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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 for yo32fogqg9a9 tlu to observe or measure what is outside. You wish to determine if the ship is stopped or moving at constant velocity. Whl3tfg2ao9q 9gat 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 designe6 :p2mn4z0u epjr5kkid 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 concluded from the resultssef5v( +gx gz/ 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 rlv,55ra -e-yi 7qg i3ki up*juse 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 principqmn g 01id44uzq fmcmaf 07(:cle.
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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 23py51y;lm ; f.hwop/j /pxmanby ol7 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 rela16gp6sd ,klxv qh ep44tivity

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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 postb)zn jf6 bqbia yck7d: y vmg-)j(0w*4ulates in formulating the special theory of relativity was that the laws of physics are the same in reference frjnb)yjv )4wb:0mkg-fcqdzb* a(i 6 7y ames 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 relyt6s4+r4w me+p8 + l+qzdf84ka1jvs 4ummv vkativity.
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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 spea(p.,nh uwq/- w -eun wja7,xncial 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 rate while imri 8 2,pm0fhv3qh1u)i9l oe rn a spaceship moving away from the Sun at a speed close to the speed ou0phm,2mvii3fqhl8 r1r e) 9of 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 cll++ kpq.kt(/ +mdg w-vup g7rpock

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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 zkgx-1g go 9k0as $\gamma = 1 / \sqrt{1- (v/c)^2}$, 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 high spya a qgegtrhp54v:+; ;eed to a distant star and back again, while the other twin remains on Earth. The twin that remained on Earth predicts that 5pr;; aa+hg:egyvq4t 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 tzlyg00q r/w- l1jr/jobserver, a moving 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 dirkmdx*b: 1bq.96,g6 bcliwp rhection parallel to its length with a velocity that approaches the velocity of light. The width of this object, as measured by a stationary omp6dq 1 g*96,:bcklwx. bbr hibserver,

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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 a velocity thatvuf06 0 hkvev; approache vevf00;v6kh us 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 parti;.byo vt5,gzodo m8jhxv07n/m47x rl cle approaches the speed of light, the mass of the particle/jo7xobz;.7r xdmo 4g v5v ynt8mh ,l0

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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, 5ad5 su.xtt4x the momentum of the particlutxa t5s5dx.4 e

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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 m k 655vivpku n+9;hyqit passes, you measure its length at one-half its normal length. From this measurement, you conclude 6mki vq5 p+5v;hy9nukthat the moving spear'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 whejyg. 4jba,/jd8 -tgt wn its relativistic mass doubl tgd/b8w .,t- jj4gayjes?

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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 speedyzv6 * l )nja3ru5jj 1r,od9zir proton when its relativistic mass dou jloj *d5,r 3nzirz9v)j16uarbles?

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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 mz6rfo uzd zyt4wm9f o1 7b(+a-p .qy+vass $m$ 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 spaceshiptbbloqx f) 9/gm.nj90jdzy cl80*w c8s, each traveling at 0.50c in a straight line. Ship A is 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 lzft 9 g8nbojcl.d )900yqj*cxb/m w8the 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 r7y; lfmipx+0 the observer's frame 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 increases, yoc9zj9n mvrt)z o 5t ii.97tb+nu 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. Wdpz-bv sl05+ocpl)g9+ yk; +* quhdws ith what speed, relative to the shore, does it move in a river that;0- +p hsl)9ypwk c5zb*++vslo ud qgd 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 m/s in still water. With what spel git+z:2 o.pled, relative to the shore, does it i+ztl:o2 .l gpmove 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 still water. With what speed, relativ9u;ny4l pd-q:zat mi:( :45aftpkkl qe to the shore, does it move in a river that is flowing at 1.0 m/s if the boat is heading straight y::p i;l a9 zk :fpdaqk(tl5qu4nm 4-tacross 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 travee/a*ag fpg4,v fs e7.il if it is to be observed by a stationary observer as running at one-f*/ 4g7g., is epavafehalf 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 104pfpwtfx1 a -wyxwi25*84oer hours according to a clock x4-ryexf4pf1wwp i *wo58 2aton the spaceship. If the speed of the spaceship 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. Whi5y ;/i4qfofblp9r+ ng44dr sy r,d.itle Courtney remains on Earth, Andrea rides on a space ship which travels away from Earth at a speed of 0.6rr+4.gbl nqd4 ;5p/rt id,oy4yif9fsc 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 0.8nqy x:dq2e3 h60c 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-based twin brothe32yhn dxq:6 qer?

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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 you with a spnq1;3e.vmg mlnx hwn5 (; 9uaceed 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 rocke q1kx om6-rpg12xvbu/jp d53 et ship have to move to contract to half of its proper length (as observed1gx udq/13p b5jm x ork62vpe- 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 it is at rest. If the spaceshrysif;qtipg4l2wr9 i46 02 w iip travels by qt2w; ir gis 024wyri9fp46 liyou with a speed of 0.70c, 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 solar system is Alpha Cen yx+d3 z5wwbkcy kyc*0+2 mj(ktauri, which is 4.30 light years a w+2 kjc(x d5yzy+wm3bk ck0*yway. 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 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 Alph q2dinkin9k6 *) h,ixia v0*lfa Centauri, which is 4.30 light years away. i,n6dak0li)x9f ni 2* kiqvh* 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 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 systerg v2n1;l ; tjt)m1ny/r.7 nahy- mxrdm is Alpha Centauri, which is 4.30 light years away. A spaceship with a c1gmhyr -r jxn1v. rt7/anm;)nyl;dt2 onstant speed of 0.800c relative to the Earth travels 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 mass? (The rest mass is b 91mzbe dl4,tw58jco$9.11 \times 10^{-31} \; kg$.)

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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 mass is twice itvk g:z r 3dleh*1/h2wzs 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 your( hbrh),tm7y .hg e8ry mass will increase r )th,myrbyehg7.8h( 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 i,z:a 1o6g itc$kg \cdot m/s$ 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, a,/jr:bf yx h/en element 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 iufckas-6 9r3;z2pf a; qhhb8zf 2.0 kg of material was lost during a reaction6p9 c8;fu;b hsa a-zqhfz 2rk3?

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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 mass (m/v a/-zouu hat 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 194 9 wfqw(ilt7-h5 killed 140,000 people, helping to end World War II on the next day. Itw 9f-hlit7 w(q released energy equivalent to that of 20,000 tons of 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/q9lhyv.k e2e% of its total energy. What is the speed of the proton?k y/h qe9le.2v

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The kinetic energy ol/ 7,.u8 znwnl.si(: xw wffq7 zze2ipf a proton is 80% of its total energy. What is the momentum.l/p x 8l7.w7(nf: ,weqzusfwi 2zz in 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 in whi; qn)(-ussorrb27yy4 eimh -bm*t 6c och $1.67 \times 10^{-25} \; kg$ 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 reaction in which kcxa,tcsi 8s*p1 wgo8c63jqy vi,:;j( 7gxh i$1.7 \times 10^{8} \; MeV$ 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 8gwie,se5pu/x a u*g0electron 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 top +d7e/d0s5ramrfy h5 accelerate one kilogram of mass from rest to a velocity of 0.866 /0d rp+ayf5esm7dr5h 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, kica0uo1k./ s$1017 J$ 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 accelerat k0 mt wa5:lu16i;jqdred through 100 kV. By what factor has its mass increase lw: ;qrmd t0i16jkua5d with respect 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 the6;ai lsl s fc4g9mtjx88n5d,ys*i 1m v Sun at 0.95c. You measure the speed of light1 is8c9 f miyms,ld85t*;jns6xlva g4 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 tt *( v/y ad)j/ludn/irraveling through space at 0.60 c relative to the Earth. If the ships are headed directly toward d/ydv)n t i(r/l*/uj aeach 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 0.809e9ak o,vs 9aia:43f fu1qsgr 1+tgyic. How fast would light travel from thes+sf9,a9y:gui31 okr1ie qa9gva4t f headlights of the ship relative to a stationary 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 the Earth with a speed odj xbxdd6 so*n nq yllt1sj9 at,+fvw- -5w))(f 0.80c. The spaceship then fires a missile with a speed of 0.50*1oxf-dw q)alvn n(9jb , s+wd)y j 6sdttx5l-c 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 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 3dmu6 o+;gn8 )kukiiqa speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to the spaceship. Whati8qk + )dgnu; k6uiom3 is the velocity of the missile measured by observers on the Earth if the missile is fired toward the Earth?

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