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习题练习:Physics Unit26: Special Theory of Relativity



 作者: admin   总分: 61分  得分: _____________

答题人: 匿名未登录  开始时间: 23年05月01日 10:24  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are riding in a spa8tohkk6he3jtxiwpj 178 6 (l59q hs wjceship that has no windows, radios, or other means for you to observe or measure what is outside. You wish to determine if the ship is stopped 5x tkp 6q7k w 8j9lho3thh(ews81j6ijor moving at constant velocity. What should you do?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Michelson-Morley experiment was *krjtm+8 frps4a8-g. o-djz ,wmr.kzdesigned to measure

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Michelson and Morley cjq(q)eqjdy 3l/6 q9iw oncluded from the results of their experiment that

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You can build an interferometer yourself if you use the6p kby 6r3 lvk,xp nu9xz67o4z following components:

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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the relativity princm 2wh.y 6c(fsa+mtl dm;ge.1y iple.
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6#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the three unprovable assumptions jegqi atzmuvz7ksc j0e;98; ;-1c0 ie of Galilean-Newtonian relativity.
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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The theory of speciall4uqd5y kq2tzow so387 6-yuz relativity

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One of Einstein's postulates in formulating the special theory of relatiar)k zi0( p9mtvity was z(a ri9k0)mtp that the laws of physics are the same in reference frames that

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9#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the first postulate of special relativity.boorf+d d ia9 pf-)x34*c6ndh
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10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the second postulate of special relm e/rcxq2 s cn45r5luz 8au-n8ativity.
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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you were to measure your pulse rate while in a spaceship moving awadbb(sg.x( i2ttf b9t6y from the Sun at a speed close to the speed of 6ftbi2t dbx t (9(s.gblight, you would find that it was

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Relative to a stationary observer, a movinul,g,d z7r ko( eljo:2g clock

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The gamma factor is defined :9)aa tu oe7doas $\gamma = 1 / \sqrt{1- (v/c)^2}$, therefore gamma ($\gamma$)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose one twin takes a ride in a space ship traveling at a very highm+v6 8-lmuacfz 6pgu - speed to a distant star and back again, while the other +zg-6mu mval 6c f8pu-twin remains on Earth. The twin that remained on Earth predicts that the astronaut twin is

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Relative to a stationary observer, a moving objectph04o //hlib 21bp)7hnzta4o j9aafp

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object moves in a dz lvs0-y) j;b2u wxs(airection parallel to its length with a velocity that approaches the velocity of light.ayj2;wz vbux(0)s- l s The width of this object, as measured by a stationary observer,

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object moves in a direction parallel to its length with e pjl* 9r gc-w4+j5v6 b6h;1erjrnokba velocity that approaches the velo-+ bbre 5wornjj46kc1r*j9 ve6plgh ; city of light. The length of this object, as measured by a stationary observer,

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the speed of a particle approaches the speed of light, the mashv0 l*w8kw1ab s of the particle8*kwa vw hbl10

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the speed of a particle approaches the speed of light, the momentum of the atkbyn( /.es; pas/ta.y b(;e nkrticle

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spear is thrown by you at a very high speed. As it passes, you measur+f kgo + 5c,:hm69f i*n7reshxukmzi 7e its length at one-half its normal length. From this measurement, you conclude that the moving spear's mass must ch6ii:7nukm* ohs9ffmrxe7g5+ z, k +be

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What happens to the kinetic energy o e4pyn :;urew28;irtyf a speedy proton when its relativistic mass 8 re;nyyu e2w4 ir;:tpdoubles?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What happens to the total relaj fe+p (x7/g3iuo (aiativistic energy of a speedy proton when its relativistic mass doubles?i(jp/(eaou+ax37f g i

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a particle of wuau1bmm .xhfk96fz/5 g09kvmass $m$ and rest mass $m_0$. Which of the following is the correct expression for the kinetic energy of such a particle?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider two spaceships, each traveling at 0.50c in jgkwfrutd 00 *;p0x :pt5k6w ya straight line. Ship A is movingr t*tkw0j6dkf0yx5 p uw :g;0p directly away from the Sun and ship B is approaching the Sun. The science officers on each ship measure the velocity of light coming from the Sun. What do they measure for this velocity?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following depends on the observer's frame of refereg4q5dd x;k7 njsf m.a+gi-)rtnce?

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the velocity of your spaceship increases, you would obcawj:rsv (w d)7sw) lqgqpx617 n2hp6 serve

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A boat can travel 4.aj4w:)l.4:1vplcd d7y kqz q w0 m/s in still water. With what speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boat is heading ua:q14cd 4. wj7kp)lld:w qyz vpstream?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A boat can travel 4.0 m/s in still water. With w) ra,oyorbt,02b 1gxvhbb. (uhat speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boat is he.gbu (bytooa0,h b1rvr ,2)xbading downstream?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A boat can travel 4.0 m/s in still water. ft-w dta q3ee6 vm ,rc74lon60 With what speed, relative to the shore, doest0c trne 3eaq dm6o7fw- v,64l it move in a river that is flowing at 1.0 m/s if the boat is heading straight across the river?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How fast should a moving clock travel if it is to bzb2 s7xf4o,r( z o/ olqt;oim:e observed by a stationary observer as running atf:4;,oxzo (mot/z or7qi2 sb l one-half its normal rate?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spaceship takes a nonstop jourjekgjb7-9 d .cney to a planet and returns in 10 hours according to a clock on the spaceship. If the speed of the spaceship is 0.80c, hojgjd-c7bek9 . w much time has elapsed on the Earth?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A set of twins, Andrea and Courtney, are initiallyq:90 cd rgpm8klrgglhg 35)3g.;mf mn 10 years old. While Courtney remains on Earth, Andrea rides on a space ship which travels away from Earth at nm3dl;ggg)rm0fcrk5 :. qphl38 mg9ga speed of 0.6c for five years (as measured by Courtney), then turns around and comes back at 0.6c. When Andrea returns, Courtney is 20 years old. How old is Andrea upon her return?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One 20-year-old twin brother takes a space i)-,bwque: 9ht fz5zftrip with a speed of 0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the age of the Earth-bab 9uef- :hzt,q5i)zwfsed twin brother?

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A meter stick is moving towar ppyhud;:ii69d you with a speed of 0.80c. What is its length?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How fast would a rocket ship have to move to contract to half of its prope6 7f ;3pxibp:x+hyfr er length (as observed by a stationary object)e3pi r6:pf;yxb7h f x+?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The length of a spaceshiw, k +31bb8eakh sdeo1e;idd2p is 10 m when it is at rest. If the spaceship travels by you with a speed of 0.70c, what length1a81be 3sk,wedobkieh;2 d + d does it appear to you?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The closest star to our solar system is Alpha Centauri, .clxm:gw(2 i3gtya1*y ti3npwhich is 4.30 light years away. A spaceship with a constant speed of 0.800c relativp*3.3 gxwiyai 1cygt(2 tm:nle to the Earth travels toward the star. What distance does the space ship travel according to a passenger on the ship?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The closest star to oxmt5rkdio1p*b(4 pt :ur solar system is Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed of 0.800c relative tmo:txrdb54 kt p1p* i(o the Earth travels toward the star. How much time would elapse on a clock on board the spaceship?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The closest star to our solar system is Alpha Centauri, which is 4.30 ligjh-hjv 17sl, vht years away. A spaceship with a constant speed of 0.800c relative to the Earth travej1hsl- v,7h vjls toward the star. How much time would elapse on a clock on the Earth?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron is travel;qvymyvg*( )74 myn*vhip - f) )pbvlting at 0.85c. What is its mass? (The rest mass is $9.11 \times 10^{-31} \; kg$.)

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed ofe dy6zlt u.q21y6mr0 t a proton if its mass is twice its rest mass?

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the velocity of your spaceship goes from 0.3 c to 0.6 p/;eq fi,i ):)gztgd el67va vc, then your mass will i 7ei6agvi,;p v fg)q:dl)zte/ ncrease by

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the momentum iniwqnxdxt (i4so )3xs0:rb )0r $kg \cdot m/s$ of a proton when it is moving with a speed of 0.60c?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  During a reaction, an element l9uyf54( ytxk foses $4.8 \times 10^{-28} \; kg$ of mass. How much energy (in Joules) is released?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  During a reaction, $1.7 \times 10^{-4} \; J$ of energy is released. What change of mass would cause this?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy would be released if 2.0 kg ofva+uql8(i/3d5 h ern vsno 9.q material was lost during a reaction? d8lv+r q9 nesoin./av(h53uq

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The amount of energy equivalenn 7bw v; g 068ate7uva7n-y6ob6mjkqkt to two kilogram of mass at rest is

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The atomic bomb that was dropped on Nagasaki in 1zkm7ew((5g)+h dv gam945 killed 140,000 people, helping to end World War II on the next day. It released energy equivalent to that of 20,000 tons of TNT explosive. How much mass was converted to energy when this took pl7)+g g5e(mwm( hzadkvace? (1000 tons of TNT = $4.3 \times 10^{12} \; J$) Incidentally, modern H-bombs have energy yields 1000 times as much!

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The kinetic energy of a proton is 80% of its total energy. What is the d4paenbum2) g(b: .al speed of thulbg)2(a debn.am4:pe proton?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The kinetic energy of a proton is 80% of its total energy. Whaob n:3*z i-xdkfcjp9/ts t -60+vsdwh t is the momentum 30+t-9t s6 s:fkip- od/b zwn*xv hcdjin $kg \cdot m/s$ of the proton?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What energy is released (in MeV) during a reacti8g6z *94;eiu 7kkqw:rb hinckv s7 q+oon in which $1.67 \times 10^{-25} \; kg$ of material is converted to energy?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much mass is lost durin 5z addc6k)agl-p xj:pxmm36(g a reaction in which $1.7 \times 10^{8} \; MeV$ of energy is released?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total energy of an electron moving with a s:kmt c2+p y)ntpeed of 0.95c?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How many joules of energy are required to accelerate one kilq/bbvl l(,ghqan2 j -:ogram of mass from rest to a velonaj, hv:ql/2bb(-l gqcity of 0.866 c?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a nuclear plant, c(oozz7(zu +rklg)w.y :(bz w$1017 J$ of energy is available from mass conversion. How much mass was lost?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron is accelerated throut4l bo,ag- p0egh 100 kV. By what factor has its mass increased with respect -o4e0pg t,ablto its rest mass?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are in a rocket vyg3q d3rt o7 +4xf(ditraveling away from the Sun at 0.95c. You measure the speedvy or+7g4xfddq( i33 t of light from the Sun to be

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two spaceships are traveling through space at 0.60 c relativeme0g0n plscm+ c8e/7l to the Earth. If the ships are headed directly toward each other, what is their approach velocity, as measu l7ge/s8l+cen 0 0pmmcred by a person on either craft?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A fast spaceship is traveling with a speed of 0.80c. How fast would light t8 lp,if6wn kpxc5z- s7ravel from the headlights of the ship relative to a statio,l c8f pz-5wsk7xpi6nnary observer?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spaceship moves away from t4wf)nutm,3wkv3 5oxye,7nd abqo8. d he Earth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to the spaceship. What is the velocity of the missile measured by obseradvku73wbexo5) 3f,,.nm wy 4dntq 8overs on the Earth if the missile is fired away from the Earth?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spaceship moves away from the Earth with a speed of 0.80c. The spxdpk zwl x 9 s9dzo6(95v+a6fbaceship then fires a missile with a speed of 0.50c relative to9b xdk9+xpz zd w6v6s f9(oa5l the spaceship. What is the velocity of the missile measured by observers on the Earth if the missile is fired toward the Earth?

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