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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 spaceship that has no wl xiz8iie/3b.2 ux, bgindows, radios, or other means for you to observe or measure what is outs x ubx/2l,g.ie3zi8biide. You wish to determine if the ship is stopped or 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 designed to mex(gujaox2,f-wqgu0 4cz9,b p asure

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Michelson and Morley concluded from the results of theiz5q:f/c fpink;x 1d; ar 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 interferj8ei2o84valgm x*a 6fometer yourself if you use the 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 pri10 jd-20 8m bmblgorxnnciple.
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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 assumptionv;nd-9x nyz o4s 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 special re 7up5gos9 x,:3oa1um gqkxov/ lativity

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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 relativity wasgmaz17nxwsp57 4tw 9c that the laws of physics pmsctxgw 7 az w9471n5are 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 rela+hwijmcbyto t62z(r;,/3a7 4ahl 5b fxkn p.jtivity.
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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 specialikjckpc+x2h /m4 + ,sck haq8jt9d2 0c relativity.
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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 ,5q t1y syw2w :9kokvnrate while in a spaceship moving away from the Sun at a speed close tnq2ko9y ysww1: ,k5v to the speed of light, 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 moving cyjpmsm;mwv h1;*xp hi2 6 cj67lock

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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 definegqf7zc0/ft y,d as $\gamma = 1 / \sqrt{1- (v/c)^2}$, 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/ld 6ot4zk +ae in a space ship traveling at a very high speed to a distant star and back again, while the o6do+eka/l 4tzther 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 movinl5 t (c4oa+ tu1*beixog object

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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 directi k;jdya*nqdu.rbw8 009 ld9ipon parallel to its length with a velocity that approach du;k0l w*qbddjirap09.y n9 8es the velocity of light. 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 gvz lg53 p/0hy+q pq2glength with a velocity that approac g g0gvqzp2+p/y53hq lhes the velocity 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 partixpp dz n4e63c;cle approaches the speed of light, the mass of the particl3;encz 6d4px pe

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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 particlciuzz ,9el5l2n 31ofn; i 7l/tjr8hay e approaches the speed of light, the momentum of the particl e5uzl3;z8yfh /ailnrtcl 1jo ,27i 9ne

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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 wvi 50hyo81apg 97yavit passes, you measure its length at one-half its normal length. From this measurement, you conclude that the moving hog1y57p0avayi 8w v9spear's mass must 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 of a speedy proton when its relativisti7 jp 3*n78ql/pplyju8(ay;xd2lch y v c mass dou8;y/c dal(7ly2l3pjn q7 p*jvupyhx8 bles?

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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 relativistic energy of a speedy proton when its relatxco6gj v2a+8 hivistic mass doubles6v8hcoa+ xg j2?

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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 mass mw3p,iuiaq7:$m$ 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 a straight line. Ship h+jcf*-n6 z:o+v jxkm A is moving directly away from the Sun and ship B is approaching the Sun. The sciencek fv-+m*oz:h+j6xnjc 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 218 tzpsppo t1of reference?

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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 po+y g p87zgv,would observe

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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 4.0 m/s in still water. With what speedx;-c (dsjjcx7 , relative to the shore, does it move in a river that i;sc(x 7jd-xcj s flowing at 1.0 m/s if the boat is heading upstream?

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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 wfr woj+ nvvdh253+1/ tbx zx-uater. With what speed, relative to the shore 3b+ru5jd2+ f- o n1xth/xzvwv, does it move in a river that is flowing at 1.0 m/s if the boat is heading 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 sdc6fs j:8aa 9vtill water. With what speed, relative to the shore, does itjv c9f 8ad:s6a 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 trai0oawkq k* +8*fj,bsivel if it is to be observed by a stationary observer as running at one-half its norm,* aijs0+ib8 qwf *kkoal 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 journey to a planes 8+;zxjqb ltx7; suo0t and returns in 10 hours according to a clock on the spaceship. If the speed of the spaceshi0x7;b lt os+; qsujzx8p is 0.80c, how 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 initially 10 years old. While Coqy e9y2 chm1v69yny w4urtney remains on Earth, A cyhw 4e9 192nmqyvy6yndrea rides on a space ship which travels away from Earth at a 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 trip with a speed of 0.803bjm,pnws(;b8 q9s mg *h)4ud myvx4 tc for 30 years according to a clock on the spmgh)9( y*vbwm;4,n3m duq4s s 8p tjbxaceship. Upon returning to the Earth, what is his own age and the age of the Earth-based 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 toward youdcq:s2 1 ygz +5ez9xzwpc9ni 2 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 to2y qirtm6 5q2c move to contract to half of its proper lengthtry c6mq2i2 q5 (as observed by a stationary object)?

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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 spaceship of6kh a: 8hw5mis 10 m when it is at rest. If the spaceship travels by you with a speed of 0.70c, what lenwh of86: 5mhkagth 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 systd3krw7t5xtnc h 9 83hnkr v4t;em is Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the star. What distance does the space ship travel according to a passenger on h ;4 wv r3t5x3n8k t7hr9ctkdnthe 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 on nk2bv1:j83 2kl vjwfur solar system is Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the star. Hklk8w 3bn12j:vjfnv 2ow 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 izch5xy5lhssp+)1 8f 86mjs vd s Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth l) c6yj+ 5xzpv8s1hms8fd h5 stravels 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 traveling at 0.85c. What is its mas3xk.m) xcth fd7lm/(7r5 fmwws? (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 of a proton if its mgix65 o4eht6x/t8 oqkass 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 cfigb82vq3 g/lc:s7x k0wn/ d/w9zvx m, then your mass will increase bm ng/bqvlx8x7 gs9/widzk2cv3w0: /f y

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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 yazcuzxu66 2qjx:zn:lh*n2 6in $kg \cdot m/s$ 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 loses 94i gwq n5 ,7-dj1ifl,w xukgw$4.8 \times 10^{-28} \; kg$ 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 of8p *38*xm1 wnedd1mc 4 ngks(rifvq;i material was lost during a reactid e314mf;cisx*8gq8r v( wi1dmn n*kpon?

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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 equivalent to two kilogram of m9a)dau kinspawe7 k0 nown7 9e(1 2tq*ass 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 1945zqsad1ryy, xil z3-. + killed 140,000 people, helping to end World War II on the next day. It released energy equivalent to that of 20,000 tons oi1xlq.yz+-a rzd,s y3 f TNT explosive. How much mass was converted to energy when this took place? (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 .pavsggwfz g,ru 6o:s9a ix:65**g nptotal energy. What is the speed of gwgpipgzu sv *gr:a,6o :5 xfa6n.s*9the 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. W ;(sff+eqll+ lhat is the momentum in lleq+fs ;l(+f$kg \cdot m/s$ 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 release9)hg8az d1qtdd (in MeV) during a reaction 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 during 7x ;bqeww*k,(eqdzx +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 elecl:yp)qej0r)5ec cm u2bk 0e,dtron moving with a speed 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 kilogram of mass from 6g:t5ja2kvvk/ hyy+ mrestmh 6yg/vtva:5kjyk +2 to a velocity 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, b(o2ei (+hzzm$1017 J$ 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 through 100 kV. By what factor has its mass increasex(s ca+jov.4gda og).9zl4 ukd with resl .g4do sx c4a. )vak+9ogzj(upect to 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 traveling away from the Sun at 0.95c. Youjtljdws42hd /9 rh .r. measure the speed of light hrj l dhds.294rj. /wtfrom 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 rwdyj.s hi4 o(ec)eq* 6elative to the Earth. If t. ej ec* qw)d4s6hi(yohe ships are headed directly toward each other, what is their approach velocity, as measured 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. H t j+q;i(x2i50( ld lcma/fmrnku(l f)ow fast would light travel from the headlights of the ship relative to a stationary obsmkf cun a( dl)i(i rt ljlf2mx0q(5+;/erver?

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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 the Earth with a speed of 0.80c. The;k* s22l7wlu5 bz kowj spaceship then fires a missile with a speed of 0.50c relative to the spaceship. What is the velocity of the missile measured by observers on the Earth if the missile is fired away from the Earz 5k jlo2; ws*luw72kbth?

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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 spaci qsaqg (9q,/1;-chti-mddpeeship then fires a missile with a speed of 0.50c relative to the spaceship. What is the velocity of the missile measured by observers on thegs- 1 q i aie(-,mhcdqq;9tp/d Earth if the missile is fired toward the Earth?

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