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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 windows, radios, or other means fozg8uh/4znr2web 5aq w pq/7gc9 k*vk ,,hr: rgr you to observe oqk /:,r8hb52zrcwgnk*z7ar 9ve,u /g 4phqwg r measure what is outside. 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 h50ad(dk2 ohumeasure

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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 their experiment thw2y17hpjxhe 7 at

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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 the)mn pi*d3q7ko2ix4 jb 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 p/.uur vv 2l0fgrinciple.
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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 of Galilean-Newtonian relat8imc 91 uv8.v.ig wm:tvu.riqivity.
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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 relativi 5p5g6(tfm:*yjfktrf ty

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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 infxyv-1 ):tsfqk- to03detn) w formulating the special theory of relativity was that to) tfwfd30-xt ):e-synq1vkt he 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.k,3eo lao** hu
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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 speci;*u+wz oop:.d*jf oi sal 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 5cz lvn :hz/o z)10yiniljm -,your pulse rate while in a spaceship moving away from the Sun at a speed close to the speed of light, you would find that it wa 5l-ln)y inz ,ocizzj 0:v/1mhs

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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 ob l.2iv1uwz0mwx a(agd; (hg.r server, a moving 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 dhm:aiwjzrf2d:pch jb 540m ;l4+p3j 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 in a space ship traveling at a very hi)is6ui zxz8hto o07 1dgh speed to a distant star and back again, while the other twin remains on Earth. The twin that remained on Earth predicts thatoz60hiz1s8 )dto xiu7 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 objetjq,psw*4 96hqbz g, ect

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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 direction parallel to its length with a velocity tha33m8x; xuqd ewmm02yz t approaches the velocity of light. The width of this object, asm 32zw 8xx0 e3dm;umqy 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 d2v4a)nipx .du irection parallel to its length with a velocity that approaches the velocity of light. The lengan4 uipdx 2.v)th 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 ligs lcs,vzw1gpc7u;a ym2(* u m6ht, the mass of the particlcyg;a u6,c z7mpms1vuw(2s *l e

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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 spxbt2w ) bbq3h,eed of light, the momentum of the partichq3) bt 2,bxwble

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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 dy(34 rzxg2h872e*i wo rxb e tvl7q*pyou at a very high speed. As it passes, you measure its length at one-half its normal length. From this measurement, you conclude that the moving d4etxh2ixl2q* we7(r 3b*gpoz7 vy 8rspear'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 sh t*+2a8gf-3ye nwz) 3zovnowl5;q kgpeedy proton when its relativistic mass doubwzy5t k v*3nlzhfwgqn e2-8 ;g3)o+ aoles?

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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 izc7xy:fv z(g 8ts relativisticz(:xgz cv7y 8f mass doubles?

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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(rf taf* u::axhrw5 j6 mass $m$ 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 A is f8yi rhk.d,(h moving 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 .8hir k,hd fy(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 frameq*s+xk) bc b6w of 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 increajvc6qpl )rr;a,llb- r (f68 lpses, you 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 speed, relative to thi3plc.ft:r; se shore, does it move in a f ir:;tcs p3.lriver that is 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 ;.qtv,uo 6wbq -o u gsb/n/4nim/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 t/oqonbwi/ su v,;qu6b g4n-.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 still water. With what sp3we(o4o dwdpf/37.lgt e:bsr eed, relative to the shore, does it move sle7dr.w(t3g 4fowo bd:/3 pein 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 be observed by zy3m :hrj/cdq +e,p/ua stationary obu zr+phq c/,jdm:/ye 3server as running at 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 journey to a planet and returns in 10 hou w.dhc+u(t,pars according to a clock on the spaceship. If the speed of the spaceship is 0.80c, hod(uth, a+cwp.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 initially/a 0alf2d 140iicatr 7g af:dz 10 years old. While Courtney remains on Earth, Andrea rides on a space ship which a0if1ad7:fl2cda/4 0zai gr t 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 0.80c foryy o.d,3f)o bnno,yx6 30 yea f .xon d6,)yn3yoyo,brs according to a clock on the spaceship. 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 y8ai2g0al g (h7 1idiuuou 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 pr+qdfhseft 43 6cvh;r7j, up8roper lengtvqfp8cr4u7st;j he d,f +6 3rhh (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 is 10 m when ite+ :rsha/7e(avf*fce is at rest. If the spaceship travels by you with a speed of 0.70c :ce7ha*ff e a+srv/(e, what length 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 solals4m9l p co:tg:;rw -pr 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. What distance does the space ship travel according tlm:-s p4l :rg wo9cp;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 our solar system is Alphahhvyn+q u1s6d;k- ji + Centauri, which is 4.30 light years away. A spaceship with a con;+h1njdykh+uv-qs6 i stant speed of 0.800c relative to 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 isz/ah,sf,7qz7- wdc v b 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the star. How much time would elapse on a clock on the E, z,-bv /hdcw7 f7sazqarth?

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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.u: ro)b8qagkqwt y*lv)b kr+-+62 i mg 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 of a proton if its 21 /wfl akv0oubkqt4: 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 c, then yofhjc:+t gn7g k3z caxu8; z;dji05( vhur mass will incu735gzjfv h(;8zx0 g j:cnait;h+kd crease 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 in( 67p,sh 7ofs2stoj hj $kg \cdot m/s$ 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 elj /2 *qz.v9c omdzv/utement loses $4.8 \times 10^{-28} \; kg$ 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 ofpg,kh 7a8 63kbusgg2yxd1 mh3 material was lost during a reaction?81s362ybu gdh3gam xk7 ,hgpk

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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 equivalentps68ztphn34z 4 u 7d 9pxcd,xp 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 dropa1kumgv.eo8la + p;2f ped on Nagasaki in 1945 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 convee1fgkpm +;ul2.8 vaoarted 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 total energy. What is the speed.cktaan7vf+k o2 u;)c of the proton? c ovk)t a7kuc2+a;n.f

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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. What is the momenb sep(i 9flj/*tum*psjf/(b 9e li in $kg \cdot m/s$ 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 reaction iw/z8 cqys-qr))2m a aln 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 a reacti; tzh99:bro1y/ r fuqyon 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 sw/0wcri d8.m 5c.c 8amzq+x zypeed 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 ng5t4v to9qx9jyfn+) are required to accelerate one kilogram of mass from rest to a velocity on g vtoq9t)94j+fxn5y f 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, f iv ,ag yy2cx8*18tue,fiec5$1017 J$ 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 ma ,qmy2.v c ls b)c5pky.a1qkb5ss increased with qk ),ab2pb5yk5cvq.1y cm . lsrespect 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. You measure thz/6j,q6 tq(xjr wr+ame speed of light from the Sun t( jr,jatz6qwq+6x/rm o 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 tr w.mva /p6 ukh0q(xwi4aveling through space at 0.60 c relative to the Earth. If the ships are headed directly toward each other, what is their approach velocity, as measured by a person uk.0/ 4vm(6 aphxwqw ion 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 0.8il:: qpgl,exjg 0)rr-0c. How fast would light travel from the headlights of the ship relative to a stationary observer giq-:: pr)ljxr0elg,?

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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. Thj j k1h+lp9 .zz5o8sdye spaceship then fires a missile with a speed of 0.50c relative to the spaceship. What is the velocity of the missile measured by obs+h 9.5o8zjylp k1jzsdervers 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 Ehf7mstmt 5 :o06v4teo 9eq.z narth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to vote t67 etznms.9mo04:5 hqfthe 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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