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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 meansvt ua ey 6(f0a5v1d es-s)5ngv for you to observeaa1s0 5 g- v5vvs6deyft)(enu 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 experiment was designed to measurstr:gf:v 70lke

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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 4a cus6qeo +a hn(;qe1c3mt )m7 fdvr9from 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 the following components: 4l5mvoot0sb;

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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the relativity pnwz0hg jq3l8 atwa, 1/rinciple.
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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 Galilea 8srtp;n7nmg nbl)e *gid5d y3(v*56wlhvcc(n-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 relativik*vr p124zzk dty

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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 theorkc.mr h3cu,2by of relativity was that the laws ofu3 k2m.,r bcch 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 3l, cz4piiwgkjq6*z* 7wm ;pxl47tix 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 special rwgv+b8 pl 26qielativity.
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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 d(8r7qx yky;krate while in a spaceship moving away from the Sun at a speed close to the speed of light, you wouyk7q(r8x ;dk yld 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, 9;akgn1 ge7p3 v.s rsza 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 asog+in ut-i c1) $\gamma = 1 / \sqrt{1- (v/c)^2}$, 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 very high speedz0xa6)n0i-b/ jbtw3s a*xhjr . +a/lvxmu d 7j to a distant star and back again, while the other txa-v/ m b i0 xjbj0aj*7l 3xd.u/)awtz+nh6rswin 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 station1 cucz- ljsuwv0 (s g*;za33qeary observer, 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 paralle6orv86xg/.b; w rr u9zzcs(nk7 lf1ig l to its length with a velocity that approaches the velocity of light. The width of this ob cr z .( r87r1uvnl6ggz9/wo6;is xfbkject, 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 length3;:6m pbn haw89wk vju with a velocity that approaches the velocity of light. The length of t8m3abwu6; kpw n 9j:hvhis 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 lighxfq6-mlai- rc8zwqe2j 13g 4vt, the mass of the particj48w1-mcrx3 qfz -vei al6q2gle

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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 mowa;pd.xq) nrd2n7m +b mentum of the par 7 dnmx;n)2drp+ q.abwticle

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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, you 7:)dnnjrtgq 9h2 km o:measure its length at one-half its normal length. From this measurement, you conclude that the moving sk gr:9n tjomd:7hn q)2pear'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 its relativi :gu:of z0: grgjrjv.0stic mass doublesugj0g: :r:ozg rjv0f.?

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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 spee0p,8rkybsxgxj vti ; )i94v b-dy proton when its relativistic mas i4b x bxkys)vrg0tvi89-jp,;s 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 c qx ub 8wu6yn54g-+ uqcg*(drmass $m$ 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 straight line. pcum+,k ( b n4(djlt9s 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 co4tkn j,lcd(m p+ 9u(bsming 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 o6v6znx2mw z 4ea y3-xen 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 you4881ttdz s+k qnna b2ld4cg a2r spaceship 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,go l axeao3q3jh.i/p3:j:e .rp51elato (g r. 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 heading u .5q.eeo3 a t ilpr/johgo1p gl(x:aa,:rj3e3 pstream?

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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 to thepy: / wk(bz(nc shore, does it move in a river that is flowing at 1.0 m/s if the boat is heading doc/n(p wz y:bk(wnstream?

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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.dny7y f4epteqg(+:* c 0 m/s in still water. With what speed, relative to the shore, does it move in a river that is flot yfy7epn*ecq gd:( 4+wing 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 clo.bt l +v twbs-:2i:axyck travel if it is to be observed by a stationary observer as running at one-half its normal ra:+i. :y-b2t ltvbsxwate?

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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 o:9t 6 2k qy4xriipkeeex1ufd1j ,r:2according to a clock on the spaceship. If the speed of the spaceship is 0.80c, howx9i6edqrk4p2 fyo2: 1rie1 uk ,tx:j e 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 initially 10 year783rnnk-gnx9fa4 a .g b ibf;is 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 Courtbkai;ri f b-78 9nnan. f3x4ggney), then turns around 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 spa1jjvx 4 d2revv94 zp+zce trip with a speed of 0.80c for 30 years according to a clock on the spaceshixz+ z vv124pe94rjdvj p. 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 tosy/*xy 2,evn3tjn g6 iward 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 pb zz1nqnj3(tt :j ptz/wn)2z0mu:km 7roper length)tm/:( z7p :z uzqj2bmj3n ktwz10 nnt (as observed 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 10 m when it is at rest. If the spaceship thdaapgx ht,+;-(((3rcp4u fz vmsj01/ szadh ravels by you with a (+sa3auc0-(t ,dp hdarzsz/ f(mhpg 4j hv;1xspeed 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, whiato:zg.8h yu3ch is 4.30 light years away. A spacet 3y:ou8 azgh.ship 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 owiv l n6*df1t-ur 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 mf- *t6lv 1widnuch 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 A)vzfmguqr;ola0;. : 5wkeu .mlpha Centauri, which is 4.30 light years away. A spaceship wit;l.r 5z0mgu a.w : ;eqmofku)vh a constant speed of 0.800c relative to 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 trave 2,lw5w1s0n ebdjf4 wpling at 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 t0j*euj;c;h8, mz e-x9 ltkbaz wice 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 0j*wt/ udb u3x q3z-v)n.6 c, then your mass will increv3u)zt w/qu-n3*j dxbase 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 momentum in ifn.v9ez2 j 9i6l6c b-ocyboa/t() dr$kg \cdot m/s$ 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 nquy l18 /numyjz.+e9loses $4.8 \times 10^{-28} \; kg$ 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 oe6y,904n tfn7scl mhgf material was lost during a reaction,sm9 yh0ftn7ne l6g4 c?

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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 uyrk ajl*0a1.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 Nagasa7 zb bt6v5obi)ki in 1945 killed 140,000 people, helping to end World War II on the next day. It released energy equivalent to that of 20,006vt5 bz7bi)b o0 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 kq i1xjk l9f 7c95o gq+d.mf(bits total energy. What is the speed of tho xkfqb9c. dmjf (q75+ 9lg1kie 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 pro5h7d4u9emg*2rm nt sq ton is 80% of its total energy. What is the momentum dm4u 79rgtm *25nhqesin $kg \cdot m/s$ 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 21uf lujdw d-0jg 0z4yMeV) during 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 reaction 6 ht givfhou 0(jn3p0;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)f)a 2)o j v 0j6g)pyx 9ilfkgvp;yxm/ 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 eneptxj/ 5n3dc0jse h83wrgy are required to accelerate one kilogram of mass from rest to a velocid/wc 8sp xtjn033 e5hjty 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, , 02znbwgbm8y .q9fppwe;nf 2 $1017 J$ 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 throug d4 f64eicsx1a*z*e3a2 dsp.air0 hl ph 100 kV. By what factor has its mass increased with respect to its rest mai*f p*2rx3h4 d a10sle4pcds6eaa.i zss?

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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 travytpm2j 0nje ae6 be04irl:d /1eling away from the Sun at 0.95c. You measure the speed of light from the Sun2em04: r e p1jlbdj/t0iynae6 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 1+g d)gw370 6 a2tlv*xfle9qyalpiib at 0.60 c relative to the Earth. If the ships 9 w7ipe+q0)3dfgl ab2l lgv6ay1tx* iare 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. How fast would light travg2,;b 7xd2 pae0czlphel from the headligp0z2hl pbg7c;, e2xad hts 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 Earth with8+ v h( v(7ss01 oasl.fbdepe9*cuht b a speed of 0.80c. The spaceship then fires a*vt9sbeshl +. 8dp1h0 b((vuo7f sace 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. n(rjr8x5w:w(b:cb k( n/hqr xThe 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 mkx(wqbrh(:bc(wr n 8x r /:jn5issile is fired toward the Earth?

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