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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: 游客未登录  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, ors-b,qy5slh ze:t8j;0zt2z fyt ag/u0 other means for you to observe or measure what is outside. You wish to determine if the ship is stopped or moving at constant velocity. What shoule,8h5faz 0 j0:tg/z2yttsbys-; uzq l d 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 designew1+* twg 7 x umlbd8if75ruwgr-mki*(d 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 conclc*s4kp9xfd3 tbe oc vg 7 u5)6ciy5n7muded from 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 the5cc2:gcx.hdu v6j 2x hhu)8za 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 ppdp :utvfu8zl3/z8 b6rinciple.
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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 relativitj1(c 9j2mblgp;odnz 0y.
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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 l8/b u04my mfwrelativity

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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 post9l1zpj3 1sf 3dzt4n vgulates in formulating the special theory of relativity was that the laws of physics are the same in referzjn1fzp1l 39 gd3t sv4ence 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 postu),skm 4/w dtijlate 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 postulate of special relw ia p,q5xdcb)1mk.;h ev ,nd9ativity.
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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 nofyb 231 ca0; hxp ds-d+tkq:your pulse rate while in a spaceship moving away from the Sun at ;axdo hpy ksq1bd0-2:tc nf+3 a speed close to the speed 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,a5 bc/8 (9s, u 8puczeksa9b5o5vutpm 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 as9c,2kr tloh0v $\gamma = 1 / \sqrt{1- (v/c)^2}$, 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 pe oqb2:np*tbn jk87 j1l od0o/h8;c htraveling at a very high speed to a distant star and back again, while the other twin remains on Earth. The twin that remained on Earth predicts that the astronaut t/nb8*p 2 ; :o oj7cekbqt0odh8hln 1pjwin 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 movin:cym m8zg a/)wg 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 lenpm;si 94+fegx gth with a velocity that approa4xe9+sifgp;m ches the 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 length with bz* 5+ku+wyxz a velocity that approaches the velocity of light. The length of this object, as measured by a stationary oyb+ 5xwzzk u+*bserver,

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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 ofpu tw37 hg:x/ j/nwf:t light, the mass of the partict/g hjp w/xtu3w:n 7f: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 / s6.19hzzin9dswxy zvu4va0 approaches the speed of light, the momentum of the partixz0w9z9znd 1.avs 6iys4u hv /cle

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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 measure oh( ,ny;ixuj0its length at one-half its normal length. From this mehi ,yno;j( x0uasurement, 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 ener7iurh (7 cdy (c.rkc wff unbc(,,(uf)gy of a speedy proton when its relativistic mass d,)hbnurcc7.du 7 c u((ryffik,w((cfoubles?

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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 /6 tlxubr0:)z+joqm crelativistic energy of a speedy proton when its relativistic majo6 +0buz)rq: m/ xlctss 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 o o0; 8s fuswmj74 pboh0;pp1pkf 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 trb2bujt ;2mmi5 mff4o0aveling at 0.50c in a straight line. Ship A is moving directly away from the Sun and ship B is approachio0224ji 5;mubmb fftmng the Sun. The science 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 on the observer's frame of reference?f9s-po .0xj s5kgt*yy

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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 spacer7-a5qol9,bvg e gn7zship 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 what speed c dcef- /sa/4dws16)i6rpu0vt8rjhno * n7rv , relative to the shore, does it move in a river that is flowing )74adjhcos*60t/6pds1n -rvr v w e8 niur/cfat 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 still water. l(voe 1 mg clgk))8d/h zdan-+ With what speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if thdg(knovze/a+ )- cld 8)l1hmge 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 wdimrng0rh d.gpz b9 0q+j8 zu+65am5sater. With what speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boj.m00 g8 p5g 9anrzd uzhi5bd6q+smr+ at 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 stati)urngjwejua:v3dy,0/ p3g5 jonary observer as running at one-half its n j 0w,vuad/ng35 juye3prg:)jormal 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 jou epx4,) 9qx:jijhul4brney 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 mu4lxjq9e)4j b:hu pi ,xch 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 Courvqmlavqpj7 a,bm 1n0. ( i8l0ttney, 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,q80 1v bj(n t. ml7qlam0paiv 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 with a speed of 0.80c forqp : hwivt6/z(mbd 8tyj8k a,; 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the j ;vwtb( : y8hi/t a6q8p,mdkzage 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 with a speed of 0.80c. What isyvr(5) +ibeo w 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 rocketf8 0 (0am+ yketj;jbdx ship have to move to contract to half of its proper length (as observed by a stationary fba(8d k+0 ety0 ;xjmjobject)?

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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 2hzba0qp6u;.s ejj/p m when it is at rest. If the spaceship travels by you with a speed of 0.7p 6pab2e/quhjj sz .0;0c, 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, which is 4.30 light ye*3 1.0h;pne2 eff0oxkgzygio5s in0gars 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 according to a passenger0eg ixef 0zg;2i fn .31o0gk5hos*pny 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 4krotnem 6w5md (r v.6).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 on a clock on boardw5r.ned6to mrvk)(6 m 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 s +9hznj4wum8yepn. x 1ywi0x 3olar 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 towar nyj +34w19uw.0xm pehy inzx8d 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 wx o)tm) .;t+mlxsn tfx-74sh. 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 i hm;e v-h8eo*;wes:nb+ fxn *of 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 c to 0.6 c, then your) 1,);glsta kfsd(kdf mass will increase ;ddg,sk )a1 fl)(fkstby

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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 ik7yy1 m ,wvduw*u8(vwc-l6x $kg \cdot m/s$ 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 loses/3z/ bzr6+d * d(5fbqyidkn ji $4.8 \times 10^{-28} \; kg$ 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 woulz,0rt/iv vt f /k(ww4,f+dkh,6 zrbi bd be released if 2.0 kg of material was lost during a reactionk ,, 6wvr+zbfr(4ztkdihbvf0i tw/, /?

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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 kilogram of mas3 *kxl*gh f/n sd6n8oes 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 140,00(oit1b: mfuzi;pt9 2d dip lg7 u*q-q50 people, helping to end World War II on the next day. It released energy equivalent to that of 20,000 tons ofuo( i ddiqb2fz;q-m5:t igtl ppu79 *1 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. What is tgmgqsb:,q +s+zor8i 7 he speed of s b:8 rqgim+z7+sogq,the 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% of its total energy. What is thet-1jm:5a2pua d2ut u6hm-wn 4m,mcaf momentum inna4 2t c,:5jt 1 aap2m hf-muw6dm-uum $kg \cdot m/s$ 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 reac1wetxt/5rv r,l9-imf,sthd; tion 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 reactiond)sqf( y 9*mo4ndxl h/ 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 with a sp*vx9 2e8qgvayeed 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 e r*/(t:am wmbare required to accelerate one kilogram of mass from resmwm:(/ *at ebrt 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, rw(gy po 8 po;izty3,6$1017 J$ 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 masr w +-vipf-i5os increased with respect to itsiv 5rfpw-+i- o 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 measure the 2 g*vp 3k-un.+xamyijbm 7+sgjyz6 6 xspeed of light from the Sun to bej-vgx7 +z+n3ubkjys*pay x 6.2 g6mim

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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 th01 - vubduj/9f*b(kpyzmkhx9rough space at 0.60 c relative to the Earth. If the(9 my -dk10/v xukzuh b*b9pfj ships are 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 wc*mlkf g.4n1 tv8:d9uf*lwt f;b ge t-z50kro ith a speed of 0.80c. How fast would light travel from the :t*t*.o m ;dgcufr-5bzv 98 gltkf1 nf40wlekheadlights 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 with a speed of 0.80c. Tb,u3fzait t5 -he spaceship then fires a missile with a speed of 0.50c relative to the spaceship. What is the velocity of the missile measured by observe t3 5,b-uatifzrs 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 rw2h6q5b s ms((7glwzwith a speed of 0.80c. The spaceship then fires a miss (q7mb5zsw r(swlg 26hile 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 toward the Earth?

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