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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 wind,qkssbkyi .45 ows, radios, or other means for you to observe or measure what is outside. You wish to determine4kq,s.5 bkysi 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 was designed to qih/3 2 urn vx1i)x/symeasure

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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 their224l )8no c hwx9c*a oq-brxat3 *cmat 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 yourz s-zucwe6p. urfvbd 5*36(r yself if you use 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 principlea-kf- f/wtup,l 78grun:-a nd.
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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 relativity.jl2g750 l ogds
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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 -ii 2er3 nxv2z-r+aturelativity

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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 postu ahn* --am+t :y4*/tklj scyujlates in formulating the special theory of relativity was that the laws of physics are t s*am- y4 hn-jtytl:k +/jc*uahe 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 postuxw x 7-/vqov9 jb,+nsqg1o 2oalate of 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 postulasymj n/1f- -w5r1er dpte 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 spaceship moving away from thl(g er*v;f5 rzsc4ki ,e Sun at a speed close to the speed of light, you would find sze;rv,4 5l*ficrgk( 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 obserqu45 j s/ye)3rc alxentl8;t6ver, 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 defined u+0ip3m xwj8iefra.0 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 mm6ni/z4i *r(r i:vzhat a very high speed to a distant star and back again, while the other twin remains on Earth. The twin that remained onv 4hrm/ir izn6 mz:(*i 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 obs* :sc yo5 4qyrhin ktp-2dzz).erver, 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 lengnr pv;83o ir+i:a2 vhhth with a velocity that approaches the velocity of light. The width of this object, as measured by a stationary oi h3irpv2+r;av n8oh:bserver,

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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 that appro (i8ibd s8tihaa:anhsxz9bn92 ( xa-9aches the velocity of light. The length of this object, aixbhbh(9a( 9 i2nastax8a8sni :- zd9 s 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 the phx-4 y -o1k/dmog*o lq8bou9warticloxhmqwyg/o9oo ul*8d 1 -4bk-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 momentum of the pcp vq jpi5::nqvg 322.uxxi4iart5 p2vinix3:qcp vgxujq24 i: .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. y;/gs b (uigreao*8(p p9yg7p As it passes, you measure its length at one-half its normal length. From this measurement, you conclude that the moving spear's mass must yp bg7(r /s(8oe9;g ug*ppia ybe

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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 its relativistj iv1 fv.f+d r,l,4oleic mass +f,,f 1 lo .lv4jdievrdoubles?

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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 its rela x(e*9 tg*yk1 reap.jftivistixtp . jrgf*9kyeea1*( c 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 of masxg (grg4 +p1kws $m$ 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 0.50c in a strai*t;i5n lakx u)ght 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 ve ) x;nal*utk5ilocity 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 on spenaf q*)3 z a/v74,xmkn8;md/ivva 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, you wouldg v: ii4e 3k le4;ud8otzi8,fk 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 inuiz2j p jh:*3gu.2knc still water. With what speed, relative to the shore, does it move in a river that is flowing at 2pgj: u3z.*juknhi2c 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 stq*hie,j+a +r+zbt+ sd ill water. With what speed, relative to the shore, does it move in a river that is flowing a* eb+,+jqsrtad++z ih t 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 w kbx qk3wun h9aq3r )+te0x,p.0odek6hat speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boat is heading straigh0qot6upwhe. ar , 9e+bkd3kxx 03kq)nt 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 movi:(q ,e9xreh11 ck lrxgng clock travel if it is to be observed by a stationary observer as running at one-half its normal rate?e1 lghk c91:xrxqre,(

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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.)ytp8dg3 jzl4ag c g( to a planet and returns in 10 hours according to a clock on the spaceship. If the speed of the dgtlap.)8gcgy 3( 4zjspaceship 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 Cix- ei1ecls k-rj*y;s y*l74-f b0kss/0dyk eourtney, 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 -yxrk7 l k* 0yjk e cdi4 -/0i-ls*1sebfsyse;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 takecvjc+ ng.3yas2z h.z4 s a space trip with a speed of 0.80c for 30 years according to a clock on the spayvn4j.h+2 zs.c3cgz aceship. Upon returning 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 p caw92 (7j*r q1ob eo*zklxm+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 to contract to half of its prop /7- ti.xwsc.m+p+bozdr *jruy9vfx1 er length (as o7s -/.+ jb cp.x+ozm9r*w1itvx ry fdubserved 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 1 )e5iz/,rxs r9sfb7 fj0 m when it is at rest. If the spaceship travels by you with a speed of 0.70c, what length 7ex)fsrsbj9 5zrf, /idoes 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 svrw9s bm,s)ohm )n d62olar system is Alpha Centauri, which is 4.30 light years away. As mmb)2svord 9nw6, )h 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 adio(9 u dn28rn,*kcz8rw )nj Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed of nunn id9ra8o (,2 rcdw8)kzj *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 iay)v j7melm* 6s 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the star. How mu m6 l7y*jv)emach 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 0.25yr12u rfqp a ruie+.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 i.zpdb 1uyg .l2mv4h++pxi ej2ts 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, thoke+c:cpn 63iv,rct7 en your mass will incre:c3coiv,t7pc 6e+rkn ase 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 momentumv53hv w yr.,0bju/gr j 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 e.zfi d30ig65qk p2)gwqyg l6ylement 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 durino,n. f24hjznj g a reaction?.n jjnf h,z4o2

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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(ror) -.ldk so 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 140,00l d*r infy b)11imi+r90 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 place? (1000 tdn1ibifil )9+ y *mrr1ons 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 ener+adzsahx2o y 8 ts*f60gy. What is the speed of the proto fd8ha+ay 6x20s stz*on?

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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 energy. What is th/lp udecp8 qot.d b237e momentum l3c eb27tpp d8qou d./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 qwwddn :g va9ya;q0jt6 ); 8bcin 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 reactimjnyse3w 50mfza2g/ a h,.0wvon 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 m:jo,d ocf8 72vl,,ea;qx gdn xn2is9with 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 matp,pi o *iop78nk593l5 bzg ioss from rest to a velocity of 0.8ol*n 85kz3iio, t9ip p ogpb5766 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, l s etgq m/r/tk+,5m)g$1017 J$ 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 :n2hy25p jaj (xe*s bh/p7fsV. By what factor has its mass increased with respect to its n2 *be:7h5v2f psaxjjsyp(/h 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 the Sun at 0.95c. You mh,unpqfw.g g8,n/ n;nxip -j+easure the speed of light frnpgqx iwjh8p,-u n,n.+; g/fnom 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 0.60h,x1 h9)fk2ndpoz -gx c relative to the Earth. If the ships are headed directly toward each other, what is their approach velocity, as measured by a person on either craft?9k-1podnhh x2, gf)xz

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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 /kk5 ab9i fhwqfm+ke)*7eox 2fast would light travel from the headlights of th5+kfkx*am)92q eif/h eb o7w ke 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 of 0.80c. The spacx j j,xc6rng 3s-3woogy2:d8vccza:4 eship then fires a mixc 6-3o j:zgg84y xr,n2wv:jcs ao3cdssile 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 Eahx)tyhcf59 9 rrth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.5h)5 ythc r9x9f0c relative 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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