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习题练习:Physics Unit26: Special Theory of Relativity  作者: physics

答题人: 匿名未登录  开始时间: 23年05月01日 10:04  切换到: 整卷模式

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1#
 
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  You are riding in a spaceship th,( dlr6sy2j re hss* e0-wsav/at has no windows, radios, or other means for you to observe or measure what is outside. You wish to determine if ths j-hredvas(26wls*e0y, r /se ship is stopped or moving at constant velocity. What should you do? (1.0 分)
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2#
 
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  The Michelson-Morley experiment was d5fo bz5.;08iryc;t dclh/p6l6 wykxq esigned to measure (1.0 分)
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3#
 
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  Michelson and Morley concluded from the results a7m ebp()vrjk)o.xzbi*z ydlh :x638 of their experiment that (1.0 分)
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4#
 
单选题搜藏此题  
  You can build an interferometer yourself if you use the following componentsd j)91kfcqe t0gg kvy9x7,bq1: (1.0 分)
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5#
 
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  State the relativity principl s05 ma/ws/yyppywr 2,e. (1.0 分)
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6#
 
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  State the three unprovable assumptions of Gali 3c5rw. g)ywtilean-Newtonian relativity. (1.0 分)
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7#
 
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  The theory of special r xt9q.d pa73cjelativity (1.0 分)
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8#
 
单选题搜藏此题  
  One of Einstein's postulates uz s:3*5 hyymd y0ti+bs2i;okin formulating the special theory of relativity was that the laws of physics ar5siy y;hzs:0 o yt*bk2 m3ui+de the same in reference frames that (1.0 分)
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9#
 
问答题搜藏此题  
  State the first postulate o4bam4 ik02k votwgu.zz60 a v(f special relativity. (1.0 分)
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10#
 
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  State the second postulate of special re 2 vog6 ut-mgrakrul(r;2;+g flativity. (1.0 分)
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11#
 
单选题搜藏此题  
  If you were to measure your pulse rate while in a spaceship moving adm bmt :mq)-5pl6wv) uway from the Sun at a speed close to the speed of light, you would m dqmvl5))wumt : -6bpfind that it was (1.0 分)
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12#
 
单选题搜藏此题  
  Relative to a stationary observer, b,6irdzdg:7s 6;ghr p a moving clock (1.0 分)
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13#
 
单选题搜藏此题  
  The gamma factor is d-:rs )n-ug7ff vjmlj ;efined as $\gamma = 1 / \sqrt{1- (v/c)^2}$, therefore gamma ($\gamma$) (1.0 分)
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14#
 
单选题搜藏此题  
  Suppose one twin takes a ride in a space ship traveling at a very hi;8 pau9m x7e7oeor1 tzgh 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 twin pe8u9za;xeto m1or77 is (1.0 分)
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15#
 
单选题搜藏此题  
  Relative to a stationary0iuxu gix,0xj(u6e vo+, nk .p observer, a moving object (1.0 分)
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16#
 
单选题搜藏此题  
  An object moves in a directiobl tl7 /4/xfh/ut6eio4ws lhxh0fb.+ n parallel to its length with a velocity that approaches the velocity of light. The width of this object, as measured by a stationary obserxlb7 uhs/ox /e lh406ftl/w h+4ftbi.ver, (1.0 分)
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17#
 
单选题搜藏此题  
  An object moves in a direction parallel to its length with a velocfz 0bjn(3nt4nclflb6,6 1 ooc.-vqr city that approaches the velocity of light. The length of this object, as measured by a st-lnnrfo1bq6c0c,lcvo6. (b nz4tj f3 ationary observer, (1.0 分)
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18#
 
单选题搜藏此题  
  As the speed of a particle approaches the speed of light, the mass of the (8bzlrdc3m ;zo) o9hr particlz9 8(bl3ohdozmr ); rce (1.0 分)
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19#
 
单选题搜藏此题  
  As the speed of a particle approaches the speed of light66 clfe fg6ly/, the momentum of the particleelfy66 g/6c lf (1.0 分)
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20#
 
单选题搜藏此题  
  A spear is thrown by you at a very high speed. As it passes, you measur;rqf9-f.qru/b0 r of h/1qze ge its length at one-half its normal length. From this measurement, you h ;o9gf-f. u/rze /fqbr1rq q0conclude that the moving spear's mass must be (1.0 分)
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21#
 
单选题搜藏此题  
  What happens to the kinetic energy of a speedy proton whgi ;k k-mislypgl53 (om2l:0 nen its relativistic mass dou nl3mki5l0: pgykomlis(g-;2 bles? (1.0 分)
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22#
 
单选题搜藏此题  
  What happens to the totamdagfj. v /d7+l relativistic energy of a speedy proton when its relativistic masd7.g mv+ /ajfds doubles? (1.0 分)
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23#
 
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  Consider a particle of mass pn/e0 n55p qie$m$ and rest mass $m_0$. Which of the following is the correct expression for the kinetic energy of such a particle? (1.0 分)
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24#
 
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  Consider two spaceships, each traveling at 0.50c in a straight liner v);4kwc- yuv. Ship A is moving directly away ;w4k)cry-uvv from the Sun and ship B is approaching the Sun. The science officers on each ship measure the velocity of light coming from the Sun. What do they measure for this velocity? (1.0 分)
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25#
 
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  Which of the following depends on the observer's fra*2egw7 ehxs8ihmq:hdtf)) + a me of reference? (1.0 分)
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26#
 
单选题搜藏此题  
  As the velocity of your spaceship increases11v5 768yfn, tjwnzyy/ kph rw, you would observe (1.0 分)
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27#
 
单选题搜藏此题  
  A boat can travel 4.0 m/s in still water. Witimo3vvw2.uon thg 86la+-dmj(/3adh h what speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s ifho 8d j.d- am/avivulh6 tg(nw+m32o3 the boat is heading upstream? (1.0 分)
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28#
 
单选题搜藏此题  
  A boat can travel 4.0 m/s in still water. With what speed, qy(gl5ipyqc26hmog:4 x(9a h relative to the shore, does it :q4xqyp( o5lha 2h yc9g6mg (imove in a river that is flowing at 1.0 m/s if the boat is heading downstream? (1.0 分)
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29#
 
单选题搜藏此题  
  A boat can travel 4.0 m/s in still water. With what speed, relative to the shor, cvd4k l2pk*he, does it move in a river that is flowing at 1.0 m/s if the boat is headinglkpc*d2k vh,4 straight across the river? (1.0 分)
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30#
 
单选题搜藏此题  
  How fast should a moving clock travel if it is to be observed by a statio,ol 4.6 qblmiznary obserl4 6lo.qzi,bm ver as running at one-half its normal rate? (1.0 分)
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31#
 
单选题搜藏此题  
  A spaceship takes a nonstop journe op.df;exq mr +)o7.kjy 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 has elapsed on the Earth?o)epd;kq r7.m+ox.f j (1.0 分)
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32#
 
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  A set of twins, Andrea and Courtney, are initially 10 years oldcw6c 5 6f 6zu1ghc0tddiyvw/4. 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 g6ycv1wdd c0f 6w6c ui5z /th4back at 0.6c. When Andrea returns, Courtney is 20 years old. How old is Andrea upon her return? (1.0 分)
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33#
 
单选题搜藏此题  
  One 20-year-old twin brother takes a space trip m6 iks(hld).mkgvqzjt(h5s8je. h vwt c96:6 with a speed of 0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age :m5iqzm6evdj klsts ch(h (6vt8)j k.w9.6gh and the age of the Earth-based twin brother? (1.0 分)
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34#
 
单选题搜藏此题  
  A meter stick is moving towaroey 9 f3 k:th d 8oab:2lwx-s.*apz++wkhr .hvd you with a speed of 0.80c. What is its length? (1.0 分)
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35#
 
单选题搜藏此题  
  How fast would a rocket ship have to move to contract to hal+f wj6kiu6 uu3f of its proper length (as fu+wj i366 uukobserved by a stationary object)? (1.0 分)
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36#
 
单选题搜藏此题  
  The length of a spaceship is 10 m when it is ata9yqot(i1 c0vo8q br5czaw 8 . rest. If the spaceship travels by you with a speed of 0.70c, what length does it appe.qo 80zvcacqot5ar1yw9 8(ibar to you? (1.0 分)
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37#
 
单选题搜藏此题  
  The closest star to our solar system is Alpha Centauri, which is 4.30 l rt5 md ggzb;u u00a6o9no1-hvight years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the stab-go vzohnu6;u95 r 0at0m1dgr. What distance does the space ship travel according to a passenger on the ship? (1.0 分)
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38#
 
单选题搜藏此题  
  The closest star to our solar system isq. f f.r.,-jcz9hslte Alpha Centauri, which is 4.30 light years away. A spaceship with a constant-rqlet.f..9z hsfj, c speed of 0.800c relative to the Earth travels toward the star. How much time would elapse on a clock on board the spaceship? (1.0 分)
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39#
 
单选题搜藏此题  
  The closest star to our solar system is Alpha Centauri, which is 4.30 light yearvaxe2 (m:;s4 6dg)yab gyh *cps 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 the Eps2d )ea h6(c:ay4yggv;x b*marth? (1.0 分)
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40#
 
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  An electron is traveling at 0.85c. What is its mass? (The rest mass is 4.og uzas yz xbi9k7,2$9.11 \times 10^{-31} \; kg$.) (1.0 分)
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41#
 
单选题搜藏此题  
  What is the speed of a proton if its mass is twice its rest mass?)d1o/mo2k;maxrrb1 len(+d u (1.0 分)
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42#
 
单选题搜藏此题  
  If the velocity of your spaceship goes from 0kqoy- r-w k7m8(o5vz )vo gu*b.3 c to 0.6 c, then your mass will (vo rm8-buqwzk7o *vg-5y) okincrease by (1.0 分)
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43#
 
单选题搜藏此题  
  What is the momentum in w1 y/gw7dc 0 +ki5rgo)fk0gyd$kg \cdot m/s$ of a proton when it is moving with a speed of 0.60c? (1.0 分)
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44#
 
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  During a reaction, an element loses 08h e3t mh6yug$4.8 \times 10^{-28} \; kg$ of mass. How much energy (in Joules) is released? (1.0 分)
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45#
 
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  During a reaction, $1.7 \times 10^{-4} \; J$ of energy is released. What change of mass would cause this? (1.0 分)
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46#
 
单选题搜藏此题  
  How much energy would be re-s 1x* ,21ak;mxviq ijzk+itgleased if 2.0 kg of material was lost during a reaction?ak;2 z- ixi1s+ivq*1x jm,tkg (1.0 分)
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47#
 
单选题搜藏此题  
  The amount of energy equivalent to two kilogram of mass at u /t2oj+adyo0rest is (1.0 分)
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48#
 
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  The atomic bomb that wtd6b.xnu+.gy as dropped on Nagasaki in 1945 killed 140,000 people, helping to end World War II on the next day. It released energy equivalent to that of 20,000 tons of TNT explosive. nb+6tg.d.uy x 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! (1.0 分)
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49#
 
单选题搜藏此题  
  The kinetic energy of a proton is 80% of its total energy. What is the speedh:,btn*/kd ku of th,u bh ntkk*d:/e proton? (1.0 分)
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50#
 
单选题搜藏此题  
  The kinetic energy of a proton is 80%d,m+ iuz5nj pa pp3y2) of its total energy. What is the momentum n3u+ pzi2pmp,d5)ajy in $kg \cdot m/s$ of the proton? (1.0 分)
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51#
 
单选题搜藏此题  
  What energy is released (in MeV) znz ;eic8ewaf *93b/qduring a reaction in which $1.67 \times 10^{-25} \; kg$ of material is converted to energy? (1.0 分)
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52#
 
单选题搜藏此题  
  How much mass is lost dk*v,9lzjga, puring a reaction in which $1.7 \times 10^{8} \; MeV$ of energy is released? (1.0 分)
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53#
 
单选题搜藏此题  
  What is the total energy of an electron :slali:ro4 3uuei u): moving with a speed of 0.95c? (1.0 分)
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54#
 
单选题搜藏此题  
  How many joules of en,q )h 8.0 w/rwcewqoekq1liv+ ergy are required to accelerate one kilogram of mass from rest to a velocity of 0lw,qi/+v8 0eqrq oc.w 1wekh).866 c? (1.0 分)
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55#
 
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  In a nuclear plant, fr;4xoums- (x$1017$ J of energy is available from mass conversion. How much mass was lost? (1.0 分)
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56#
 
单选题搜藏此题  
  An electron is accelerated throughla97 mr)pyazo)jwm7 / 100 kV. By what factor has its mass increased with respect to its restrao7yz ma97l /j)m w)p mass? (1.0 分)
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57#
 
单选题搜藏此题  
  You are in a rocket traveling away from the Sun at 0.95c. You measmm5*o6rl ou1vure the speed of light from th olmv*urm5o 16e Sun to be (1.0 分)
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58#
 
单选题搜藏此题  
  Two spaceships are traveling through space at 0.60 c relajk-,jr)9j1 eskkxb s2: p xxi8tive to the Earth. If the ships are headed directly toward each other, what is their approach velocity, as measuredbirk)spx1x9: -j 2e k,s8kjxj by a person on either craft? (1.0 分)
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59#
 
单选题搜藏此题  
  A fast spaceship is traveling wi uvkb m0bf84:mth a speed of 0.80c. How fast would light travel from the headlights of the ship rel:mb 4bmuvfk0 8ative to a stationary observer? (1.0 分)
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60#
 
单选题搜藏此题  
  A spaceship moves away from the Earth with aweu/,ta jd*9w 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 th9,t*/ jewd awue missile is fired away from the Earth? (1.0 分)
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61#
 
单选题搜藏此题  
  A spaceship moves away from thea2e,s75ixbj5h kz2 lp Earth with a speed of 0.80c. The spaceship then fires a missile with a speed of k 5e2pl,a5b7h zjxs2i 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? (1.0 分)
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