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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 meaer-n1tn hn::m(q 9nb no :eg7bklnk( 1ns for you to observe or measure what isq o( lngen(- n7b :rk:1b nnhem91k:tn 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 wask)k -n) 0lchr i,.gepw designed 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 thea;t,nrr: 3c-qfsos(on,b l)7uak ( rrir 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 the following comp/rrd;die)y g yy7vjw9 -jl1g9 onents:

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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the relativity ovvu zj.c+o:blr(-) pprinciple.
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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 rls50zbx: bsbf.2 w mil:kj5x*0ozo f 6elativity.
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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 relaic3m*rfjnw4;7mk / 5y c8ov antivity

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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 fm o(y2cda6wa 0g f;ri+, ,cionormulating the special theory of relativity was that the laws of physics are the same in refe (2+fc iogrymw, 0; ncai6a,dorence 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 relativitywx4h ) g.uc(rka*a0x8 ynq,io.
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10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the second postur 88 hwb c1 0a.vo6bhlwrna2w8late of 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 rate while in a spag. p rlfpdvj0)fosa+6+y.ci6 ceship moving away from the Sun at a speed close to the speed of lightvlfj).0gi +p.oa dy+6rs6f cp, 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 cloc2 :e j*kxxttg9k

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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 d8w 8 x 8isktp/4mncs(drn9a: kefined 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 travelkdhlkwv( bwyu bk-;0x i4v -8-ing at a very high speed to a distant star and back again, while the other twin remains on Earth. The twin that remained on Eak-8 bwu ;vw l -vkki(dx0-h4ybrth 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 obsevf n(i1chx/2zrver, 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 direction parallel to its length with a velocity n;r)gqai: ab9w,- ,r6fpt nqqthat approaches the velocity of light. The width of this objecn;a rg,inpa6, rwfq:bt)-qq 9t, 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 direibrjc2 l647vr f eo1/:4n.qsof mha w-ction parallel to its length with a velocity that approaches the velocity of light. The length of m 7eq6ora/ 4 .f w2ns- foihlv:41rbcjthis 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, *6jkxtz j/tu- the mass of the partictzt 6kjuj /x-*le

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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 l zq()tzz, zz n 8w pjydxx-gd/e6-7p0kight, the momentum of the particlewj-gp )z,y/x-zzt0de kn 6dqxz( 8z7 p

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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,z 3xqnft m+ya8n/r po4t)3 c2r you measure its len )3ftnzx/3yo t +qa4rp cm8n2rgth at one-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 kinet6(ii/ed1 r oqujlfe+f o48g8 vic energy of a speedy proton when its relativistic mass doojvglu6f 8+f r4q /i8di(1eeoubles?

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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 t,o6 dtcn)ysff)j 34aspeedy proton when its relativistic ma 46) t,acjdtfoysf)n3ss 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 massmt08a+jvp g9mj:: bjx $m$ 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 0.50cu3i:d mnly0l0aymu z.jd7+r4h +od6h 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 froj +hunlrl +z0id4ym3dy: a. o 0ud6h7mm 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 obser*s;u kv+yfcthg; + mb7i v2ct5ver'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 incy+1lfe;m bg)v dw w5v6reases, 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 whc (b 9pyfu ,4zcd4 e+8oss-vyrat speed, relative to the shore, does it move in a river that is flowing at 1.0 mv48yuz+9 scp4bos(rd e ,-yf c/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 sti4d1;9fyjzy x 5q ;qiccll water. With what speed, relative to the shore, doey5z;y c1 cxifdqq 4j9;s 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 stilf( tsigmw1 9xkc(5zg+l water. With what speed, relative to the shores t+zgc9 (1ki(5mxf gw, does 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 be observed by a stationarh65bj y26hw-4prwn )xj ilxx7y observer as runxn2jxj hlrw i p-6w6)y4 h75bxning 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 hours accorii fcw;2.hl 54z whs6lding to a clock on the spaceship. If the speed of the spaceship is 0.80c, how much time has ela;c.lhfhi25 zwsi6 4lw psed 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 initiall7 p60s0 giv(ls9kkjn ky 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 around and comes back at 0.6c. When Andrea returns, Courtney is 20 years oldl0k0k 9(p6gkss jvin7. 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 brotherlv0jzq(32li +ms7opg takes a space trip 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 a3 mzgvql(s+2 7lo0 jpige 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 towae q0,*hka-7cs0pc isrrd 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 shiu bla4c4smgn;4zy s/4p have to move to contract to half of its proper length (as observed by a stationary /m4ucn44z b;s4lsgya 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 c8ak82 q nm5tjm when it is at rest. If the spaceship travels by you with a speed of 0.70c, what length does it appear to y8a 8j52 tmqcnkou?

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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 sys:4az irh/q.zr tem is Alpha Centauri, which is 4.30 light years away. A spaceship with a 4ra i:z.zqh/r 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 Alpha Centauri, whivx sfwjv0b5+ 2ch is 4.30 light yearsf s0vjbxw+5v2 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 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 4.3sk3lssz g qs6/e5,h hm a03ndw fey;360 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the st /ehfqn l sa6s 0eks3 w,h;ds36zmg35yar. 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 r2 878kzpfh,t apsj 6qat 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 of a proton if its mass is twice ir42 yh:nhmrc-ts 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 fwwfjt*a:wrc 8j5r )43 vhug( e+-fsworom 0.3 c to 0.6 c, then your mass will in+fs5w -8gr )juevt*ja fo3:wh4w(w rccrease 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 momentumryes *).h vozvbevgy/im 983; 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 element 3he :q4db ufi9loses $4.8 \times 10^{-28} \; kg$ 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*9fo4qoda y r) kg of material was lost during a reacti4yd)o 9 afro*qon?

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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 equivalo//f oep: 15ye2hblo hent 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 1945 killed 140,000 people, h+la )pv9*-;)igy)j 7pt f6elsnrfmj celping irf- )fy ap;e9msp glj)*tc6l) +nj 7vto 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 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.ekm11a;li)ao What is the speed of ae;1mo 1a k)lithe 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% 3 6xgiaud6;av *f7ffpof its total energy. What is the momentum inidx36*g av7 f;uaf 6pf $kg \cdot m/s$ 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 reaction4t94q p/ mrvyt 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 lost7,6jz6t1c;0 c qo:u r(tfx htsyxmra; during 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 electrow z)sj-5n+uif(o9ks bn 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 ma .19ikfa 8cmxcj 3lb-oss from resil jc. 91cfm3-baoxk 8t 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, mp3w 32mz9giq $1017 J$ 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 :vy, dj*g*mtg4 7tnt aincreased with res*gg tyv*7 dnmtt4,:japect 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 tra489vo0ml8 mhbf9 i 4e)ouieu;kvf o/ir:ug4s veling away from the Sun at 0.95c. You measure the speed of lig efu48e9b 4k0ou :8h/ o;gi fmr9 lisouvvm4)iht 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 relati 48tpba3 7+tcywdq4e d( lh2aive to the Earth. If the ships are headed directly toward each other, what is their approacht4bpq4d8a327 cdyh +(ie atlw 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. How fast w a5c,psip7hkos d7q7 9ould light travel from the headlightsa577,qs oikc7p9 hsp d 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 2g8g qu2qua3 jEarth 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 observers on the Earth if the missile ju223uagq8g qis 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 d2f(p 92zlpc rEarth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c rel92pfrp (dl2 zcative to 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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