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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 d m algf8(zy7 w6l2e(hhas no windows, radios, or other means for you to observe or measure what is outside. You wish to determine if thal(l26ymh f eg(78 wdze 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 designejuu fn-4b9m )*q 3*zx86r 7fzjzzahfdd 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 results of their exp : ckboy+16 xsbdo63aweriment 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 the following componentb(ck 2v f)g ** 9ti( wlvuhzfurx49gr;s:

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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the relativity igjf4cg- :vrsw)i8 r )principle.
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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 rdn,l5 ,9idv htseb nf16g 5n;a)on2 qmelativity.
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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 ry755l kvywt88(ixtr l elativity

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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 retk9de7 r z; nbrkj,5 nu3uat+wnr9v9(lativity was that the laws of physics are the same in refe;,b nr r7tn9 t9u9kn( kzvrj+ dw35uaerence 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 relativm ezm3) lmpx,)-hthv -ity.
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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 o)+rrg jqs3k iy+;f1mn f special 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 ;, *x koczs2uzm 0)b80grpbnbrate while in a spaceship moving away from the Sun at a speed close to t)rn xb2uc,8 mzg0ob *z0k s;bphe 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 obss.3m cn veicvg24daq16gmj5 + erver, 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 defpbq hvozg+.72ined 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 vei g ee)i xq6u1l2un*,sry high speed to a distant star and back again, while the other twin lx1q* 6i2,nu)iuseegremains 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 mov/ 1 4jk;wi,cbytma9wming 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 directek w,a,:- bpyc: 1acaba b2-yp ;gask,ion parallel to its length with a velocity that approaches the velocity of light. The width of this object, as1 k caeybacpb 2p,ya-wk;-,: gb aa:,s 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 a veqh2zo +3kj)1y w,wrfslocity that approaches the velo)1rwk 2wo yqjfs +3,hzcity 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 mass of thes o586bxsqef0 particl0 fes5x6bqos8 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 appro: 2tfpgcx hmk .+fn8/caches the speed of light, the momentum of the partcmt2gk /.nh:ff+p x8cicle

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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. m3si-vq y7z*k As it passes, you measure its length at one-m*qi73zk- yvs half its normal length. From this measurement, you conclude that 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 kinz4o/,/rpc rq qzu;e; fetic energy of a speedy proton when its relativistic mass d;u;4cz ,rq e/f/zqorpoubles?

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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 2r dph/iv8 g0v-sm s.mrelativistic energy of a speedy proton when its relativistic mass doui/ smvr8 vhms0gd2p.-bles?

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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 maa fvpk* q;vdp9m,7 sj lo0 1lbe;35hysss $m$ 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.dgm :y qkic0xetqzvi97 x7/6 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 the Sun. What do they q7.z9v6t cq kme 7ixd:gyix0/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 refell 08r50l u(xq w(ovt3dhik4k rence?

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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 spaceslj:t ,b k(,mkihip increases, 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 *h j3.xz0gye v ,kpzi;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 headin y*,;vzixpekg3j 0. zhg 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 speed, relative:ufa(p cpn,;x2 r7ls uovl3 x47ujv3d to the shore, does it moufj,7u on v xa7cs3pplv:x34 u2dr(;lve 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, relatl6,j bajfv3aie1 m y3-b66jrtive to the shore, does it move in a ril jf6ae3b m1 tvb,ry-6j3 j6aiver 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 r 4dfb t98 /d-hupm4juit is to be observed by a stationary observer tu bdfm8jh/- r4p9d4u 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 ho;1m0*hqiammav+u g*el ov8ocf ,1q5 vurs according to a clock on the spaceship. If the speed of the+1q ,g15avfmcqvmu*em h;oa *8ov 0 il 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/qgeb26 h72m gt9 atrq Courtney, are initially 10 years old. While Courtney remains on Earth, Andrea 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 arouh6gmqtt9 72e q2/grabnd 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 dtivx z14 / h18q7og :ao(ppogtrip 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-based twin brothea/4:git 1z o1op xvh7gd(8poqr?

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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 speed of 0.80c. What8cwck 7l0ff yq2fr e76 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 -hlaa k6iwxwom xyv43o x0d4ut9,g+ ht8cq9 . half of its proper length (as observed by a stationary object)?awo 64k t3l ivcwyad4qh+x9hx.9gt,u0- ox8 m

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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 whenygf+yfb+:t pg o 8hf0;behg /4 it is at rest. If the spaceship travels by you with a sptg:gbh+/ y;0oef8 ph+ff 4gb yeed 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 Centauri, which is 4.30 light yvtsma :nc:;j/r yyo0(ears away. A spaceship with s(n0 a/cm:ro ; :tyvyja 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 sy8* s mros(x s0dalrih3 l)+qh(stem is Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travxis0)q(l h8h( rsr*amdos+l3els 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 Cen5bslf e (l (j11wkqvdj)1nkl8 tauri, which is 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the w) l n1bql(k1j vfsj1ekl(58dEarth 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 masiun +avg.)5ns s? (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 mass is twice its ay/r3di kpsrd0 m8u192l lts/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 7s fwgbhm50al;ht67/5 ultet mass will incrs a t l wbf7hth505g7tl;em6u/ease 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 momentummhj/8kg )d/-hh z1ym q in $kg \cdot m/s$ 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 efm;,b h:+-l8t nkekkx lement 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.r;og/aq8ib5;m vi q/z 0 kg of material was lost during a reactib5/8 oi/; qzrimqva;gon?

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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 k1 vrywv .sy)jm f;xfafpt7.06r;/ktp ilogram 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 7)ioy)4u c uuanz5t(w1945 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 z47ayu iot)un)cu5w( 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 protoxc -epljb06ym .b* ivg6cm 6 (.xig5mhn is 80% of its total energy. What is the speed of the pl(c.hm06ypm6x e-g b* jg xv 6bm5i.icroton?

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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 enerf u.d k6wwre69+my/ 3 g ;+rfepog;bpxy4aa 6fgy. What is the momentum in m p/6k;4.ya r u; dagepr +xwbffo3geyw+66 f9$kg \cdot m/s$ 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) dufy saiyjmb8(t22)+n a9tle u8 ring 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 a reactis 4npp8e s(rx;on 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 ener7 3haup4dpb(w(5ih (k u7l.y bidmea 6gy of an electron 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 acceleq*n6 bczkie8 -rate one kilogram of mass from rest to a veloci8 qb e6-ikcnz*ty 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, 5x,trn b6r+n * l47lmk.0b)tccmrn xu$1017 J$ 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 p/u voks3;a5ig d r5f)has its mass increased with rk ri35gv)sf ao5d;pu/ espect 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 traz ap;*ph 1af/p wyg3z ,va+mpv0yf 70yveling away from the Sun at 0.95c. You measure the speed of lig;ppap7ap wy gf1yavzz,f m0* vh y3+/0ht 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 relative toetvxnx+ 9s v, 1(.nqps the Earth. If ( nx9vqvnx+t.sp1,es the 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 tok eq4zl8,5o. How fast would light travel from the headlights of the ship relative to a stationary observerotq o5elz8 k,4?

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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 fre09z*xw e4 lggk2. rm)s 4hvctom the Earth with a speed of 0.80c. The spaceship then f.g9 v 404*lg )m kwhtzexs2recires 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 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 spaceship ekg-+;f6h-8f 4wjx wwaaae +jthen fires a missile with a speed of 0.50c relative to the spaceship. What is the velocity of the missile measurw j46;8 w+efhx+aw --jkeagfaed by observers on the Earth if the missile is fired toward the Earth?

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