i bakken er 3,5 x 106 N, hvor langt inn i jorden er det store innlegget som kjøres på hvert slag 10) En 55 kg kvinne løper opp i Empire State Building-trappene, en vertikal stigning på 320 m, på 9,5 minutter . Hvor mye arbeid gjorde hun? Hvilken gjennomsnittlig kraft leverte hun? 11) Et enkelt pedal, 1,2 m langt, frigjøres fra hvile når støttestrengen er i en vinkel på 38deg fra loddretten. Hva er hastigheten på den suspenderte massen på bunnen av svingen 12) En annen enkel pendel, en 1,8 m lang, slippes med et trykk nedover når støttestrengen ligger i en vinkel på 27deg fra loddretten. Hvis starttrykket gir den en starthastighet på 1,4 ms ved utløpspunktet, i hvilken maksimal vinkel vil den bevege seg i den andre halvdelen av sin sving 13) Arbeidet med statisk friksjon er alltid: A) positiv B) negativ C) null D) mot bevegelsesretningen E) langs overflaten 14) Du slår en tennisball mot en vegg og legger merke til at ballen bare har 34 av sin opprinnelige hastighet når den hopper tilbake. Hvilken del av sin kinetiske energi mistet det under kollisjonen med veggen 15) Du og vennene dine utøver en kraft på 3500 N i en vinkel på 12deg til horisontal og skyver nedbrutt primergrå 1964 Impala med dingle baller, tuck and roll interiør, to ganger rør, grå lys i hjulbrønnene, og quot Crystal Blue Persuasionquot malt på bakglasset. Bilen har en masse på 1500 kg. Du oppnår en akselerasjon på 1,7 mss over en avstand på 10 meter. Hvilken kraft av friksjon virker for å forsinke bevegelsen av bilen Hvor mye arbeid er gjort av deg og dine venner 16) Du sykler deg ned en bakke. Din totale masse er 54 kg. På toppen av bakken er hastigheten din 5 ms. Bakken er 18 m høy og 165 m lang. Hvis friksjonskraften er 20 N, hva er hastigheten din på bunnen av bakken 17) Den gamle trofaste geyseren i Yellowstone Park skyter vann i en høyde på 40 meter nesten hver time. Ved hvilken hastighet må vannet forlate bakken 18) Grossbarger T. Zyglewicz, en polsk vektløfter, kan løfte 250 kg til en høyde på 2 meter i 1,75 sekunder. Hvor mye arbeid gjør han og hva er effekten hans 19) Siste gang du gikk på ski, la du merke til at fartbåten krevde 85 kW for å bevege seg med en konstant hastighet på 18 ms. Hva er vannets motstandskraft ved denne hastigheten 20) Brett Butler kaster et .15 kg baseball med en hastighet på 40 ms og ved en startvinkel på 22deg fra en høyde på 2 m. Hva er de kinetiske og potensielle energiene til ballen på høyeste punkt i sin bane 21) Min MR2 sportsbil har en masse på 1120 kg og akselererer fra null til 25 ms i 7,8 s. Hva er gjennomsnittlig hestekraft levert av motoren (1 hk 746 W) 22) En fjærplattform er konstruert for en stuntmann som skal brukes til å simulere resultatene av en nærliggende eksplosjon. Hvis våren komprimeres en avstand på .375 m, kan den starte en 70 kg stuntmann til en høyde på 6 m når den slippes loddrett fra hvilen. Forsinkelse av alle resistive krefter, bestemme vårekonstanten og hastigheten til stuntmannen når han passerer likevektsposisjonen (x 0) til våren. Fysikk 1 --- Kapittel 6 Studieark 1) Beskriv forholdet mellom kraft, momentum, tid, masse og hastighet. 2) Beskriv prinsippet om bevaring av momentum beskrive hvordan det gjelder todimensjonal bevegelse samt lineær bevegelse. 3) Beskriv forskjellen mellom elastiske og perfekt uelastiske kollisjoner og gi et eksempel på hver. 4) En 55 kg rulleskøyter akselererer fra hvile til en hastighet på 18 ms på 4,0 s. Hva er hennes forandring i momentum Hvilken kraft må ha blitt brukt Bekreft ditt svar ved hjelp av mekanikkens prinsipper. 5) En svømmer hopper horisontalt av en aluminiumskiff (liten båt) med masse 175 kg. Svømmere hastigheten umiddelbart etter å ha forlatt skiffen er 3,2 ms. Hvis skiffen beveger seg med en hastighet på 1,25 ms, hva er svømmerens masse 6) En 4800 kg buss beveger seg ved 28 ms rammer inn i en parkert bil og låser støtfangere ettersom de to kjøretøyene fortsetter nedover veien på 19 ms. Hva er massen av den parkerte bilen 7) En 65 g racketball, som først beveger seg horisontalt på 47 ms, smelter inn i veggen og returer med en hastighet på 39 ms. Hva er dens forandring i momentum 8) En hærhermitser med masse 3200 kg brenner et 70 kg skall med en hastighet på 220 ms i en vinkel på 40deg over det horisontale. Gitt at howitzeren rider på friksjonsløse hjul, hva er returhastigheten til høvdingen langs nivået som den ligger på 9) En maskinpistol er festet til en jernbane flatbil med masse 1,45 x 105 kg som kan rulles med ubetydelig friksjon. Hvor mange kugler med masse 16 g må sparkes på 330 ms fra baksiden av pistolen, slik at jernbanen oppnår en fremdriftshastighet på 1,0 ms 10) Roger Clemens kaster en 150 g baseball på Junior Griffey med en hastighet på 42 ms. Batteren treffer ballen rett tilbake på potten med en returhastighet på 58 ms. Hvis flaggermuset er i kontakt med ballen for .045 s, hvilken impuls opplever ballen?) En pendelbob med masse 50 g er suspendert fra en streng 1,4 m lang i en vinkel på 28deg fra loddretten. Hvis pendulen frigjøres fra hvile og slår en 80 g ispuck på det laveste punktet i sin sving, hva vil ispuckens fart være hvis alle pendulens momentum overføres til pucken 12) Et lastet gods med masse 45 000 kg kaster med en konstant hastighet på 2,2 ms langs et horisontalt spor. Den kolliderer og parrer med en tom, ubevegelig jernbane med masse 20.000 kg. Hvilken prosentandel av den opprinnelige kinetiske energien til det større toget er beholdt av det etter kollisjonen 13) Hvis momentet til en gjenstand økes med en faktor på 9, av hvilken faktor er dens kinetiske energi endret 14) Hvis den kinetiske energien til en objektet er kuttet med 50, hvordan endrer momentet sin 15) En 3 kg ball som reiser østover på 6 ms kolliderer elastisk med en 4 kg ball som beveger seg vestover ved 3 ms. Hva er de endelige ballastene etter kollisjonen 16) En biljardkule som kjører på 1,4 ms treffer to identiske baller slik at en ball ruller av ved 40deg i forhold til retningen til slående ballen, og de andre rullene på -50deg. Gitt at slående ballen er ubevegelig etter kollisjonen, hva er forholdet mellom hastigheten til den første slått ballen til den andre slått ballen etter kollisjonen 17) En 7,4 kg bowlingball slår en 1,8 kg bowling pin. Tappen flyter fremover med en hastighet på 6,2 ms mens ballen fortsetter fremover med en hastighet på 3,9 ms. Hva var bowlingballens originale hastighet 18) En biljardkule som beveger seg på 2,7 ms treffer en stasjonær ball med samme masse. Etter kollisjonen beveger den opprinnelige ballen fremover med en hastighet på 2,1 ms i en vinkel på 34deg i forhold til sin opprinnelige bevegelse. Finn hastighet og retning av den slått ballen etter kollisjonen 19) Emmitt Smith, masse 105 kg, kjører nordover på 11 ms. Han er taklet i en uelastisk kollisjon av Kjøleskap Perry, masse 155 kg, løpende sør på 4 ms. Hva er den endelige hastigheten til de to spillerne like etter taket 20) En 10 g kulde blir sparket inn i en 200 g blokk av tre i hvile på en horisontal overflate. Etter støt skjuler blokken 8,0 m før den kommer i hvile. Hvis friksjonskoeffisienten er m 0,4, finn kulehastigheten før støt. Fysikk 1 --- Kapittel 7 Studieark 1) Forklar forholdet mellom lysbue, vinkelforskyvning og radius i sirkulær bevegelse. Konverter radianer til grader og omvendt. 2) Forklar avledningen av vinkelhastighet og dens forhold til lineær (eller tangensiell) hastighet. 3) Forklar derivasjonen av tangensiell akselerasjon og dens forhold til lineær akselerasjon. 4) Forklar vektoregenskapene til sentripetalkraft, centripetal akselerasjon, tangentiell akselerasjon og lineær hastighet. 5) Beskriv Newtons lov om universell gravitasjon i både symboler og ord. 6) Oppgi og beskriv Keplers tre lover av planetarisk bevegelse. 7) En helikopter har rotorbladene 3,5 m lange og roterer ved 650 rpm. Hva er tangentiell hastighet for hver bladspiss og hva er centripetal akselerasjon som må virke 2,2 m fra rotasjonsaksen 8) En 650 g masse, festet på enden av en 83 cm streng, svirles rundt i en sirkulær horisontal sti . Hvis maksimal spenning strengen kan tåle er 480 N, hva er maksimal hastighet massen kan ha hvis strengen ikke skal bryte 9) En radius slipeskive på 1,180 m, som starter i ro, utvikler en vinkelhastighet på 12,5 rad i et tidsintervall på 3,65 s. Hva er centripetal akselerasjon av et punkt .116 m fra midten når hjulet beveger seg med en vinkelhastighet på 12,5 rad 10) Et pariserhjul som roterer i utgangspunktet med en vinkelhastighet på .58 rad, akselererer over et 8.3 sekunders intervall på en hastighet på .047 radss. Hva er vinkelhastigheten etter dette tidsintervallet og hvilken vinkelforskyvning (i radianer og grader) gjennomgår pariserhjulet i 8,3 s 11) En 35,0 kg bowlingkule blir transportert til overflaten av planet X hvor det er funnet å ha en vekt på 1450 N. Radius av planeten er kjent for å være 4,55 x 10E6 m. Hva er massen av planet X (G 6,67 x 10-11 Nmiddotm2kg2) 12) Hva er vinkelhastigheten rundt sentrum av jorden for en person som står på ekvator 13) Hvis jordens diameter er 7827 miles, beregne du lineær hastighet på grunn av jordens rotasjon for en person som står ved jordens ekvator. 14) Ledningen til en gresshacker er 0,18 m i lengden. Hvis motoren roterer med 24 omdreininger, hva er tangentiell hastighet på enden av ledningen Chris Tingom i Whimsical 4 oktober 2006 Hopping fra et bevegelige tog 8211 Virkelige tips du kan bruke Det skjedde for meg i kveld at det ikke er noen instruksjoner gitt i Skoler om hvordan man skal hoppe riktig fra et bevegelige tog. Dette er et stort tilsyn. Folkene som kommer opp med pensum skal være skuffet over seg selv. Bare for å få ting startet, presenterer jeg dette hypotetiske matematiske spørsmålet. Husk, dette bruker 8216new8217 matte. Alan reiser på et godstog som beveger seg på 43 mph, og hans venn Jeremy er på motsatt jernbane som reiser mot ham ved 27 mph. Forutsatt at Alan hadde en frokost med egg og appelsinjuice, hva er riktig rulleteknikk han burde bruke for å unngå skade. Se, that8217 er så mye mer pedagogisk enn ditt typiske matematiske spørsmål. Dette er virkelige ting du kan bruke. hvis du tenker på deg selv: Jeg har aldri måttet hoppe av et bevegelig tog. Du gjør en feil. Ingen planlegger å hoppe av et bevegelige tog. De befinner seg bare i en dårlig situasjon, og hopping er det eneste valget. Her er noen vanlige grunner til at du kanskje trenger å hoppe fra et bevegelige tog: Du blir jaget av James Bond, og han praktiserer å hoppe fra å flytte tog ofte. Broen er ute fremover, absolutt på grunn av beververe. Din venn hoppet bare ut og han har nøklene. Du finner deg selv i en konkurranse for den beste hoppe - og rulleteknikken, og du sparer bare livet ditt. Du kommer på toget og innser for sent at alle de andre passasjerene er Elvis-impersonators. Toget ditt har en atomvåpen om bord. Som du kan se, er det en rekke tilfeller hvor hopping fra et bevegelige tog kanskje bare er ditt eneste alternativ. Disse situasjonene er alltid en overraskelse. Det er derfor hvorfor det lønner seg å lære riktig hopp og rulle teknikk. For sikkerhets skyld. Plus, det gjør flott samtalefôr ved din neste sosiale sammenkomst. Hoppe fra toget mens det beveger seg oppoverbakke eller sakte. Se på for å skrape som kan forårsake skade. Hopp når du er i nærheten av smuss eller gressletter, hvis du kan. Når du hopper, planlegg rullen din over en skulder, rull inn i en ball Stå sakte opp og sjekk For skade, vil du sannsynligvis trenge å ta pusten. Hopp alltid alltid fremover, ellers kommer du til å ende opp med rumpen din bakover. Vær sikker på at du ikke biter tungen. Det er BrainFuel tips for hvordan du kan hoppe fra et bevegelige tog. Alltid bringe deg det beste innholdet. Advarsel: Hopping fra et bevegelige tog er veldig farlig. Hvis du ikke tror meg, les dette. Jeg kunne ikke gjøre matte fordi vi bruker metriske ned under. I8217ve kjente personer som pleide å holde på vindusviskerne på et tog og ri den mens de flyttet fra stasjon til stasjon, flott måte å få en gratis tur på. Ville være en dårlig måte å dø, at disse tipsene er veldig viktige. De fortalte meg at det var en slags virvel på baksiden av toget (ligner hva syklister drar på lastebiler) mens de er i bevegelse som skapte en slags stilk, så mye at du kunne holde en samtale på mobiltelefonen din . Now if your other mobile phone was to ring or you had to scratch whilst in the middle of a conversation on the first mobile you would have to let go of what you were hanging on to, which would cause your journey to end. Knowing how to land correctly would be vital to your survival. I have also been told stories about people putting their feet on the tracks and holding onto the back of the train, known as train surfing. This would surely kill you. Etter hvert. You mention that this might be dangerous, but I propose that after learning these instructions it is safer than jumping on the bed 8230at least for me. When I was 8 years old, I was jumping on my parents bed showing them how I could do the gymnastics moves they were watching on the 1988 olympics. I had not been taught how to safely jump on the bed in school (yet another terrible oversight), so I didn8217t know that step 7 for jumping from a train also applies to jumping on the bed As you may have guessed by now, I was laughing while jumping on the bed. as I came down to jump again, my knee found itself underneath my chin while my head was rapidly descending. My jaw obviously closed, and, well, my tounge was in the way. 3 hours, one trip to the emergency room, 7 stitches in my tounge, and an average crying level of 96dB SPL (A weighted), I had my tounge back in one piece. But pay special attention to step 7 above, because if you8217re jumping from a train you8217re likely farther from an emergency room than I was at home I can verify that train surfing can and does take place. I would have seen it going on in Germany. But the dangers of train surfing became all too apparent to me one evening when I was waiting for my S-Bahn home. There I was waiting for my train, trains coming and going, no big excitement. Then I heard someone whooping and hollering. I looked around to see some dude hanging on to the back of the train. He was kinda hanging out the side at the back and seemed to be having a mighty fine time of it going his whooping and hollering, never mind the large grin on his face. Anyway as the train picked up speed, I duno maybe hadnt thought it throught, but as it pulled out of the station, all the time picking up speed, and as the platform got shorter and shorted for him he had to make a decision. Hang on or jump off. he jumped. wrong decisionhe went head first into an all too stationary pole Not a pretty sight. Good news is that he survived but the bad news is that he both shat and pissed himself, as a result of the impact or from fright I dont know. And here is a wonderful photo to go along with this post. I am an avid cliffbridge jumper. I have a dream to jump off of a moving train at a local swimming hole, where the railroad bridge crosses the river. Has anyone heard of anyone attempting anything like this The train usually goes 40-50 Mph across the bridge, and the river is 50 feet wide at best. I need some more input on this before I even think about attempting. Help me if you can.. Dude, you8217d miss the river for sure. Don8217t try that. Plus, hitting water at that speed could kill you. Train Hopping 1974 In 1974 I hopped a freight train for fun and adventure with a young man, Eric, who I had met that afternoon. He was my age8230mature teenagers. We were bored hip-kids living in Ashland, Oregon. We found a ride into the next state, California, so we could ride the train back home. Once In the train yard we climbed up and held onto the ladder nearest a open boxcar door. After the train started moving faster8230 Eric determined that it was 8220going the wrong way.8221 It was heading south from Dunsmire, into California. He said, 8220Jump8221 and he jumped. He landed feet first and running with the direction of the train. I had a split second, as a girl, to either jump or ride alone. I had no pack, of course no cell phone, and was dressed for summer weather. The seconds that passed between his command and my decision resulted in a much faster train speed. It had also greatly increased the distance traveled from him. I chose to jump. I jumped as though into a swimming pool. I had no idea what else to do. I simply said, 8220God, please help me.8221 I hit the gravel and hard dusty berm below with an impact. I8217m guessing the train was going about 18 mph. I rolled and tumbled like a cartwheel and finally landed on my butt8230upright. I began to cry. But not wanting to appear like a baby, I pulled myself together, stood up and said, 8220It8217s OK. I8217m alright.8221 At that age, I didn8217t realize the gravity of the danger of what I was doing. I could have died that day in numerous ways: a door sliding shut on us, my clothing getting caught on something, a broken back or neck, or fell under the wheels. Please read the advice, everyone, about these very real dangers. I don8217t know why I was unharmed, God had a plan for my life I suppose. As Providence would have it, we both brushed ourselves off and reboarded a train with an open boxcar that was starting-up for Northbound towards home. The trip back was an experience of wonder and beauty. We didn8217t speak much, we just wanted to get back home8230 safe. As we wound our way far from the highway and towns we found ourselves passing areas that only can been seen by rail. The sun setting casting an orange glow on Mt. Shasta8217s snowy top was stunning. We passed a waterfall that flowed under the train trestle. The train climbed slowly over the Siskiyou Mt. s as the sunset turned into a cobalt blue star filled sky. Chilled, we just huddled in the boxcar door trying to stay warm. When we arrived in Ashland the train slowed at a crossing and we simply stepped off a block from Eric8217s place and I walked home a short distance away. Later, a friend remarked, 8220Where did you get this Levi8217s shirt. It looks like it was mauled by a lion.8221 It was the shirt I was wearing that day. No blood but the back was shredded. I would like to mention that my Great Grandfather was a Colorado Railroad man during the Great Depression era. He was not a conductor but a professional rail supervisor. Perhaps his spirit rode me that day. I never saw Eric again8230he was traveling through and we lost contact. I was in Oregon just for a summer. The memories remain in my mind like faded photographs. Today, by an act of Congress, train hopping is a federal offense in the USA8230.and don8217t forget it And, don8217t forget my brush with death on that beautiful California summer day. I was very fortunate. Next time I want a rail journey I will simply buy a ticket and view the scenes from my window while reading the history of train-hopping. Q: Alan is travelling on a freight train which is moving at 43 mph, and his friend Jeremy is on the opposite railway travelling towards him at 27 mph. Assuming that Alan had a breakfast of eggs and orange juice, what is the proper roll technique he should use to avoid injury A: Alan probably could have used just about any rolling technique without injury cause alan wasn8217t jumping from a train. He8217s still on the freight train. It didn8217t say anything about Alan jumping from train. If he was a vegatarian. He might of puked from not eating flesh(eggs) for awhile and puked on jeremy at insane 70mph. Jeremy could of fell and hurt(injury) his back from the massive force of Alan8217s vomit. Then the only thing hurt(injury) is Jeremy8217s back and feelings cause he didn8217t get chill with Alan. Having jumped off a freight train I can attest that this article is pretty spot on.. The uphill part is key. My problem was the train never went under 40km hr (outback australia). Key reason for getting off my friend had just jumped. Stay or go. time to go.. yes I saw some trains jump tracks back in in late 1969 went I live there and after that I WENT TO (aoc )(EDGAR)ok there were some boys klcking to pay (phone ) it number was 705-722-9238 but now it is a store some were in barrie Ontario were at I don8217t no at this time but I will get the name of the store after that went come back here I will tell you the name of it but one of the (boys ) name ) was (mr) Dave or David) last name was (judge ) not like in count room it was the way it was put down by that name only I will give you my name you can call me at any time today at is (705)(323) (9596)MR (Mike )( Callwell) one was color and one was white as well.) this was (at)(AOC)(EDGAR)in (BARRIE ONTARIO)(L4M-4W3) OK it not open no more at all it end after the staff (put)there hands) on us noy that there was some kicking going on out there in Lynnwood only . thankyou warren facey here my phone 705 323 9596 . Write a CommentPenis size is an important matter to many men, so its natural that you may want to increase the size of your penis. But the question is how to do it and what to use If you are looking to increase the size of your penis or improve the hardness of your erections youve probably done a little research online into the methods that you could use to achieve your desired results. Usually, a search for male enhancement will suggest links for penis pills, penis pumps (vacuums) and penis stretchers, but you may not be aware that penis pills and pumps will not actually increase the size of your penis. There is a lot of evidence behind these points, but the ineffectiveness of penis pills is a topic beyond this article as there are many aspects to consider. They may result in better erections or a temporarily larger erection, but in actuality, the only way to permanently, effectively increase the size of your dick is to use a penis stretcher. Which is the best penis stretcher to use If youre set on the idea of increasing the size of your penis and you understand that using a penis stretcher is the best way to go, its time to take a look at whats on the market and decide whats best for you. However, to save you the time and trouble of reading countless descriptions and reviews on various products, why not read on to learn more about the Phallosan 2 in 1 Male Enhancement System This device is different from other penis stretchers on the market. It is specifically designed to both improve your erections and increase your penis size through stretching. But what makes it stand out amongst similar stretching devices is its unique design. But whats so unique about it The Phallosan 2 in 1 Male Enhancement system combines the technique of a traditional penis stretching device with the extra added power of a vacuum pump for optimal enhancement. Could this be a good thing or a bad thing Lets find out. As the Phallosan 2 in 1 Male Enhancement System combines two effective penis enhancement and enlargement methods, men who choose to use it are increasing their chances of getting better results and a faster rate. The vacuum suction element of the device will improve blood flow to the penis which will help to ensure bigger, better, stronger erections, whilst the actual stretching element itself will be the most effective aspect, helping to increase the penis size permanently and significantly. If youre wondering how a penis stretching device works, it will create tiny tears in the penis tissue which triggers cell division and natural penis growth as they begin to heal in their new, larger form. Dont worry the process is entirely painless When compared to other penis stretching devices you may have used in the past, the device is bigger and heavier, so the idea of wearing it under your pants is unlikely to work out. Penis stretchers need to be worn daily for at least 30 minutes, so its important you have somewhere you can commit to a stretching schedule. As it is difficult to wear the device unnoticeably, the device will need to be worn at home. If youre busy with long work hours or social commitments, this can be a significant downside. Is the Phallosan 2 in 1 Male Enhancement System right for me If youre hoping for a larger, better looking penis with stronger, harder erections leading to a better sex life, the Phallosan 2 in 1 Male Enhancement could be exactly what youre looking for. By going directly to purchase a device that you know is a cut above the rest, youll be saving yourself the trial and error of finding something that works for you. If youre at home a lot and have no issues wearing the Phallosan on a daily basis, youll be just fine. However, if youre often outside, meeting with people, walking or exercising, the Phallosan device may be too large for your lifestyle and another stretching device could be a better option. Its clear to see how the Phallosan 2 in 1 Male Enhancement system could be beneficial to any man looking to improve the size of his dick and experience better erections, but of course all benefits come at a price. If youve weighed up the pros and the cons, chances are youll have a clear idea of whether the device is for you. If so, order it today and take the first step towards better sex. Your Ultimate Guide to G-spot Stimulation One of many mens biggest concerns when it comes to getting naked in the bedroom is their penis size. Theyre always afraid it will be too small and that their woman will be disappointed or that they wont be able to please her as well as someone with a bigger penis. Thats honestly the biggest myth in the world of sexual pleasure. The truth is, many women actually dont pay much attention to the size of your penis. Nope. They pay attention to how well you use it. Aka: if you know what youre doing, your penis size doesnt matter at all. OR, if you do belive you need a bigger dick go to biggerpenisadvice. org NOW In fact many men think that their penis is too small when its actually of average size. And anatomy proves that men dont actually have to have porn star sized dicks in order to full please their woman and hit their G-spot. Do You Really Need a Bigger Penis The honest answer is probably a no. Although you may think that youre small, youre probably average and maybe even above average. The womans G-spot is actually only 2-3 inches inside her vagina on the front wall. Thats why you only really need to slip a couple fingers into her in order to actually hit it. However, an inch or two more is usually needed when having sex in order to stimulate the G-spot. The average penis size is actually about 5-6 inches when erect. This means that the majority of men the ones who are worrying about their size actually dont need a larger penis at all. Theyre basically all the perfect size. So no, you probably dont need a bigger penis . The G-spot is like a magic button that causes a woman to orgasm if pressed over and over again. So what you need to do to stimulate it is just that G-spots can even be stimulated using only fingers. You can use that in foreplay to really get her going before beginning intercourse. G-Spot Sex Positions While you can stimulate her G-spot in really any sex position, there are a few that do so MUCH more than others and are more smaller-penis friendly. If youve got the average penis size or even an inch smaller youre probably doing just fine. But these position will certainly give you an advantage to getting your girl off. Doggy Style Doggy style is always the perfect position to stimulate the G-spot because it allows the women to have control. This means that they can actually tilt their pelvis and adjust their body so you can hit that spot just right. This is great because you men dont even have to do any work Spooning Another perfect position. This puts you right in line for her G-spot without moving around at all. As long as the two of you are front to back, your penis will go right in and run into her G-spot making it the ultimate G-spot stimulator. Missionary with a Pillow Although missionary may not be every mans favorite position, its a really great one for stimulating her G-spot. One tip that will make it much easier to reach her G-spot is to put a pillow under her butt. This lifts her torso and causes you to line up directly to where you need to be. Many men think that a large penis means youve got it made and all the ladies would LOVE to get in on some of that action. This is a false way of thinking. Although not all men with bigger penises experience these downfalls, here they are. It Doesnt Fit The truth is that a womans pleasure canal is only about 5-6 inches long when theyre aroused. This means that anybody with a longer penis doesnt exactly have it made. They cant even fit their whole penis in so its less pleasure for them. No Blow Jobs I know this will get your attention. Women are MUCH less likely to give oral sex if a man has a large penis. Its Painful If their penis is too long, it will repeatedly hit a womans cervix (the end of her vagina) which is an extremely sensitive spot. So IT HURTS. And if its too wide, it will stretch them out and thats also quite painful. Its Intimidating Its true Some women take one look at a very large penis and immediately are just scared. They can be very intimidating because women dont want to go through any pain during sex and a big penis will make them fear the pain. So do you really need a bigger penis The truth is probably not. If you want to up your G-spot stimulation game, just take a look at all of the tips above Sometimes, its normal to want to enhance your penis for better sexual health and performance, but when faced with the prospect of questionable pills or confusing devices, you may prefer to take an all-natural approach. Thats okay Read on to discover how. There are number of ways you could enhance your penis shape, size and health using natural methods without having to resort to pills, supplements or devices. Whichever method you choose to increase your sexual experience and heighten your pleasure, your goal will be the same to make your erection harder and to prolong the time spent during intercourse. Really, its as simple as that. Think of it this way: An erection is an essential part of sex you cannot do it without, and the harder the erection is, the better the pleasure will be. Which leads us on to the fact the better the pleasure, the longer and more enjoyable the sex will be, resulting in a stronger, more powerful orgasm. To put it simply, what youre in need of is better penis health The idea of a healthy penis is very simple to understand. Having great penis health means you will be able to get an erection whenever you want it, your erection is as strong as it should be to have enjoyable, successful sex, and you last as long as you want resulting in a mind-blowing orgasm for both your pleasure and your partners. Ive heard of penis pills and enlargement devices, but Id really prefer a natural approach. Is that possible Yes 8211 yes it is You may not have realised this, especially as the internet is all about promoting various products, many of which dont even work Luckily, there are things you can do at home that are both free and safe to improve the health of your penis without the need to take any pills or supplements and without the use of any equipment such as pumps or extending devices. The term jelq refers to the technique of stretching your penis with your hands. When you use your hands to massage and rub your penis, you are improving the blood flow in the process, as well improving your overall penis health. Plus, as if those benefits werent enough already, youll also be gently adding some stretching power through your hands as you force the natural growth and expansion of your penis. However, despite the positive benefits of the jelq technique, Its important to remain realistic when it comes to deciding your goals. No matter how much you massage, stretch or even pull on your penis, its not going to suddenly grow another two inches in a matter of weeks Truthfully, you probably wont see much of an increase when using this technique if any. But what you will see is a better, stronger, harder and possibly larger erection that will lead to greater sexual satisfaction and a better time for you and your partner in the bedroom. Start Stop Masturbation Start stop masturbation involves building up the stamina you have during intercourse, learning to control your ejaculation and achieving stronger orgasms as a result. This method of masturbation is the only way that you can teach your body to know how to move and control your pleasure the way you want it to, as well as leaving it up to YOU to decide when you ejaculate. By doing so, youll get to enjoy the sensual pleasure of sexual intercourse for as long as you want and come when you please, meaning you wont disappoint your partner by ejaculating too soon. While it may seem a little risky, some men have even managed to control their ejaculation so well that they can have safe sex without having to use a condom helping to improve their sexual experience through increased sensitivity and the touch of your partner. Whichever of these methods you decide to try out, you can rest easy in the knowledge they are both free and safe for you to test out as much as you want. Surely that makes them worth a try before you shell out a lot of cash on various pills or stretching devices. Give these exercises a go and youll soon be experiencing life with a healthier, stronger penis. There are more than 100 penis extender brands available in the market and choosing the best one could be a tedious and very long process. Browsing and comparing each one can take up many hours of time. Not to mention the advertising and extra marketing material found everywhere you research, finding a legitimate and honest feedback is nearly impossible. Its not easy to differentiate between various penis extenders to discover the one which is actually the best. By performing a careful search on the market, you may find these brand names: SizeGenetics, Vimax Extender, X4Labs, Proextender, Euroextender, Ultimate Stretcher, Jes Extender, Maleedge, etc. Following are some things you should consider before buying a penis extender: The first thing you should consider is the ease of use. A penis extender must have a comfort mechanism which should allow you to wear it with comfort and ease all day. Ease of use is very important because for better results the extender should be worn for as long as possible. Thats why, it is critical that it does not cause any issues that could interfere with your lifestyle and daily routine. In this modern era, you should consider pure facts, evidence, and real testimonials before buying a product, not claims. Therefore, go for a penis extender which is clinically supported by research, number of trials, and has been recommended by doctors and other health experts. It should be clinically proven to enlarge your penis as well as improve overall sexual pleasure and performance. A best way to verify credibility is to look at penisextendershq and check whether the product has been certified by health care providers and recommended by trustworthy medical practitioners. Keep in mind that an extender that works naturally should be your preference. A natural penis extender should have two features. First, it should have a powerful traction to stretch the tissues of penis in a natural way and induce 8220division and cell manipulation8221 resulting in a natural growth of the penile. Secondly, it should maintain the erection of penis for a long time by drawing blood to the tissues of penis. In simple words, if above mentioned features are available in the extender, then thats the mode of working you should be looking for. A penis extender must be tested for potential hazards and potency and should be backed up with the latest science and research available. Additionally, a good production source or facility is a major factor in guaranteeing the best quality . Therefore, always look for trustworthy brands that have been around in that business for some time to make sure what is labeled on the product is not only safe but also exactly what is featured in the product. There are various brands rated by PenisExtendersHQ that are reliable and have presented significant results of penis enlargement. Thats why, you should never compromise for less quality. Just because a manufacturer says a product is natural doesnt mean it is safe. Thats why, you should do your research before buying a natural penis extender. Carefully read the authentic testimonials and check whether the product has been certified by a global and reliable authority on health. It should have a high safety profile. Ideally, it should not cause any discomfort or skin marks after a long term use. Additionally, user tolerance and compliance is a major problem you should consider while buying the best penis extender. Generally, all penis extender brands claim to have no side effects. It is true if you are talking about the top brands because they actually dont have any side effects and are safe to use. Careful use of the product is another factor as you should take caution when using it. Most extenders are only required to be used on the penis for maximum of five hours per day. If the required time to use is labeled on the product, then you should not use any longer than that. There are many high quality penis extender brands available in the market (mentioned above). But personal research and careful inspection is necessary to get the most out of them as well as avoid any issues. All things considered, buy the one which is not only free from side effects but also viable. A 100 effective penis extender should help you achieve a thicker and larger penis as well as should produce longer and stronger erections. When you look at the number of stores and websites selling sex toys, not to mention the size of most dildos on the market, it can be a little unnerving. Men may begin to feel as if their penis simply cannot compare to the size of the dildos their girlfriends or wives may use on a regular basis. If youre afraid that you could be replaced by a sex toy, its time to take a look at which really works the best for sexual satisfaction: a small dick or a big dildo Women often say that the size of your dick is irrelevant and that may be true to an extent, but at the same time, she will of course value her sexual pleasure too. Theres a reason most dildos on the market are on the larger side, and thats due to demand. The manufacturers would have no need to make those products if they werent likely to sell, so obviously women are buying them when they visit sex stores or websites. Dildos on average range from around 6 7 inches long to 15 and beyond, and are usually very girthy. In comparison, your dick may look a little on the smaller side It can often leave you wondering whether longer and thicker are really the key aspects that women want to see in their partners penis. In the USA alone, over 50 of women admit to owning and regularly using a vibrator or dildo. Women who enjoy such toys may become used to them as time goes on, only to be left disappointed when faced with a realistic penis. Women also enjoy the fact that a dildo will never come first the fun doesnt stop until shes ready. The short answer is YES Whether your dick is large, average or even on the small side, you can ensure it can compare to a dildo even of the larger variety. First, youll need to work out exactly what you currently dislike about your dick. Is it too short Too thin Do you ejaculate too soon Are your erections weaker than youd like No matter what the problem is, there is a way to resolve it. So which really does work the best Honestly, while women may love the feel of using a large dildo or other sex toys, they are likely to choose a real man over plastic any day, as long as they are attracted to men sexually. If they dont like real dicks of any kind, you dont stand a chance, so you should probably look elsewhere. If your partner loves you andor finds you sexually attractive, she will feel pleasure from your dick and enjoy having sex with you instead of a toy especially if youve taken the steps to boost your penis size and sexual experience. There are a number of ways you can ensure your penis is worthy of comparison to your partners dildo. Why not try a few out and see which works the best for you Penis Pills . The term penis pills refers to male enhancement products that aim to improve your erections and create a positive, satisfying sexual experience. They are also known for boosting your libido. However, although marketing alongside products that may enlarge your penis, penis pills will not have that effect. Herbal Supplements . If your problem is that you come too soon during sex, there are certain herbal supplements that may be able to help. Take a look around your sexual supplier of choice and ask for their help if necessary. Penis Pumps . A penis pump, also known as an erectile dysfunction pump is a device that will help you achieve harder, healthier erections and last longer in bed. While your dick may appear bigger during use, these effects are not permanent. Penis Extenders . A penis extender, also referred to as a penis stretcher or stretching device is the only way that you can effectively and permanently increase the length, girth and overall size of your dick. These devices gently pull on the penis using traction therapy to stretch it to the desired size. Whichever method you choose to improve the size and shape of your dick, your partner will certainly appreciate it and youll find yourself proving to be better than the dildo every time. Most people believe sex is overrated in a relationship, while others believe there are several reasons why sex is important with your partner. When you love someone, it can connect you and your partner in way unlike any other. Apart from the connecting part to spend the time with your other half, there are many other benefits too. Following are some reasons that explain why good sex is important for a better relationship: It is one of the best reasons why good sex is important in a relationship. Obviously getting physically involved with each other is going to bring the two of you closer. Sometimes being in love and being attracted to each other does not mean that sexual chemistry is there. But that chemistry does come together once you find you and your partner in the bedroom. The best relationship you can have is with somebody who is your best friend as well as your lover. If you are in a relationship without sex, you might as well be dating just a best friend. Its simple as that. Passion is necessary for a relationship. Relationships need sexiness and excitement. Sex with your partner is the only factor that keeps the passion alive. It makes the relationship stimulating, desirable, and fun. When you are in a relationship, you want your partner to know you completely from inside and out. The more sex you have with your partner, the better she will get at making you happy. Thats why you should have sex whenever you can. When you have sex with somebody, they8217re allowing you to see a side of them that only a few people may have seen. It makes you special. By having sex with your partner, you will learn what makes her happy and you will know her better than anyone else. Sex promotes reassurance, intimacy, and shows you and your partner that you are needed and wanted. Sex is a great way to make you both happy. It lets your partner know that you can still make time for one another. Sex a great way of communication. It assures your other half that all is well and the love is still there. It not only begins with romance but also ends with romance, because both sexes feel the need to cuddle after sex. Besides, good sex life provides a confidence boost for both genders and it shows that both partners are still interested in every aspect of their relationship. It is natural that the couples who have sex more often, express more feelings. They feel the need to hug, touch, and kiss more often and have no problems with showing this romantic behavior in public. This is because the sex causes the body to produce more oxytocin, which triggers the need to love someone. You feel great about yourself if you make love with your partner more often. And if you are not, you wonder where else she is getting it. Having a good intimate time with your partner shows her that you are committed and you are in love with her. Sex is a great way to break up your routine and recharge at the end of the day. If you do the usual routine on a daily basis, try to have sex at random times. It will keep your relationship with your partner spontaneous and hot. Sex makes women feel needed and wanted. Simply put, having sex makes your girlfriend feel great about herself. If you8217re in a relationship but have no sex with your partner, shes is not fully satisfied. It8217s a simple deduction that if your girlfriend is not satisfied with your sex life, shes going to start looking for sex from somebody else. The purpose of being in a relationship is to make yourself and your partner happy. Sex is fun, so why not relax yourself and enjoy it You dont need an excuse to have sex. If sex makes you happy then its the only reason you need. Sex is like a glue that is needed in a relationship to make it strong. It puts you in tune with your partner and reconnects you. Sex keeps your relationship alive. Whether youre suffering from erectile dysfunction or simply wish to make your dick look bigger and harder during sex, you may have considered buying a penis pump to help you have a more satisfying sex life and give your confidence a boost. Penis pumps are readily available and can easily be bought online. Once you give them a try, the manufacturers promise the pump will fix your sexual problems and give you larger, harder erections. But is that true A penis pump is a device that is designed to help you enjoy bigger, harder erections and last longer in bed. They are often marketed to help combat erectile dysfunction, although they cannot cure the symptoms directly. A penis pump uses an air vacuum which will help to draw blood to the penis. As a result, it can give your sex life a significant improvement by helping you achieve and maintain better erections. There are many different types of penis pump on the market today, which can make shopping for one a little complicated. Its important to work out what exactly you hope to get out of using a penis pump in order to determine which kind is right for you. There are two kinds of penis pump to choose from, both of which are available on the market today from most suppliers of sexual products both online and offline. The first type is the air assisted penis pump. These are very affordable to purchase and can be bought virtually anywhere that sells sex items. That said, they tend to be cheap for a reason. Air assisted penis pumps are lower in quality and may not provide the significant results you are looking for. The second, and better kind of penis pump is a water assisted pump, which is not only more likely to give you results, its also safer. Water assisted penis pumps are often recommended by sexual health professionals as a remedy for men who have trouble maintaining their erections. They are also the pump of choice for thousands of industry professionals, so its clear to see how theyre the more reliable option. Even better water assisted penis pumps can double up and be used as air pumps if thats what youre looking for, however regular air pumps cannot be used with water. Essentially, when you buy a water assisted penis pump, youre effectively buying both kinds in one, saving you money and allowing you to try out different techniques. This way, youll be able to discover precisely what works for you. Finally, all water assisted pumps on the market today will have been fully tested for safety, reliability and effectiveness during the design and manufacturing process, so you wont have to worry about safety or success as you use it. Once youve got your hands on your brand new penis pump, youll no doubt be excited to start using it and seeing the results But before doing so, its important to familiarise yourself with the product and make sure you understand the best ways to use it to achieve your goals. What is it you want out of a penis pump If youre looking to cure erectile dysfunction completely, thats not going to happen with a penis pump. Derimot . penis pumps can be of great help to those suffering with the condition. While they cant help you get an erection to begin with, using a pump will increase blood flow to the penis and help you maintain your erection for much longer once you have it, helping you to stay hard until you and your partner are ready to stop. If youre simply looking to make your dick appear bigger and harder, youll be guaranteed success with a good quality penis pump You should aim to use your penis pump for around 10 minutes every day, even on days you do not plan on having sex. You should also use it shortly before having sex to ensure your erection is at its best before getting started. After learning more about penis pumps and the way they could improve your sex life, why not try them out for yourself Youll experience better erections, higher self-esteem and improved sexual experiences. Without having to worry about maintaining an erection, youll be able to take it easy and enjoy the moment without worrying about your dick. Every day, hundreds, even thousands, of men search online for ways to increase the size of their penis. One of the first things that come up in these searches is usually penis stretching. There are a number of ways that penis stretching can be done, and each site you visit will likely tout a different method or product and it8217s effectiveness. Unfortunately, these sites are often more full of myths than they are facts. Hand Stretching Facts and Fiction There are a number of penis stretching exercises that are supposed to be a quick and easy way to help you achieve a harder, longer-lasting erection, or a bigger penis. Unfortunately, this method is simply completely ineffective. When you think about it, this really isn8217t surprising if having a bigger penis was that easy, men all over the world would simply stay at home masturbating and pulling on their penis. Not only is this method of penis stretching completely ineffective, it can actually cause you to eventually completely lose your interest in having actual sex. A penis pump is a device that usually consists of a tube that is fitted over the penis and connected to a vacuum pump type of device, either a hand pump, plunger, or electric pump. The air pumping in and out of the tube supposedly increases blood flow to the penis, quickly providing you with longer, stronger erection. Not only is this not truly possible it can actually be dangerous. Over-pumping is a very common occurrence with penis pumps, and one of the leading causes of penis injury. If you overpump, you can cause the penis to fill with too much blood, bursting blood vessels and casing pain and injury. You8217re not likely to want sex at all for quite some time after that, completely defeating the purpose of using the pump to begin with. At best, you may end up with a quite massive erection that is not only painful, but very likely to subside as soon as you remove the pump. This is one device that may actually work to improve the quality of your erection and lengthen your penis but that doesn8217t mean that you shouldn8217t proceed with caution. Many extenders are very poor quality, producing no results at all. With the ones that do work and can prove that they are high-quality and medically approved, you still need to be very careful. Overextension of the penis can be extremely painful, putting you completely off sex for quite some time. If you do choose to use a penis extender, you can expect the process to take anywhere from six months to a full year before you achieve noticeable results. On the surface, penis stretching seems like a quick and easy way to improve the quality of your erection and lengthen the penis. Chances are, you8217ve probably read dozens of articles that make it sound as if penis stretching is an excellent, well-proven, painless and safe way to not only add inches, but achieve stronger, longer-lasting erections. When you truly consider the pros and cons however, you will quickly realize that it8217s important to research carefully to ensure that you choose a method that will not only truly produce results but keep you from being injured as well. According to the British actress Maureen Lipman, the worst part of oral sex is the view. It is one of the many reasons why a lot of women dont want to perform oral sex with their lover. The view only does not turn them on. But most of the guys do want to have oral sex with their partners. If your girl always makes excuses or hesitates to perform oral sex and avoid giving you head, it might be due to many reasons. So it is recommended to first know what those reasons are. Following are some reasons why your girlfriend is not giving you oral sex: She thinks that oral sex is mostly done by prostitutes and its disgusting and degrading. She doesnt want to give you oral sex because she might be thinking Whats the point of putting in an effort in a thing which is not worth it. She has no experience of it and did not gave anyone the oral sex before, and shes scared of embarrassing herself and making an oral sex failure out of herself. She is too doubtful, maybe she has no self-confidence so she feels disappointing, maybe shes overweight or thinks that she will look stupid or silly when giving you oral sex. She is bad at giving you the oral sex, many people just dont like doing something they are bad at Your penis is either too smelly or too hairy, and you she doesnt find you attractive at all because you dont take care of yourself and other girls also find you unattractive Giving you oral sex does not turn her on because beg for it, ask her to do it, and put yourself in a lower position in your relationship. Cheap persuasion strategies and bribes rarely work (if they ever do). Usually those tactics result in even less oral sex. She has no clue how important giving oral sex for you is and she has no idea how a good oral sex can result in a better relationship with you. And you dont know how to persuade her to give you oral sex by rewarding her whenever she does what you want (gives you a good oral sex) Most of these reasons can be easily tackled by following the steps mentioned below: Its easy to solve the first thing (her considering oral sex disgusting and only reserved for prostitutes) by being as open-minded as possible. If she feels that you will see her as less valuable if she talks dirty and simply goes and sexually enjoys herself, then she won8217t do it. There is only one way to motivate her to let go and enjoy the sex instead of feeling pressured during it is by being completely confident and relaxed. Love her entire body and kiss her everywhere. She should feel that you accept every part of her. Shower, shave and groom. Your penis has to be welcoming as well as spotless. Next, you have to become more attractive to the society. Hit the gym, get a higher status, get a better job, get more social power and friends, make more money, and make a hobby of traveling to exotic places. All this contributes to you being more valuable and interesting. Quit sitting in front of the TV all day and do something interesting with your life. Build up your confidence and try to perform better in bed. All this will make oral sex more interesting to your girl. Something else you have to do is be as non-judgmental as you can. She needs to know that you will not in any way think less about her if she gives you bad oral sex. And you wont break up or dump her. Tell her that she can practice as much as she wants on you and try to make oral sex more fun to her instead of making it a chore or job. Dont try to avoid the issue. Simply tell her you want her to give you oral sex. Gently tell her if she gives you the oral sex, you will really appreciate. Remember not to force it. Let her take control of the situation by starting slowly. If she does give you oral sex, then its important that you keep the communication alive during oral sex. Send feedbacks through body language verbal communication.
No comments:
Post a Comment