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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 meac)migoa2 fqgqg81: erk,(h6 h7t9ib (dlc)zlns for you to ob ig8: ) l9 b71ch(,of)gercda( 2tihq 6gmlqzkserve or 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 experimente7y-:g gi wi2h cph)6c 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 from the results of h 42x):be vm2z bb 5piznsw/m0their 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 d gc.8i - -d-53pxkbf3gi mcfjuse 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 prin;7xjfvm e f7/xciple.
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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 o ,agkneh:rzevr5 5 )u+f 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 re o:4 q6vtzxb;blativity

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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 thfx3lz w-u53(pa /itm zulm/-z eory of relativity was that the laws of physics are the same in referencfuzp3il t5u- x/-ml3( / zmwaze 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 q 7msb r)p+ldzt2 h86bof special relativity.
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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 speciaqt tp,ihr.0k :4yo ry2l 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 bgvd;:1z fhvp /hi7d 8a spaceship moving away from the Sun at a speed close to the spee7fvi8 z/v:ph;h1dgdb d 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 observer, a moving cloi v oaz*m3+zkvx(njb1b.27b mck

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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 dk1* q:x, u.q+fv+nr2e nakt9dw3a; c pbbdg0kefined 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 trzgd y:-bwg 1ny+0gxg 3aveling at a very high speed to a di:g+b ywdnzg- y0g3g1 xstant star and back again, 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, a mo hd,x+mdi6mv8t 5be ,yving 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 lerkbo0 09expaf1 b2db:ngth with a velocity that approaches 9ebf k :p2orb00x1dbathe velocity of 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 lengwi2 0l yukj.)pcjw21a th with a velocity that approaches the velocity of light. The length ofk)1p .l2 wc02w jyjaiu 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 2nt(4(jpt4isp5w k tk approaches the speed of light, the mass of the particlt p4tkni (24w5ktjsp(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 speed of light, the moment ,ap ;-f7u5t x3 4j,5 h wwoethg/c5ethmlnw4vum of the partpf 5wmt /aue4tnw,g54 hxw5t hc7hel3;jvo-, 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 speed. As itqs* sqtd* l*zb/1du5r passes, you measure its length at one-half its normal length. From this measurement, you conclude that the movid tdls1 rszuq*5b/* q*ng 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 when itsth cy4txddj53e +ok 7( relativistic mass5jcd4t(d7oxh 3tey k+ doubles?

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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 xca4eu5n+c8i its relativistic massxni cc+e4au 85 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 mas*k8vi+ mz48abw +op; mlkw0k 0zrcv6ps $m$ 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 travelauar xij x(.,to zr+7 cc4a6z0ing at 0.50c in a straight line. Ship A is moving directly away from the Sun and ship B is approaching the Sun. The scie(47ja x cazr+tuo,r.c0ixza 6 nce officers on each ship measure the velocity of light coming from 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 hxxp+ +*w5wx3m;qb juon 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 spaceshioes t,5vk13hd p 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 whatcrv 9/*ezza38rv:wjy speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boat is :rz8y9/cj a v3evwzr*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 watec t3whpnu,-94 y23c tuqcv0xpr. With what speed, relative to the shore, does it move in a river that isq2 x p4tntvcupu3903wc cy-,h 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 a j7: gsj0+;puv5wsyt, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boagpy+7 t:s;s5wu jv 0jat 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 i . jsejlq14+pk 3j8ycagz)s 0ts to be observed by a stationary obs zejq .cp3ysj1 g40a)sj tl+k8erver 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 nonsto s+b( h k)ubg.hum0)o3g ubn-cp journey to a planet and returns in 10 hours according to a clock on the spaceship. If the speed of the spaceship is 0.80c, how much time ha 3uu0bobhg)b -u+k gsh(c. )mns 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, Andre snu0y0m4 *gj n(sn9ocgr vy7*a and 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 around and comes back at 0.6c. When Andrea returns, Courtney is 20 years old. How old is Andrea upon her return?s*v9sm n*o7 0ng0u ( nr4ycygj

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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 for )zu rt .m)*5wsnhbojb e19cb2 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own awb)er b9. b jhtuc51*oz2 m)nsge 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 towar1hcnhtsu h v .5.(kc4md 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 ship have to move 9eik+zauc 03r ;gvx-sto contract to half of its proper length (as observed by a stationary obe;u9i0zkxs r+a v-cg3ject)?

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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 spaz d. s 2bzqg79y4q (idmarnit ))eyh44w0mx-wceship travels by you with a sp44 hd-my.g 4 xzbsd2) w07y eriz iqat9w(qm)need 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 os 4ot; weg- d*uy vsc4dy01rqft)c07 jur solar 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 accoucc4de1svo)rg7;y*t j wf 4ds q-t00 yrding 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, which is 4.zp8/ is() . rqwvtck1v30 light years away. A spaceship with a constant speed of 0.800c relative 8zc.r1tikqv/s vp) w(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 1h:3c yfap0,hzj0prw solar 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. How much time would elapse ofrpp: 0cj 0zhway 13h,n 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. Wh)ljrw+mz*s g/, u+zhfvgn/6qat 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 ii(c 6/p4q bfaxts 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, tha0l q g,gev q /30mwn4tle:9aem z.d/pen your mass will increase a0.e:wdl mena/,tvmpz94e3 g0 /qlqgby

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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 ;.yn 1bhu 8 .y6te*oi iwskn(din $kg \cdot m/s$ 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 w 0g6jv9rbaste bp72*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 of material was lost dur..6a/mb.f enyhikql ivw8 qal5ua;25ing a reaction?k/qq8i; .uwib l2vm.5l5ha6 fen. yaa

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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 tw( 7h d xqp l.yk-*g3m(whtbw8do 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 Nagfs,g wd1( -cz/tlblx4dpz7u5asaki in 1945 killed 140,000 people, helping to end W 1dzftcwg7 u/p4- l,szdl(xb5orld 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 3d: 3 ypq;qn8 ocyyfve0f n(4eenergy. What is the speed of the q48y(d:o0e;cqf f yv 3pnn3 yeproton?

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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; o*0y y0tqv td9f8ut:g nc:wb a proton is 80% of its total energy. What is the momentum in y:0to0tbu w t:c9ndg*vy8; q f$kg \cdot m/s$ 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 reactiw 5 g5gq8ll2pqon 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 duribis-m z of(q exc s0.clt3:e91ng 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 wito.8j2g5 ms micw,tyu,h 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 mass frouguj7xw6 cd5i t z3u:7m rest to a velocity ofu6z:gcdiu wx5ut j737 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, w 3q2v b1+o22frekdnk $1017 J$ 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 wha) i;z-g0jqteoem8 f0 gw0zs(ft factor has its mass increased with respect to its rest m)oztz8w;gjfsg0 -0meife ( 0qass?

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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(uvlt ,6rby5* 2+52cyrb(pcwzryjyw the Sun at 0.95c. You measure the speed of light from (2+5p rj2c w(crutyyzl *y, r yvb65wbthe 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 t(();4zmk p bd5mrugxlhrough space at 0.60 c relative to the Earth. If the ships are headed directly toward eac (p;r(m u)bmdlk5zx 4gh 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 trqe mwz. l7sp04aveling with a speed of 0.80c. How fast would light travel from the headlighmsq4ze70p lw.ts 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 thecvlhr 9y2*o6l Earth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to 92rhcyl6vl o*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 fsaksusb/mn xn94j.,ts(:- sq-pi rj5q+8gs u rom the Earth 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 is fire4r+q s(k.smugjsx,8-- si5n:j ntsu/s ab 9q pd toward the Earth?

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