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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 othec;xx/r+cbp 9qs/mgcw ho,a0 5r means for you to observe or measure what is outside. You wish to determine if the ship is stopped or moving at constant veloc 59rwo/ g,/c;0xbapq x+cmsh city. 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 z;d,t m.hjss )ee +q)qj+ 76lkxpvsf, was 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 fqk9 hf8tjx nl+c)+ve5rom the results 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 use thfy:knf p l*e+i(9g m1ay1vct7e 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 .qe 5l.;4ex/dh6beu,d15jkxjc o baeprinciple.
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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 assumpg;+ms t b265byyng4:/gyc-wq 9acgqjtions 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 relativitge-zj.wt*;td y

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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 specivy hfn3 0y8x, piev8q9n7:cfial theory of relativity was that the laws ovn7, iefnx p9h8f0yi: v yq8c3f 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 relativi n+6 vkwkg4ioo ;0,zxaty.
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10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the second postulin.;04myscga eh* ;gsate 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 spam1h4dkgz:wsxi6x/c4 7-zz z aceship moving away from the Sun at a speed close to the speed of light, you would ix7adz 1-/:zw64gz zkhxm4cs 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 observe 9u+y- 6njenfor, 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 9rj+e b;if8jmi1jm1 ;s to brq)euw)/defined 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 travui4 2.p)xpor rilli;+eling at a very high speed to a distant star and back ag;+. 2 xlpio uprri)4ilain, while the other 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 1, )d7qjhvt).v fkeld, 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 vew0dv,g +jp2 w 9gazrzc coa,f.a:4fu :locity that approaches the velocity owpjac4,wz0g,.:2 +zar9a:c f v fog udf 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 length with 6r am82t0uf60e/b5i fzjouta a velocity that approaches the velocity of light. The length of this object, as mej8t/0uu6f2taezmiaor 6 f 05b asured 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 appryb3nbn3 d lg)c*gi 2m. 0wvwn6oaches the speed of light, the mass of the particlcnw6n)dvyg 32.g lwb 0*in mb3e

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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, thegw2sf2 v8hw; p momentum of the partvp s8hwg2f2;w icle

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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 zqb co37wx* +q7d+cif mni/n9speed. As it passes, you measure its length at one-half its normal length. From this mfq zqnicm * xwo+n37c7+bi/9deasurement, 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 kinetic energgy 8)hqva5/i06;7ldsd. sm3ks/n s-l oefmrvy of a speedy proton when its relativistic mass doubles?8 3ls oka)m/s5 ghedsv vf70im/6;nlqs d.yr-

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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 protogt(l, 1-osc9j(cbh5yk 8nejan when its relativt-hk (e8lj5,1cy9g sabn o c(jistic 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 or an,d7r(z2-bfjk lz b(-(hkuf 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 traveokns:ll ,;dd ,ling 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,s o,k:l;dl nd 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 depenh1. ff*d7sgg ads on 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 gw,w;.u9c oisb8gnw 2) bibq)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 in still water. With whatu1r0n,ye) rhl speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boat is heading upstream?,lh) ruer0y n1

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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 wv:; ejv;8mqh gqic.cx v:9o:q ater. With what speed, relative to the shorec m;q: 8:gqijv9:cv veqoxh. ;, 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 still watepv*zuy j 3c*x +:5,uc vuch*urr. With what speed, relative to the shore, does it move in a river c*zyx:5 +,jcuu urv *phu 3v*cthat 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 clocsp4/mwc0x8 mifo a6y8hfq)(qk travel if it is to be observed by a stationary observer as running at o ms6/i mhqpwfq0y)oa8 (xf84cne-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 toszt wjdd lq2)x*pwm,(o2t-zb (r5of 9 a planet and returns in 10 hours according to a clock on the spaceship. If the speed of the sp2qd,zdojt-t)(w(xm z2*9 bpr5wsfl oaceship 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 l+lzm3o v fh8t8m+b,)6acvi ginitially 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.la)6, o3+8+g bzmivlhm8cfvt6c. 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 wixa759+/u3l;,icrzzqn jk iw8mlw .sx th a speed of 0.80c for 30 years according to a clock on the spaceship. Upon returl x 9;j w+z a,xk.w/5nui3m 8rqsz7iclning 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 you wit sklmn*qf ;xt5vf6g7 -h 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 t z9i6oi5 /hnaeo move to contract to half of its proper length (as observed by a 6i9o 5ezi/ahnstationary 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 spaceship travels w)z1qebs1u 8xmi9p b/ by you with amp/b biuw11e9q8z) xs 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 Centauri, whic9*)a qqagowj ts++0m ah is 4.30 light years away. A spaceship with a constant speed o0w9qjta+ goa*qm)a +sf 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 syi8w i-apkfpv5)i4.jc v1 0gaolar system is Alpha Centauri, which is 4.30 light yearpi 0ycpw1 aj-ig.vf v k58ai4)s 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, w e/z9z)otdq+ ujqw(,ghz r3(ihich is 4.30 light years away. A spaceship with a constant speed of 0.800c relative t( u)/jtz9 qz ewg,izodh+ (r3qo 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 mc6-rjaa0i ab u;r/)c7hew yd2 ass? (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 prxy(e 2lgxoq w jh:1:s/oton if its 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 c2):t 5suvzd+(t ur3 7 yz4rpj;fdrlqy to 0.6 c, then your mass will increase by ufjp3ddv;z ts y) +7r(5y4tulr:rq 2z

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the momentumlrqg+qhl;b /x p,ab3/ 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 los2mujyg ,r d4ndl8 3knjdrr44pw3 7 ;ypes $4.8 \times 10^{-28} \; kg$ 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 of material was lost,pjv(;qrsm n* during a reaction?*rjm;s p, (nqv

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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 agy ek3esau:*h7btci,28 dv.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, helzrk: w; k4fut/nbo9 j4ping 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 :4jk4kt fr/9nu; wozbwhen 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 eneru v,gs3 ()vzaegy. What is the speed of the prgz,(vs3ev) a uoton?

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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 u 36xc.*gefjy 80% of its total energy. What is the momentum in .c g uexjf6y*3$kg \cdot m/s$ 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 re4u;2 hvwvff1b, z, qwiaction 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 dupbjp2 zvsv4cph48 mcev+;) 8u ring 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 electron moving wit 9wn3f5ru ea/a1x3 l. .ce-f mo(puvjqh 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 acc yk 6k3i5j;/q(yvhrjc elerate one kilogram of mass from rest to a velocity of 0.86ji jhyyv(/rkq; 653kc6 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, i8n j96njf pg($1017 J$ 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 10o x7-o-6zsdn j4rf 0rf0 kV. By what factor has its mass increased with respect to its rest massxn0 z s4of76-of-rdrj?

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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 t1axxiqf:jlm. 3;z .ev/*fqr(5o tbdrraveling away from the Sun at 0.95c. You measure the speed of x fjrq5.ld(aq rxm1 *:;.e/bvtofi3 zlight 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 mf fu0dhqeegh :, ud3a:c6+n u32u gbbd (.ni8relative to the Earth. If the ships are headed directly toward each a8hf0c:ub d 3eh,nuqn. +6gei (b:fu3ddgum2 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. How fast would light m0;0teo e3ie htravel from the headlights of the ship relative to a statio e00em;oe tih3nary 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 of 0.80c. The spaceen.2g)d,fmy eship then fires a missile with a speed of 0.50c relative to the spaceship. What isdme,ngy2f)e . 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 speel-er,vjad 0+ wd 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 e,v -l0d+ jrawmeasured by observers on the Earth if the missile is fired toward the Earth?

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