Physics Unit26: Special Theory of Relativity - https://webassign.org

?E-Test & E-Assign?Generic Physics?Physics Unit26: Special Theory of Relativity

My Identity | My ExamLogs | Wrong Records | Saved Problems | Help

Unused Images

Tips: allowed image types are: gif, jpg, jpeg, png, webp; When uploading is finished, thumbnails will be generated and shown above. You can either double click on the thumbnail or simply drag the thumbnail with your mouse, the image will be bound to the current problem and displayed below it.

Used Images in Current Log

Tips: What is shown in this column are all the images associated with this exam log. Those bound to a particular problem will also be displayed immediately underneath it; Deleting any images will make them to be transfered to the "Unused images" category.

PRACTICE：Physics Unit26: Special Theory of Relativity

本Practice来源于https://webassign.org，是在线Practice的打印版，您也可以访问本平台网站(https://webassign.org/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 325 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://webassign.org/test325.html
Author: physics Total Marks: 61 mks Marks Awarded: _____________

User Name: No Login Start Time: 23年05月01日 10:04 Switch to Whole-Paper Mode

1#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

You are riding in a spaceship2l7:0x , 9 tybqn)f+dcg tgmgj that has no windows, radios, or other means for you to observe or measure what is outside. You wish m :gdgtg+xfq 0 lj9,7b2cyt )nto determine if the ship is stopped or moving at constant velocity. What should you do?

A. You can determine if the ship is moving by determining the apparent velocity of light.

B. You can determine if the ship is moving by checking your precision time piece. If it's running slow, the ship is moving.

C. You can determine if the ship is moving either by determining the apparent velocity of light or by checking your precision time piece. If it's running slow, the ship is moving.

D. You should give up because you have taken on an impossible task.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

2#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The Michelson-Morley experiment was designedevz)pbg* yy-4 to measure

A. the relativistic mass of the electron.

B. the relativistic energy of the electron.

C. the velocity of the Earth relative to the ether.

D. the acceleration of gravity on the Earth's surface.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

3#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Michelson and Morley conclud9wl bzjss/bz(: ow 19ded from the results of their experiment that

A. the experiment was a failure since there was no detectable shift in the interference pattern.

B. the experiment was successful in not detecting a shift in the interference pattern.

C. the experiment was a failure since they detected a shift in the interference pattern.

D. the experiment was successful in detecting a shift in the interference pattern.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

4#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

You can build an interferometer yourself if you use ppnl4u4br4 j3 the following components:

A. a light source, a detector screen, a partially silvered mirror, a flat mirror, and a glass plate.

B. a light source, a detector screen, two partially silvered mirrors, and a glass plate.

C. a light source, a detector screen, two partially silvered mirrors, a flat mirror, and a glass plate.

D. a light source, a detector screen, a partially silvered mirror, two flat mirrors, and a glass plate.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

5#

Free-Response ( 1.0 marks) Whole-Paper View Save Problem

State the relativity prin fwqzx45oy(2nh6vul 3e 4;wguciple.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

Correct Answer:

Join the discussion for this question

6#

Free-Response ( 1.0 marks) Whole-Paper View Save Problem

State the three unprovable assumpt/knrd r 0d;uu 0fb:8nmions of Galilean-Newtonian relativity.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

Correct Answer:

Join the discussion for this question

7#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The theory of special relativityw*o8 b er+l p31tom)qj

A. is based on a complex mathematical analysis.

B. has not been verified by experiment.

C. does not agree with Newtonian mechanics.

D. does not agree with electromagnetic theory.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

8#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

One of Einstein's postulates in formula 9konk ax34nc8ting the special theory of relativity was that the laws of physics are the same9cnk x84knao3 in reference frames that

A. accelerate.

B. move at constant velocity with respect to an inertial frame.

C. oscillate.

D. are stationary, but not in moving frames.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

9#

Free-Response ( 1.0 marks) Whole-Paper View Save Problem

State the first postulate of sx : -ckf/k.-r tjup+wipecial relativity.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

Correct Answer:

Join the discussion for this question

10#

Free-Response ( 1.0 marks) Whole-Paper View Save Problem

State the second postulate of special relati2kcxb;s *7b-s n( lfjbvity.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

Correct Answer:

Join the discussion for this question

11#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

If you were to measure your pulse rate while in a spaceship modkg 4a4re; bp8ving away from the Sun at keg4ab r8 p4d;a speed close to the speed of light, you would find that it was

A. much faster than normal.

B. much slower than normal.

C. the same as it was here on Earth.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

12#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Relative to a stationary observer, a mtj5k3 zi f/gs88m ani)oving clock

A. always runs slower than normal.

B. always runs faster than normal.

C. keeps its normal time.

D. can do any of the above. It depends on the relative velocity between the observer and the clock.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

13#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The gamma factor is defiaicmz)57.j(kff .b,5 ru3i5 (pkxww; k qtsxbned as $\gamma = 1 / \sqrt{1- (v/c)^2}$, therefore gamma ($\gamma$)

A. can be zero.

B. can be any number less than or equal to one.

C. can be any number greater than or equal to one.

D. cannot equal one.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

14#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Suppose one twin takes a ride in a space ship travelingc*fxtv-;r q: y at a very high speed to a distant star and back a r-ftcvqy; :*xgain, while the other twin remains on Earth. The twin that remained on Earth predicts that the astronaut twin is

A. younger.

B. the same age.

C. older.

D. cannot be determined from the given information

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

15#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Relative to a stationary observer, a m ocu(m0y4m tt*oving object

A. appears shorter than normal.

B. appears longer than normal.

C. keeps its same length time.

D. can do any of the above. It depends on the relative velocity between the observer and the object.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

16#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An object moves in a directiouk 5hrr1djp+ 8vex0r/ w razs;g4qcr**q r8t 6n parallel to its length with a velocity that approaches the velocity of light. The width of tuct1/; r svxrdjz5 4w*kr*errq hp+ 60q88gr ahis object, as measured by a stationary observer,

A. approaches infinity.

B. approaches zero.

C. increases slightly.

D. does not change.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

17#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An object moves in a direction parallel2td+qe m(-ajdnn *(vna341 p pr5flhe to its length with a velocity that approaches the velocity of light. The length of this objf4 5p1nrv3 hnan2qdm-e de( (jlpa +t*ect, as measured by a stationary observer,

A. approaches infinity.

B. approaches zero.

C. increases slightly.

D. does not change.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

18#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

As the speed of a particle approaches the speed )goob)i, p- jkof light, the mass of the particleiob)p-o) j,k g

A. increases.

B. decreases.

C. remains the same.

D. approaches zero.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

19#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

As the speed of a particle approaches the speed of light, the momentum of twrsv:9xut 5ydx9k qn8 l*as */he par 9:ry5d* xkxvq9 8ulsnwt*a /sticle

A. increases.

B. decreases.

C. remains the same.

D. approaches zero.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

20#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A spear is thrown by you at a very 3 bshep0;k9wu +dj1wl1ka ;lgka - .qthigh speed. As it passes, you measure its length at one-half its normaewg+ hksk1wkp3udl t1 aq ;a.lj9-0;bl length. From this measurement, you conclude that the moving spear's mass must be

A. one-half its rest mass.

B. twice its rest mass.

C. four times its rest mass.

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

21#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What happens to the kinetic eneruuf; zkf 5+e:bthps (h+/yk0ua .6xuugy of a speedy proton when its relativistic mass doublf uuu. 0a kphs z(:huuf;yt6ek5++x/b es?

A. It doubles.

B. It more than doubles.

C. It less than doubles.

D. It must increase, but it is impossible to say by how much.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

22#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What happens to the total relativistic energy of a speedy proton whe3)wfgmh1v.nb. vrz -l n its relativistic mass doubles?1vnh.-lwz .v3 br) gfm

A. It doubles.

B. It more than doubles.

C. It less than doubles.

D. It must increase, but it is impossible to say by how much.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

23#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Consider a particle a8 hw orohfpc-;8pe)xg5 11mgof mass $m$ and rest mass $m_0$. Which of the following is the correct expression for the kinetic energy of such a particle?

A. $\frac{1}{2} m_0 v^2$

B. $\frac{1}{2} m v^2$

C. $m c^2 - m_0 c^2$

D. $\frac{1}{2}(mc^2 - m_0 c^2)$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

24#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Consider two spaceships, each traveling at 0.50c in a straight line. Ship A is(x+g)ps 80vucm o zsfiz/i2-w 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 the Sun. What do they measure/)czwx vs-o0g f2i msz(iu+p 8 for this velocity?

A. Ship A measures it as less than c, and ship B measures it as greater than c.

B. Ship B measures it as less than c, and ship A measures it as greater than c.

C. On both ships it is measured to be less than c.

D. On both ships it is measured to be exactly c.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

25#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Which of the following depends on the oba0 ji,by*/mv xserver's frame of reference?

A. the mass of the proton

B. the length of a meter stick

C. the half-life of a muon

D. all of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

26#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

As the velocity of your +n9h-d-/uyk4q rdk yp,k5r yvspaceship increases, you would observe

A. that your precision clock runs slower than normal.

B. that the length of your spaceship has decreased.

C. that your mass has increased.

D. all of the given answers

E. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

27#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A boat can travel 4.0 m/s in still water. With x/f4f odkl5w f3* (yglwhat speed, relative to the shore, does it move in a river that is flowing at 1.0 m/s if the boagxl4f(fk53*y dfo l /wt is heading upstream?

A. 3.0 m/s

B. 4.1 m/s

C. 4.8 m/s

D. 5.0 m/s

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

28#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A boat can travel 4.0 m/s in still water. With what speed, relative 9yj(a3 1)exfqofwwx 9 to the shore, does it move in a river that is flowing at 1.0 m/s if the boat is heading q 3xjw1ay9fe x9 f)(wodownstream?

A. 3.0 m/s

B. 4.1 m/s

C. 4.8 m/s

D. 5.0 m/s

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

29#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A boat can travel 4.0 m/s in still water. With what speed, relat p2v* /n7k:)doobqe trive to the shore, does it move in a river that is flowing at 1.0 m/s if the boak/p7n r2)ob te:vq*d ot is heading straight across the river?

A. 3.0 m/s

B. 4.1 m/s

C. 4.8 m/s

D. 5.0 m/s

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

30#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How fast should a moving clock trua.c)vyz zfiw+ 3dt39avel if it is to be observed by a stationary observer as running at one-half i 3 y9auitc vf3d+zz.)wts normal rate?

A. $0.50 \; c$

B. $0.65 \; c$

C. $0.78 \; c$

D. $0.87 \; c$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

31#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A spaceship takes a nonstop journey tol7rmj aat0p o sf:6apat (*r)1 a planet and returns in 10 hours according to a clock on the spaceship. mpajo6:aa r*tstfl0par()7 1If the speed of the spaceship is 0.80c, how much time has elapsed on the Earth?

A. $3.2 \; h$

B. $7.0 \; h$

C. $15 \; h$

D. $17 \; h$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

32#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A set of twins, Andrea and Courtney, are initially 10 years old. Whil4,+a;wo urf*0*tse8t uqosrn e Courtney remains on Earth, A* r*uouqwfsos0+4aernt,t; 8ndrea 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 is Andrea upon her return?

A. $10 \; years$

B. $12 \; years$

C. $18 \; years$

D. $20 \; years$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

33#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

One 20-year-old twin brother tacjma/ t( t4*tikes a space trip 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 and the age of the Eartj 4/t(aict*t mh-based twin brother?

A. 20; 30

B. 30; 50

C. 50; 70

D. 70; 90

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

34#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A meter stick is moving toward you with a speed of 0.80c. What is its leng oem1lyvm ( q(5r+3nclerpr29th?

A. zero

B. $0.40 \; m$

C. $0.60 \; m$

D. $1.0 \; m$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

35#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How fast would a rocket ship have t/ z7nbz4 xu1w0+j qqyio move to contract to half of its proper length (as observed by a stationary objecni71y qz+x4b 0 /ujzqwt)?

A. $0.50 \; c$

B. $0.65 \; c$

C. $0.78 \; c$

D. $0.87 \; c$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

36#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The length of a spaceship is 10 m wh0 4tk-3hrzpwiz*s 78xs0 lxaqen it is at rest. If the spaceship travels by you with axls ptz 8ws 0-r0zqah43x*7ik speed of 0.70c, what length does it appear to you?

A. $5.5 \; m$

B. $7.1 \; m$

C. $12 \; m$

D. $18 \; m$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

37#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The closest star to our solar system is Alpha Centauri, which is 4.x q6/; hbksa4u30 light years away. A spaceship with a constant speed of 0.800c relative to the Earth travels toward the star. What distance does the spacek/;xaqub4s6 h ship travel according to a passenger on the ship?

A. $2.58 \; ly$

B. $3.52 \; ly$

C. $4.12 \; ly$

D. $4.30 \; ly$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

38#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The closest star to ournykz;b)9h,t kp 2t cr ip815by solar system is Alpha Centauri, which is 4.30 light years away. A spaceship with zy,p9nk;)rc58ptb2ih bty 1k a constant speed of 0.800c relative to the Earth travels toward the star. How much time would elapse on a clock on board the spaceship?

A. $3.23 \; y$

B. $4.40 \; y$

C. $5.15 \; y$

D. $5.38 \; y$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

39#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The closest star to our solar system is w g;n8i278zctjg 9mtp 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 much time would et8pg7i 8jc9wnzm gt; 2lapse on a clock on the Earth?

A. $3.23 \; y$

B. $4.40 \; y$

C. $5.15 \; y$

D. $5.38 \; y$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

40#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron is traveling at 0.85c. What is its massl8-bc*mm6+ htmus ec/ ? (The rest mass is $9.11 \times 10^{-31} \; kg$.)

A. $1.4 \times 10^{-29} \; kg$

B. $7.2 \times 10^{-30} \; kg$

C. $1.7 \times 10^{-30} \; kg$

D. $2.4 \times 10^{-30} \; kg$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

41#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the speed of a proton if its mass is t*p va *;w4whymwice its rest mass?

A. $0.50 \; c$

B. $0.68 \; c$

C. $0.73 \; c$

D. $0.87 \; c$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

42#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

If the velocity of your spaceship goes from 0 i.p).ez4:v o6qx s wtk0off-o.3 c to 0.6 c, then your mass will increase bo.k.so p4ov6e0 ifzw: q-fxt) y

A. 19%.

B. 38%.

C. 100%.

D. 200%.

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

43#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the momentumi3fbh53:4m oinlstxz/ . n1v/6ztwz m in $kg \cdot m/s$ of a proton when it is moving with a speed of 0.60c?

A. $1.2 \times 10^{-19} \; kg \cdot m/s$

B. $1.5 \times 10^{-19} \; kg \cdot m/s$

C. $3.0 \times 10^{-19} \; kg \cdot m/s$

D. $3.8 \times 10^{-19} \; kg \cdot m/s$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

44#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

During a reaction, an element loses0wv vq84xt2 skp1 qpld7 b)6es $4.8 \times 10^{-28} \; kg$ of mass. How much energy (in Joules) is released?

A. $4.3 \times 10^{-11} \; J$

B. $1.4 \times 10^{-19} \; J$

C. $1.6 \times 10^{-36} \; J$

D. $5.3 \times 10^{-45} \; J$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

45#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

During a reaction, $1.7 \times 10^{-4} \; J$ of energy is released. What change of mass would cause this?

A. $5.1 \times 10^{-4} \; kg$

B. $1.5 \times 10^{-13} \; kg$

C. $4.8 \times 10^{-18} \; kg$

D. $1.9 \times 10^{-21} \; kg$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

46#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How much energy would be releaserl0azn6m3/qe 7lg c0ld if 2.0 kg of material was lost during a reaction? / mq7a0nelgclr6z0l3

A. $1.8 \times 10^{17} \; J$

B. $1.5 \times 10^{16} \; J$

C. $6.0 \times 10^{8} \; J$

D. $4.7 \times 10^{-8} \; J$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

47#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The amount of energy equivalent to two kilogram of ma03 g6*:mjxtzch :6qvvtqw4)lswdf0ar( gs4 g ss at rest is

A. $18 \times 10^{16} \; J$.

B. $3.0 \times 10^{8} \; J$.

C. $9.0 \times 10^{16} \; J$.

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

48#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The atomic bomb that was dropg b dk7l9 n,6agl.9*y8ylni6ick,xh zp3 bb2oped 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 20,00ahb6k kiiynd z c,n8gl93ll,bo6 27p*.xby9g 0 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!

A. $1 \; g$

B. $10 \; g$

C. $100 \; g$

D. $1 \; kg$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

49#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The kinetic energy of a proton is 80% of its total energy. lcv+)b7;l+vs 5mcyqp od n2o+What is the speed of the prot2v loycn pd v++7s )cl;+obqm5on?

A. $0.02 \; c$

B. $0.87 \; c$

C. $0.98 \; c$

D. $1.0 \; c$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

50#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The kinetic energy of a proton is 80% of its total energy. What isphtldv4 ku,g8u1wvfr . 7+.uq the momentum inq1pd vu,84f.+hwl.g vr 7kutu $kg \cdot m/s$ of the proton?

A. $5.0 \times 10^{-19} \; kg \cdot m/s$

B. $2.5 \times 10^{-19} \; kg \cdot m/s$

C. $5.0 \times 10^{-18} \; kg \cdot m/s$

D. $2.5 \times 10^{-18} \; kg \cdot m/s$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

51#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What energy is released (in MeV) during a reacbxl3,neescg0a 1)dui/mio b9c( 6g k2tion in which $1.67 \times 10^{-25} \; kg$ of material is converted to energy?

A. $5.0 \times 10^{-14} \; MeV$

B. $4.1 \times 10^{-7} \; MeV$

C. $3.1 \times 10^{-4} \; MeV$

D. $9.4 \times 10^{4} \; MeV$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

52#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How much mass is lost during a reazyf0 +pmb/ol( w)v+5nfrw rt 0ction in which $1.7 \times 10^{8} \; MeV$ of energy is released?

A. $1.8 \times 10^{-8} \; kg$

B. $5.7 \times 10^{-9} \; kg$

C. $1.9 \times 10^{-17} \; kg$

D. $3.0 \times 10^{-22} \; kg$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

53#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the total energy of an electron moving with a speed ob)u9;zq z 5din zb/0isf 0.95c?

A. $2.6 \times 10^{-13} \; J$

B. $8.2 \times 10^{-14} \; J$

C. $1.1 \times 10^{-13} \; J$

D. $1.2 \times 10^{-14} \; J$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

54#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

How many joules of energy md/*tz14(o-eo7 z6vuvsnin u are required to accelerate one kilogram of mass from rest to a1t(uds- o*moevz7 i6 / zuv4nn velocity of 0.866 c?

A. $1.8 \times 10^{17} \; J$

B. $9.0 \times 10^{16} \; J$

C. $3.0 \times 10^{3} \; J$

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

55#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In a nuclear plant, xrf+o 8odh;:c $1017$ J of energy is available from mass conversion. How much mass was lost?

A. $0.1 \; kg$

B. $1 \; kg$

C. $10 \; kg$

D. $100 \; kg$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

56#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

An electron is accelerated through 100 kV. By what factor has,-lqo j v/ u5/dqfoo(g its mass increased withfj/ovqq/uo -5o,( ld g respect to its rest mass?

A. 1.20

B. 1.55

C. 4.25

D. 8.00

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

57#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

You are in a rocket traveling away from the Sunkamip )f.7i/c ( hxmq1 at 0.95c. You measure the speed of light fro.a i)/xm 1qi7mkpfh(cm the Sun to be

A. 0.05c.

B. 0.95c.

C. 1.0c.

D. cannot be determined without knowing the frequency of the light

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

58#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

Two spaceships are traveling through space at 0.60 c relative to the Eawb ;x p*ulb-h,rth. If the ships are headed directly toward each other, what is their approach velocity, as measur lx;u-, *hbpwbed by a person on either craft?

A. $1.2 \; c$

B. $c$

C. $0.60 \; c$

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

59#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A fast spaceship is traveling withfi qw 4i g4fydn.uf;;x7:qc 52gehec2 a speed of 0.80c. How fast would light travel from the hfy4 d;c4 ehq7 incxigfwu ef2g25q .:;eadlights of the ship relative to a stationary observer?

A. $0.20 \; c$

B. $0.80 \; c$

C. $1.0 \; c$

D. $1.8 \; c$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

60#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A spaceship moves away from the Earth with a speed of 0.80cvbb fx5jwx/ek 5)eu 6bz 7g3dd3b,3 go. The spaceship then fires a missile with age3,x/def6d ) b3v uk5b xz3w5 jbogb7 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?

A. $0.30 \; c$

B. $0.50 \; c$

C. $0.93 \; c$

D. $1.3 \; c$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

本Practice全部题目来源于https://webassign.org，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

61#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A spaceship moves away from the Earth with a speed of 0.80c. Theopsqt a,l. ,a,42hu o d/jil0f 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 missile is o20,tajol fs uph,laq/id.4 , fired toward the Earth?

A. $0.30 \; c$

B. $0.50 \; c$

C. $0.93 \; c$

D. $1.3 \; c$

绑定到本题的附件链接:
绑定到本题的上传图片:

Correct Answer:

Join the discussion for this question

:

Total:61 mks Pass:36.6 mks Duration:Unlimited

未答题:

已答题:0

答错题:

当前第题，此次Practice共有 61 道题

试卷内容到此结束! © 2024 https://webassign.org版权所有

Archiver|Mobile Version|Jailroom|https://webassign.org

2025-1-10 23:45 GMT+8 , Processed in 0.187489 second(s), 134 queries , Redis On.

To Top