题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习:The Special Theory of Relativity



 作者: 王信东Wood发布日期: 2025-07-15 10:29   总分: 94分  得分: _____________

答题人: 匿名未登录  开始时间: 07月15日 10:29  切换到: 整卷模式

标记此题
1#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are in a windowless car in an exceptionally smooth train moving6xycbqp f jgf;+)4so/u7 c c:g at constant velocity. Is there any physical experiment you can do i7yq;g s)o pcb/x ug+c64jffc:n the train car to determine whether you are moving? Explain. 

参考答案:     查看本题详细解析

标记此题
2#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
You might have had the experience of being at a red light when, out of theecmn v h()vl o:n5,6ow9,wlw l)guwm8 corner of your eye, you see the car beside you creep forward. Instinctively you stomp on the brake pedal, thinking that you are rolling backward. What does this say about absolute and relv 89w ()wg6lhow ,m5n,eln)ol:v wcmuative motion?
参考答案:    

标记此题
3#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A worker stands on top ofa 2i-q 89gtw b/uxnpm. a moving railroad car, and throws a heavy ball straight up (from his point of view). Ignorimpug9q n 2b-/wxt8.aing air resistance, will the ball land on the car or behind it?
参考答案:    

标记此题
4#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Does the Earth really go around the Sun? Or is it also valiry5+hr5bwdni+x5o 4y d to say that the Sun goes around the Earth? Discuss in view of the first obrr5 h4 i+n+d w5xy5yprinciple of relativity (that there is no best reference frame). Explain.
参考答案:    

标记此题
5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
If you were on a spaceship traveling at 0.5c away 0 acrr+om6jv0 from a star, at what speed would the starlight pass you?+00 armj6rvco
参考答案:    

标记此题
6#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
The time dilation effect is sometimes expressed aylh b04 ;3pw. (wa9f0 f2 ewhm3njeobos “moving clocks run slowly.” Actually, this effect has nothing to do with motion o;ohfen.fwe309bb4a03 h pw2ylj m(w affecting the functioning of clocks. What then does it deal with?
参考答案:    

标记此题
7#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Does time dilation mean thatjyi x ez1*94re time actually passes more slowly in moving reference frames or that it only seems to pa *9ejyrzx1i4e ss more slowly?
参考答案:    

标记此题
8#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A young-looking woman astronaut has just arrived home from (ber6n- lo( tha6 s kc;(6rboaa long trip. She rushes up to an old gray-haired man and in the ensuing conv os; -cbkan l(h66(aertrb(6oersation refers to him as her son. How might this be possible?
参考答案:    

标记此题
9#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
If you were traveling away from Earth at speed 0.5qw5 u/jxkh i 6mcoprtl5a )gzzx 7;*kg1f-2 7mc, would you notice a change in your heartbeat? Would your mass, height, or waistline change? What would observers on Earth usic2z omh6f;mj lq 1ki/aw p-)77k xrggu*5ztx5 ng telescopes say about you?
参考答案:    

标记此题
10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Do time dilation and length contraction occur at ordinary speeds,h0m/-g8kbl4suhr gsa (d d(-e say $90 \, \text{km/h}$?
参考答案:    

标记此题
11#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Suppose the speed of light were infinite. What would happen to the twfran(/0da5a fzl3m64yk7u relativistic predictions ofnuat a0675zfmd 3 ykw(l/ra4f length contraction and time dilation?
参考答案:    

标记此题
12#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Discuss how our everyday lives would be different if the speed of l.,/r-i*t89vfeni y re,i-uya +it jrkight were onli,e8 iaikv/-it yj,.et rrufr y-9+*ny $25 \, \text{m/s}$.
参考答案:    

标记此题
13#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Explain how the length contraction and time dilation formulas mighpwk8 b5fd ,ys,t be used to indicate that cbwdfp5 s8yk ,, is the limiting speed in the universe.
参考答案:    

标记此题
14#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
The drawing at the start of this Chapter sh e1eaj(ouizz + .3oht0ows the street as seen by Mr Tompkins, az0uji3te +eoh( 1z.o for whom the speed of light is $c=20 \, \text{mi/h}$. What does Mr Tompkins look like to the people standing on the street? Explain.
参考答案:    

标记此题
15#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron is limited to travel*;xqxw/ esj.d at speeds less than c. Does this put an upper limit on the momentum of an sejdw /.*x;x qelectron? If so, what is this upper limit? If not, explain. 

参考答案:     查看本题详细解析

标记此题
16#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Can a particle of nonzero m ,f4 pbyk.w6kc cs6+i/g vasa+*f: dvrest mass attain the speed of light? 

参考答案:     查看本题详细解析

标记此题
17#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Does the equation $E=mc^2$ conflict with the conservation of energy principle? Explain. 

参考答案:     查看本题详细解析

标记此题
18#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If mass is a form of ene.h-;r y25of( xcrnx zergy, does this mean that a spring has more mass when com2c e.-nrz(yh forxx5; pressed than when relaxed? 

参考答案:     查看本题详细解析

标记此题
19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
It is not correct to say/p8an vp7ctshuh *0-s that "matter can neither be created nor destroyed." What must we say in/8 hst0snu* cv7pp-a hstead?
参考答案:    

标记此题
20#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is our intuitive notion that vebyw6(+*zp4*+ fq. ar ,bm eslkhaa,chlocities simply add, as we did in Section 3–8, completely+ m z(.*qrha+spa,al 4wcfhye *,kb 6b wrong? 

参考答案:     查看本题详细解析

标记此题
21#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spaceship passes you at a speed of 0.750c. You measure its length to be 2xh 9nz o- pbgkrlsn65c);n;vtq*k o028.2 mq9*hc6oo2nnl )0t;-;g rkpzsx bn v5k. How long would it be when at rest? $L_0$ =    m

参考答案:     查看本题详细解析

标记此题
22#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A certain type of elementaryv97d-*x4m; 4 cy d-aaxf5lnsot6q ibu particle travels at a speed of $2.70 \times 10^8 \, \text{m/s}$. At this speed, the average lifetime is measured to be $4.76 \times 10^{-6} \, \text{s}$. What is the particle's lifetime at rest?
$\Delta t$ =    $ \times 10^{-6} \, \text{s}$

参考答案:     查看本题详细解析

标记此题
23#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Lengths and time inte 08o2h szzjt wi4jekngq4+.c;rvals depend on the factor $\beta = \frac{1}{\sqrt{1 - v^2/c^2}}$ according to the theory of relativity. Evaluate this factor $\beta$ for speeds of:
(a) $v = 20000 \, \text{m/s}$ (typical speed of a satellite); $\beta =$  
(b) $v=0.10c \;\; \beta =$  
(c) $v=0.20c \;\; \beta =$  
(d) $v=0.95c \;\; \beta =$  
(e) $v=0.98c \;\; \beta =$  
(f) $v=0.999c \;\; \beta =$  

参考答案:     查看本题详细解析

标记此题
24#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you were to travel to addsjhr-w: -; b star 125 light-years from Earth at a speed of $2.50 \times 10^8 \, \text{m/s}$, what would you measure this distance to be? L =    ly

参考答案:     查看本题详细解析

标记此题
25#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of a pion if its average lifetime is mexb e8+da9l )cs mfs6b 47aqnd3asured to be $4.10 \times 10^{-8} \, \text{s}$? At rest, its average lifetime is $2.60 \times 10^{-8} \, \text{s}$. v =    c

参考答案:     查看本题详细解析

标记此题
26#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In an Earth reference frame, a star is 82 lightt(xo y ddrm(*bkwl-:;-years away. How fast would you have t;-do*k my(bw:tx drl(o travel so that to you the distance would be only 35 light-years? v =    c

参考答案:     查看本题详细解析

标记此题
27#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose you decide to travel to a star 85 lightu/6 /ahbf84iyh+i es y-years away at a speed that tells you the disi68ef/sby hy/ +uaih 4tance is only 25 light-years. How many years would it take you to make the trip? t =    y

参考答案:     查看本题详细解析

标记此题
28#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what speed $v$ will the length of a 1.00-m stick look 10.0% shorter (90.0 cm)? v =    c

参考答案:     查看本题详细解析

标记此题
29#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Escape velocity from ty h;n (;hkfrn.tj;;pq he Earth is $11.2 \times 10^3 \, \text{m/s}$. What would be the percent decrease in length of a 95.2-m-long spacecraft traveling at that speed? L =    $ \times 10^{-8}\%$

参考答案:     查看本题详细解析

标记此题
30#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what speed $v$ do the relativistic formulas for (a) length and (b) time intervals differ from classical values by 1.00%? (This is a reasonable way to estimate when to do relativistic calculations rather than classical.) v =    c

参考答案:     查看本题详细解析

标记此题
31#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose a news report stated that starship Enterprise had just ssx omfzy;1 5.2ai1gwreturned from a 5-year vom51 .y2wsz s;1ifxgo ayage while traveling at 0.84c.
(a) If the report meant 5.0 years of Earth time, how much time elapsed on the ship? $\Delta t_0$ =    yr
(b) If the report meant 5.0 years of ship time, how much time passed on Earth? $\Delta t$ =    yr

参考答案:     查看本题详细解析

标记此题
32#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A certain star is 10.6 p)-wkj4ld5 pmlight-years away. How long would it take a spacecraft traveling 0.960c toml )jpkd45p-w reach that star from Earth, as measured by observers:
(a) on Earth, $t_{earth}$ =    yr
(b) on the spacecraft? $\bigtriangleup t_0$ =    yr
(c) What is the distance traveled according to observers on the spacecraft? L =    ly
(d) What will the spacecraft occupants compute their speed to be from the results of (b) and (c)? v =    c

参考答案:     查看本题详细解析

标记此题
33#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A friend speeds by you t ;s8sz2 vp,,ig/cgfb*izrw 6 in her "Ferrari" spacecraft at a speed of 0.660c. It is measured in your frame to be 4.rzpfi g/;gw6 *,s,cvb 2iz8st80 m long and 1.25 m high.
(a) What will be its length and height at rest?
$L_0$ =    m
the rest height is    m
(b) How many seconds would you say elapsed on your friend's watch when 20.0 s passed on yours? $\bigtriangleup t_0$ =    s
(c) How fast did you appear to be traveling according to your friend?    c
(d) How many seconds would she say elapsed on your watch when she saw 20.0 s pass on hers?   s

参考答案:     查看本题详细解析

标记此题
34#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How fast must an average pion be moving to travel 15 ms,tkxbgzmr.(k j8;b e:2 w. pcm j6w+c before it decays? The average lifetime, at;+tk .c8rwcb j,b mj:sg.xzek6m( 2 wp rest, is $2.6 \times 10^{-8} \, \text{s}$. v =    c

参考答案:     查看本题详细解析

标记此题
35#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the momentum of a proton trdsh6zomowts pvk-*n i:(p( (.aveling at $v =0.85c$? p =    $ \times 10^{-19} \, \text{kg·m/s}$

参考答案:     查看本题详细解析

标记此题
36#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what speed will an object’s relati0 bd h yu,/89dfbv swy940 invuo0 :+w-xeffpqvistic mass be twice its rest mass? v =    c

参考答案:     查看本题详细解析

标记此题
37#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A particle of rest masmkzakz9qr1a+m7x6 9 ks $m_0$ travels at a speed $v =0.20c$. At what speed will its momentum be doubled? v =    c

参考答案:     查看本题详细解析

标记此题
38#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  (a) A particle travehhjgt +r:e54bq8-/cxbn 8yz y ls at $v =0.10c$. By what percentage will a calculation of its momentum be wrong if you use the classical formula?    %
(b) Repeat for $v=0.90c$.    %

参考答案:     查看本题详细解析

标记此题
39#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the percent change in momentum of a proton that accelegn( vhzfyb37lw13/xey:nu9 v rates
(a) from 0.45c to 0.90c,    %
(b) from 0.90c to 0.98c?   %

参考答案:     查看本题详细解析

标记此题
40#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A certain chemical react56 n-8emp nb 4c/qp1ls kttm0lion requires $4.82 \times 10^4 \, \text{J}$ of energy input for it to go. What is the increase in mass of the products over the reactants?$\bigtriangleup m$ =    $ \times 10^{-13} \, \text{kg}$

参考答案:     查看本题详细解析

标记此题
41#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When a uranium nucleus at rest brts7 n63b8m w.gl*a93brbb wckeaks apart in the process known as fission in a nuclear reactor, the resulting fragments have a t*9cbn7bg.m3swwka68r tb3 blotal kinetic energy of about 200 MeV. How much mass was lost in the process? $\bigtriangleup m$ =    $ \times 10^{-28} \, \text{kg}$

参考答案:     查看本题详细解析

标记此题
42#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Calculate the rest energy of an el2 ;yszm. 9qa4fm*xlh oectron in joules and in $\text{MeV}$ ($1 \, \text{MeV} =1.60 \times 10^{-13} \, \text{J}$).E =    $ \times 10^{-14} \, \text{J} = 0.511 \, \text{MeV}$

参考答案:     查看本题详细解析

标记此题
43#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Calculate the rest mass of a proton opm vf4t 8 ns76 waenbmh,1 p)4dd9dr:in $\text{MeV}/c^2$. $m_0$ =    Mev/$c^2$

参考答案:     查看本题详细解析

标记此题
44#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The total annual energy consumption in the United Stayx:txj+*wdey a4 63xxtes is about $10^{19} \, \text{J}$. How much mass would have to be converted to energy to fuel this need?    kg

参考答案:     查看本题详细解析

标记此题
45#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy can be obtainedsb 61r)vhzpm13df;2r ax olk( from conversion of 1.0 gram of mass?    $ \times 10^{13} \, \text{J}$How much mass could this energy raise to a height of 0.25 km above the Earth's surface?   $ \times 10^7 \, \text{kg}$

参考答案:     查看本题详细解析

标记此题
46#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of a particle when its kinetic energy equals ilt hzk+b*7es z. u).8fos, tngts rest energy? v,s78.g*nhz+o) t.stbfkl e zu =    c

参考答案:     查看本题详细解析

标记此题
47#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what speed will an object's kinetic energy be 25% of its rest energy? v h;k.2dbk t8lji pa nn +16ie.m=    c

参考答案:     查看本题详细解析

标记此题
48#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  (a) How much work is required to accelerate a proton from rest up bc+lu hzj2+6ayu+cvm h/ v 8u1to a speed of 0.99v2c+lm+ +1 y8uhj cub/6vazuh7c? W =    GeV
(b) What would be the momentum of this proton?p =    $ \times 10^{-18} \, \text{kg·m/s}$

参考答案:     查看本题详细解析

标记此题
49#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Calculate the kinetic energy and momentum of a fkly*-z:ek +qv + rlj2proton traveling $2.60 \times 10^8 \, \text{m/s}$.
KE =    $ \times 10^{-10} \, \text{J}$
p =    $ \times 10^{-18} \, \text{kg·m/s}$

参考答案:     查看本题详细解析

标记此题
50#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the momentum of a 750-MeV proton (that is, its kinetic energy is 75wzre14 1ufyp w b jm5-6fb.5nu0 MeV)? .zfj51wr1fb eyb u6um5-pnw 4   $\times 10^{-19} \, \text{kg·m/s}$

参考答案:     查看本题详细解析

标记此题
51#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of a proto)q f2f(0w:3os nur uqwn accelerated by a potential difference of 105 MV? v ()2nfuq fr 3qows0w :u=    c

参考答案:     查看本题详细解析

标记此题
52#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of an electron whose kinetic enuwszod;+r3 1vergy is 1.00 MeV? v =    c

参考答案:     查看本题详细解析

标记此题
53#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of an electron just before itb hpqo/-h5 uo n7o)/:-xt eysh hits a television screen after being accelerated from rest by b)uo/-soe :h -/7qp5xythoh n the 25,000 V of the picture tube? v =    c

参考答案:     查看本题详细解析

标记此题
54#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Two identical particles(jx2yx w -h(6n4zsh yk of rest mass $m_0$ approach each other at equal and opposite speeds $v$. The collision is completely inelastic and results in a single particle at rest. What is the rest mass of the new particle? How much energy was lost in the collision? How much kinetic energy is lost in this collision?
参考答案:    

标记此题
55#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Calculate the speed of a prog3x d o6nwvatj(g007yn0it-xton ($m_0 =1.67 \times 10^{-27} \, \text{kg}$) whose kinetic energy is exactly half
(a) its total energy, v =    c
(b) its rest energy.v =    c

参考答案:     查看本题详细解析

标记此题
56#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed and the momentum of an eleutv6/4 zvqzm- ctron ($m=9.11 \times 10^{-31} \, \text{kg}$) whose kinetic energy equals its rest energy?
v =    c
p =    $ \times 10^{-22} \, \text{kg·m/s}$

参考答案:     查看本题详细解析

标记此题
57#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose a spacecraft of mass 27,0 x8 wq:z b*hg18ww3ihq00 kg is accelerated to 0.21c.
(a) How much kinetic energy would it have? KE =    $ \times 10^{19} \, \text{J}$

(b) If you used the classical formula for kinetic energy, by what percentage would you be in error?    %

参考答案:     查看本题详细解析

标记此题
58#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Calculate the kinetic energy ando w1o) qv/5gr 1vs/yvl+e+rolb s8 x;v momentum of a proton ($m_0 =1.67 \times 10^{-27} \, \text{kg}$) traveling $7.35 \times 10^7 \, \text{m/s}$. By what percentages would your calculations have been in error if you had used classical formulas?
KE =    $ \text{MeV} \, $ with an error of    %
p =    $ \times 10^{-19} \, \text{kg·m/s}$ with an error of    %

参考答案:     查看本题详细解析

标记此题
59#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The americium nucleus, mrh ;:jw-z3 51ddjb nm$^{241}\text{Am}$, decays to a neptunium nucleus, $^{237}\text{Np}$, by emitting an alpha particle of mass 4.00260 u and kinetic energy 5.5 MeV. Estimate the mass of the neptunium nucleus, ignoring its recoil, given that the americium mass is 241.05682 u. $m_{Np}$ =    u

参考答案:     查看本题详细解析

标记此题
60#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron ($m_0 =9.11 \times 10^{-31} \, \text{kg}$) is accelerated from rest to speed $v$ by a conservative force. In this process, its potential energy decreases by $6.60 \times 10^{-14} \, \text{J}$. Determine the electron's speed $v$. v =    c

参考答案:     查看本题详细解析

标记此题
61#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Make a graph of the kinetic energy versus momeni wp *l4ebh6.2lzd.zetum for (a) a particle of nonzero rest mass,l2ezi.blhzwe*p .d 64 and (b) a particle with zero rest mass.
参考答案:    

标记此题
62#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What magnetic field inqlm5v0nn8a zoht 4.3a tensity is needed to keep 998-GeV protons revolving in a circle of radius 1.0 km (at, say, the Ferm3amtn 40onqa8v.h5zl ilab synchrotron)? Use the relativistic mass. The proton's rest mass is $0.938 \, \text{GeV}/c^2$ ($1 \, \text{GeV} =10^9 \, \text{eV}$). [Hint: in relativity, it is still true that $\frac{mv^2}{r}=qvB$ in a magnetic field.] B =    T

参考答案:     查看本题详细解析

标记此题
63#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A person on a rocket trag i0r3ec t 7dsv9j*h5eveling at 0.50c (with respect to the Earth) observes a meteor come from behind and pass her t950reh vicgd e 73js*at a speed she measures as 0.50c. How fast is the meteor moving with respect to the Earth? u =    c

参考答案:     查看本题详细解析

标记此题
64#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two spaceships leave Earth in opposite directions, each with avc9wf8dy:o3 l speed of 0.50c with respect :93wvlo cfd8yto Earth.
(a) What is the velocity of spaceship 1 relative to spaceship 2? u =    c
(b) What is the velocity of spaceship 2 relative to spaceship 1?u =    c

参考答案:     查看本题详细解析

标记此题
65#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spaceship leaves Earth traveling at 0.71c. A secoz ,(xqm9cb39 c v(agotnd spaceship leaves the first at a speeotc v9 q(9m,(cgzxab3 d of 0.87c with respect to the first. Calculate the speed of the second ship with respect to Earth if it is fired
(a) in the same direction the first spaceship is already moving, u =    c
(b) directly backward toward Earth.u =    c

参考答案:     查看本题详细解析

标记此题
66#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An observer on Earth sees an alien vessel appbtqd-6 by 5n1froach at a speed of 0.60c. The Enterprise comes to the rescue (Fig. Below), overtaking the aliens while moving ddfqb ny tb56-1irectly toward Earth at a speed of 0.90c relative to Earth. What is the relative speed of one vessel as seen by the other? u =    c


参考答案:     查看本题详细解析

标记此题
67#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spaceship in distress sends out two escaj c4x- mr-kuv1pe pods in opposite directions. One travels at a speed-4r v-k c1umjx $v_1 =-0.60c$ in one direction, and the other travels at a speed $v_2 =+0.70c$ in the other direction, as observed from the spaceship. What speed does the first escape pod measure for the second escape pod? u =    c

参考答案:     查看本题详细解析

标记此题
68#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Rocket A passes Earth at a speed of 0.75c. At ,ikv vxcwonn7jcn*e 82,;a zl(ymg34 the same time, rocket B passes Earth moving 0.95c relative to Earth in the same dir(j872w e,cli ak4,y goc*vxv;m n3nzn ection. How fast is B moving relative to A when it passes A? u' =    c

参考答案:     查看本题详细解析

标记此题
69#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The nearest star to Earth is Proxima Centauri, 4.3 light-years tfy p)p7a u gql*86/jvaway.
(a) At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 4.0 years, as measured by travelers on the spacecraft?    c
(b) How long does the trip take according to Earth observers?$t_{Earth}$ =    yr

参考答案:     查看本题详细解析

标记此题
70#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As a rule of thumb, anything traveling faster than about 0.1c is called)-sfhtg qx.( d;5cltz relativistic - i.e., for which the correction using special relativity is xfztc(5;h .g-dl)qt s a significant effect. Determine the speed of an electron in a hydrogen atom ($v \approx 2.2 \times 10^6 \, \text{m/s}$) and state if it is relativistic. (Treat the electron as though it were in a circular orbit around the proton.) 

参考答案:     查看本题详细解析

标记此题
71#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  (a) What is the spee o.haw7l-dzx0d $v$ of an electron whose kinetic energy is 14,000 times its rest energy? You can state the difference $c - v$. Such speeds are reached in the Stanford Linear Accelerator, SLAC.    m/s less than c
(b) If the electrons travel in the lab through a tube 3.0 km long (as at SLAC), how long is this tube in the electrons' reference frame? [Hint: use the binomial expansion.]L =    cm

参考答案:     查看本题详细解析

标记此题
72#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How many grams of matter would have to be totally destroyed to run a 10m fl)zvu qh.c.4b5mb: k5xns6 0-W lightbulb 5bmnfsl.5k cz64 ubh:.) m vxqfor 1 year? $m_0$ =    $ \times 10^{-8} \, \text{kg}$

参考答案:     查看本题详细解析

标记此题
73#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What minimum amount of electromagnetic eneima 9dukzg,p 0).lbo0ju 9a.c rgy is needed to produce an electron and a positron together? Ap bc)ud0mz.,9.u g akj9olai0 positron is a particle with the same rest mass as an electron, but has the opposite charge. (Note that electric charge is conserved in this process.) E =    MeV

参考答案:     查看本题详细解析

标记此题
74#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron ($m=9.11 \times 10^{-31} \, \text{kg}$) enters a uniform magnetic field $B=1.8 \, \text{T}$, and moves perpendicular to the field lines with a speed $v=2.5 \times 10^7 \, \text{m/s}$. What is the radius of curvature of its path? r =    mm

参考答案:     查看本题详细解析

标记此题
75#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A negative muon traveling at 33% the speed of light collides head on with a posivk*m4yx+2 3sl6uu0mvfkrd9 ev / rgb (tive muon traveling at 50% the speed of light.(*rvl4vmvr6kybk2s0 3/ x9ue f+ugmd The two muons (each of rest mass $m_\mu = 105.7 \, \text{MeV}/c^2$) annihilate, and produce how much electromagnetic energy?E =    MeV

参考答案:     查看本题详细解析

标记此题
76#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A free neutron can decay into atf fi-05k -ofc proton, an electron, and a neutrino. Assume the neutrino's rest mass is zero, and the other masses can be found in the Table inside the front cover. Determine the total kinetic energy shared among the thre f--k fcoti0f5e particles when a neutron decays at rest. KE =    MeV

参考答案:     查看本题详细解析

标记此题
77#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Sun radiates energy 8 + ;w9mka62uhsnhgfaat a rate of about $4 \times 10^{26} \, \text{W}$.
(a) At what rate is the Sun's mass decreasing?$\frac{\Delta m}{\Delta t}$ =    $ \times 10^9 \, \text{kg/s}$
(b) How long does it take for the Sun to lose a mass equal to that of Earth?$\Delta t$ =    $ \times 10^{15} \, \text{s}$
(c) Estimate how long the Sun could last if it radiated constantly at this rate.$\Delta t$ =    $ \times 10^9 \, \text{yr}$

参考答案:     查看本题详细解析

标记此题
78#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown particle is measured to have a negativev dy8qfq(wans(.g ; c6 charge and a speed of $2.24 \times 10^8 \, \text{m/s}$. Its momentum is determined to be $1.07 \times 10^{-22} \, \text{kg·m/s}$. Identify the particle by finding its rest mass.
 

参考答案:     查看本题详细解析

标记此题
79#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy would be required*89:ou fje 97uc kjvis to break a helium nucleus into its constituents, two protons and two neutrons? The rest masses of a proton (including an electron), a neutron, and helium are, respectively, 1.00783 u, 1.00867 u, and 4.00260c uukjjs:9efv 8*9o i7 u. (This energy difference is called the total binding energy of the $^4\text{He}$ nucleus.) KE =    MeV

参考答案:     查看本题详细解析

标记此题
80#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the percentage increase in the (relativistic) mass of a car tr)af;bc,-jdz+gv+g nji 7b q.j aveling 110 km/h as compared to at rest? [Hint: usajfjng,ib +v.); zcd-7q bg+je the binomial expansion.]$\frac{\left(m-m_0\right)}{m_0}$ =    $\times 10^{-11}\%$

参考答案:     查看本题详细解析

标记此题
81#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two protons, each having a speed of 0.935c in the e8luiee(j3 i.laboratory, are moving toward each other. Determinuiee3 . le(8ije
(a) the momentum of each proton in the laboratory, u =    $ \times 10^{-18} \, \text{kg·m/s}$
(b) the total momentum of the two protons in the laboratory,   
(c) the momentum of one proton as seen by the other proton.p =    $ \times 10^{-18} \, \text{kg·m/s}$

参考答案:     查看本题详细解析

标记此题
82#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Show analytically that a particle with y:k/32 s(ubxeu*eg bdmomentum $p$ and energy $E$ has a speed given by $v = \frac{pc^2}{E}$.
参考答案:    

标记此题
83#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The fictional starship Enterprise obtai mu /i-+an92 ceiz+0zprmb z2cns its power by combining matter and antimatter, achieving complete conversion of mass into energy. If the ier2p2uz0m+b9i z c/c - +namzmass of the Enterprise is approximately $5 \times 10^9 \, \text{kg}$, how much mass must be converted into kinetic energy to accelerate it from rest to one-tenth the speed of light?    $\times 10^7 \, \text{kg}$

参考答案:     查看本题详细解析

标记此题
84#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron is accelerated sok vo()kem /z0ydy /;eh that its kinetic energy is greater than its rest mass yd/0e)ye(v km ; /kzho$m_0c^2$ by a factor of
(a) 5.00, v =    c
(b) 999. What is the speed of the electron in each case?v =(1 -    $ \times 10^{-7}c$)

参考答案:     查看本题详细解析

标记此题
85#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A farm boy studying physics believes that he can fit a 15.0-m-long pole into 6e 68k hheoy;v6nsl3ra 12.0-m-long barn if he runs fashs6vhe6o y nrl;3 8ke6t enough (carrying the pole). Can he do it? Explain in detail. How does this fit with the idea that when he is running the barn looks even shorter to him than 12.0 m? 

参考答案:     查看本题详细解析

标记此题
86#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two moles of hydrogen and one mole of oxygen react to form two moles ofq*2;ujz()xlmc aj;lu l1thq*zo q3vn*4n9 xo water, o;ox z;clqunvl*)jx j *39t(24aqzl mq n*u1hthe energy released is 484 kJ. How much does the mass of the elements decrease in this reaction?
$\Delta m$ =    $\times 10^{-12} \, \text{kg}$
What % of the total original mass of the system does this mass change represent?    $ \times 10^{-8}\%$

参考答案:     查看本题详细解析

标记此题
87#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a nuclear reaction two identical particles are created, traveling in -,9u xfb6: ew7yf lfbmopposite directions. If the speed of each particle is 0.75c, relative to the laboratory frame of reference, what is one particle's speed relatf,6u:wbb ely9f mx-7five to the other particle? u =    c

参考答案:     查看本题详细解析

标记此题
88#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An astronaut on a spaceship traveling at 0.o-t2pb1 6v 1xrqeihh 9u34t ie75c relative to Earth measures his ship to be 25 m long. On the sh9 itixprvh bo2t13 4- hq1u6eeip, he eats his lunch in 23 min.
(a) What length is the spaceship according to observers on Earth? L =    m
(b) How long does the astronaut's lunch take to eat according to observers on Earth? $\Delta t$ =    min

参考答案:     查看本题详细解析

标记此题
89#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
You are traveling in a spaceshipgp 1loxe s8e au ,x6ez85ya.5t at a speed of 0.85c away from Earth. You send a laser beam toward the Earth traveling at velocity c re,8uel 1teesxypx8a za5.5go6lative to you. What do observers on the Earth measure for the speed of the laser beam?
参考答案:    

标记此题
90#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A spaceship and its occupants have a total mass of 150,004u:n -ohcv2y y0 kg. The occupants would like to travel to a star that is 25 light-years away at a speed of 0.60c. To accelerate, the engine of the spaceship cyy v4nc o-2uh:hanges mass directly to energy. How much mass will be converted to energy to accelerate the spaceship to this speed?    kg
Assume the acceleration is rapid, so the speed for the entire trip can be taken to be 0.60c, and ignore decrease in total mass for the calculation. How long will the trip take according to the astronauts on board?$\Delta t_0$ =   y

参考答案:     查看本题详细解析

标记此题
91#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose a 12,500-kg spaceship left Earth aai9z*;a.qs5wl5x7nnrw h d idw9, ej2 t a speed of 0.99c. What is the spaceship's kinetic energy? Compare with the total U.S. annual energywl5i5hz2d9 j; x9a d*iaenn.s,r7wqw consumption (about $10^{19} \, \text{J}$). KE =    $ \times 10^{20} \, \text{J}$

参考答案:     查看本题详细解析

标记此题
92#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 42,000-kg spaceship is to travel to the vni7e *u(7td ayicinity of a star 6.0 light-years from Earth. Passengers on the ship want the (one-way) trip to take no more than 1.0 year. How much work must be done on the spaceship to bring it to the speee*d7(atin7 uyd necessary for this trip? u =    c

参考答案:     查看本题详细解析

标记此题
93#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.68-kg mass oscillates +k. zfrzl4xg4 on the end of a spring whose spring stiffness constant f 44xzg+l. rzkis $k=48.7 \, \text{N/m}$. If this system is in a spaceship moving past Earth at 0.900c, what is its period of oscillation according to
(a) observers on the ship, T =    s
(b) observers on Earth? $T_{earth}$ =    s

参考答案:     查看本题详细解析

标记此题
94#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A pi meson of rest mas 91a-n z0az4avfi u-sbs $m_\pi$ decays at rest into a muon (rest mass $m_\mu$) and a neutrino of negligible or zero rest mass. Show that the kinetic energy of the muon is $KE_\mu = \frac{(m_\pi - m_\mu)^2 c^2}{2m_\pi}$.
参考答案:    

  • :
  • 总分:94分 及格:56.4分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题,此次习题练习共有 94 道题
    本系统支持习题练习,作业与考试三大模式,作业考试自动评分,成绩排序一键导出,可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣,想加入我们或者想进行任何形式的合作,请加微信 skysky1258

    浏览记录|手机版首页|使用帮助|题库网 (https://tiku.one)

    GMT+8, 2025-7-23 08:17 , Processed in 0.289306 second(s), 209 queries , Redis On.