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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 sp5j /a2z2fqzd qaceship that has no windows, radios, or other means for you to observe or measure what is outside. Yoza2z5jfd q2/qu 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 experimennwegd; u5o 8sm:eb) v4t 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 their experiment tha7a b. pvzc6/gdt

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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 componenrh4/c((ek yqtc n1 hcno):b5 qts:

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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the relativity ,) p3lwht5ewdq- s+v yprinciple.
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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 relaac2hjj5t+ )o1y2 hbcdtivity.
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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 relativ fj:r:d-)4pnl rki :bjity

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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 spe6 ms14b(rfgqctc7 e4g cial theory of relativity was that the laws of physics are the same in refere(b4feg s61 t7qcrcg4 mnce 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 specik swql )ailw9**rd; ;jal 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 relq5zo6k,65h jl 3 aiofuativity.
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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 yh 8c+lsgh3+ ddf 77 u;xw8phrnu(h c5moving away from the Sun at a speed close to the speed of lin lc7uusw+ c;7y8h+ rhp8dxgh(d3fh5 ght, 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 clocmjb7(,pesn 7 dk

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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 a0zj)y2r)gu3mht d. yskww5 8ms $\gamma = 1 / \sqrt{1- (v/c)^2}$, 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 sh3 sm -gpsw2t/lip traveling at a very high speed to a distant star and back again, while the othergw 3/stsl2mp- 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 obseuy.q( d5 u 118aszzejcrver, 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 lensddr92( 2xp0eq:r uk1i6neo ygth with a velocity that approaches the velocity of light. The width of this object, as measured by a s0: iu62pr2k qoyded xe(1rn9stationary 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 leng0 tl yjaq9*b*/ myqtpt:a6f)gth with a velocity that approaches the velocity of light. The length of this object, as measured by a s fg:96p/0l*ttqm* y batyqa)jtationary 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 spe-t*s*ctg.u ixl4 ori5 )eb di6ed of light, the mass of the particbt*6)d5ici re -o .lt* xs4giule

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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 apv.cr(5 qoe8qc1 t .aiwproaches the speed of light, the momentum of the particlec r 8at.5(vwecq 1i.oq

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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 b5hsxzw1ka4/1 r: y5qyzf zx3car6z3very high speed. As it passes, you measure its length at one-half its normal length. From/ r a1k b6f55:1zxrsw43y hzzqa3cyzx this measurement, 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 enen(kh 8lh,l gr,k8y1x irgy of a speedy proton when its relativistic mass douk88hrl(g l ,, xnkyi1hbles?

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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 reld,.*v,qgnirmh,pd pw+0( u gjativi v.+d(jiupmq pr* gn,,w hg0d,stic 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 mamiv7y8wltjqf7*g;+ v ss $m$ 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 travelir- d* ei:rka+ (u ;hal)mbnoe3ng at 0.50c in a straight 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 velocity of light coming from thm;aa-3h d( nl bo:ru*r+ee)ike 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 s+/k9v0qhe +vnzxntc./snw, depends on 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, your27g yr7;oge /xk/zmv 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 sqfw3 ;fk6x4xqmwuh+:xhwc o /x;pa 92till water. 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 uacwx9oh+uf f64wxq/ 2qwp xh;:k3 m; xpstream?

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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 towvql147 mg5j q the shore, does it move in a river that is flowing at 1.0 m/s if the boat is heading d4qm 5glw71vjqownstream?

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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. kuhq +:bpl+u,ix,3 :ej ;zxoc0 m/s in still water. With what speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boat ileh k, q:++cbp3, ixo ;:juxuzs 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 ifh pp4qdo, 5j)l it is to be observed by a stationary observer as running at one)lpqohj5,4p d-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 nonstop journey totged,6pyx,f2+uf ar9c9 x 7uo a planet and returns in 10 hours according to a clock on the spaceship. If the speed of the spaceship is 0.80c, how mpeu ffgadr tx9ux,o,7c9+ 62yuch 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 years v5admx:- k) iwda nn7-wm.q7oold. 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 Ankan.d7q7 m5av i)dw-oxmw n-:drea 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 space trip with a speed of 0.80c for 3z5mkh 99usfs 8 thii) yc*b)-y0 years according to a clock on the spaceship. Upon returning to the Earth, what is h sfih9 bhyz*9c)iu5s)-y8 tm kis 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 youlf,cgvs*,/qvsy *k4+ x2jzg suhg8)u 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 itk( kvk6lkyk87s proper lengty67vkk8k klk(h (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 the4 :q;utprgm5sl2z-3 :dydu r e spaceship travels by you;guydl3udz -: srp4:2eq tr 5m with a speed 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 our6h/vigv1y v.; c ad)bu 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 travgha ;.i1)vv6dyucb /vel 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 Alpha Centauri, which is 4.30 light ye;we ;dnd6 :gmkars away. A spaceship with a constant speed ofdn :eg m6d;w;k 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 isb41 z9dh7j iiiw(xo/8/ofj jh Alpha Centauri, which is 4.30 light years away. A spaceship with a constant speed ofjjhoiw9bf 7joi4/i1( zd 8/xh 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 traveling atw*ho 5ih- 6hh(mj *) qtfdt-tt 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 mv7anic(.8txkvi-m fjl fm0yy6y0 x8. ass 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 maf +q4y1lcebi2 r)tn- iss will increin)b2 lic- ef1qr4y+tase 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/s um ()kz9ynh 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 element va sf2 .u;il0,p q/rzjloses $4.8 \times 10^{-28} \; kg$ 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 during a reactilg4gi:z* dq g60uf* rk0li g6 uqggz*:4krfd *on?

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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 kilog:bqe0h+3dm 3 *ro:m usny kr0fram 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 ,,* vjwfspf(to o,r2mv8 bzl *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. H zrm ,f f*jow8s(,tbp2,v v*loow 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 protg6xf.xj5so:a on is 80% of its total energy. What is the speed of the prfj:xg5 6a.xosoton?

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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 802pz12ifb: x .tz bdku4% of its total energy. What is the momentum f bp 2k iz4u21z.xdtb: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 released73:il:jdj gr h (in MeV) 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 durincso 0r8p*;o/pe(3gt upve d lt/9nlu1g 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 energyx)zkvr6ks2r g m+f 5+w of 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 ea jafg -s;i6l6nergy are required to accelerate one kilogram of mass from rest to a velocij 6i;6s- alfagty 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, ./;hp c.xyxsm $1017 J$ 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 2v:nj9e hmi0vr3 8oru100 kV. By what factor has its mass increased with resv0hnm3: vo jurr82i9epect to its 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 0.95 *rwo -z8jh8wu;gs9qh8kcpk5 c. You measure the speed of light from the Sun wkhjw czg8sku5 8 o;98p rh*q-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 0.60 c relat 2 nurd me7 8e9rganb2)umg0,kive to the Earth. If the ships genueg 2ak r2 7rm9ndbm,u)0 8are 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 n+ / 7 lzjim7mac2+lgwa speed of 0.80c. How fast would light travel from the headlights of the ship relative to a s lm nj2+amc+iw/7gzl 7tationary 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 speezv9x t;: h/o/k6lffjjd of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to the spjzjf 6 /l/:;xk9 vtohfaceship. 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 o4tmg .r2dr4 +nsbj7obf 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 obseo +jg4 bsnbt 7r.r24mdrvers on the Earth if the missile is fired toward the Earth?

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