Momentum and Energy - 无忧得胜-网上国际课程 (5edu.win)

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1#

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04.22: One implication of Ein x4koq6 ww1t-r,3 jlxrstein's theories is that

A. all energy has mass properties.

B. moving particles apparently lose mass.

C. momentum is not conserved in very high-speed collisions.

D. a meter stick moving rapidly perpendicular to its length appears shortened in length.

E. every process is relative.

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

06.35: A scientist claims to have perfected a technique in which he can spontan(bvm+.l-q3 tf m eyhh:eously convert an electron completely into energy in the laboratory without any other material required. What is the conclusion about this claim from our current understanding of physfl+th yqe-3hmbm. :( vics?

A. This is possible because Einstein’s equation says that mass and energy are equivalent… it is just very difficult to achieve with electrons

B. This is possible and it is done all the time in the high-energy physics labs.

C. The scientist is almost correct… except that in converting the electron to energy, an electron’s anti-particle is produced in the process as well.

D. The scientist is almost correct… except that in converting the electron to energy, a proton is produced in the process as well.

E. This is not possible because charge conservation would be violated.

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

08.45: Electron #1 moves with speed 0.30 c where c is the speed of lighlk9v crrane+*s uub2lw;4*mtp,y+2bx gs+/ gt. Electron #2 moves with speed 0.60 c. What is the ratio of the kinetic energy of electron #2 to electron #1? ela2;*,w *rn2 + ybvu +gs4t/ l+sbpgrkm9xcu

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.50: What is the magnitude of the linear momentum (in units of kg* o11qtxsivn.ay9e 6c c.8,nge0 fp nn.m/s) of an electron mov ync9.vco1 n xn0sef6ige.pn8*q, 1ating in a straight line if it has $3.2\times\:10^{−13}J$ of kinetic energy?

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

13.49: Two electrons move with the magnitude of their linear momentum having .ja7xowac1e 3mc.i4q a ratio of 2:1. If te3j co..aq w4mi1 7cxahe slower electron moves with a speed of $1. 20\times\:10^8\:m/s$, what is the speed of the faster moving electron (in unit of m/s)?

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

15.49: The kinetic energy associated with *tvob* 7mi pg7sz(ubqemf93 5 an electron is twice its rest energy. At what speed is the electron traveling(in unitf*omigv79b psub 5z q(e* 37mt of m/s)?

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

18.49: A particle has a total energy of 500 Meajdnbrh e2 r:p u69t5-V and a linear momentum of 300 $\frac{MeV}{c}$. What is the mass of the particle?

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

10.50: An object of mass m is initially at rdg.;ke)q7zw)afs + ugest. After this object is accelerated to k zd+sw g7fqeug.;)a )a speed of $2.4\times\:10^8\:m/s$ , it collides with and sticks to a second object of mass m at rest. Immediately after
the collision, what is the common speed of the two masses (in unit of m/s)?

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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信xxxxxxxxxx，获取更多资料
教师可以抽题组卷或一键复制本试卷，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

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

17.49: Two identical s l bu tiv36e/3+(ld;u:p panvparticles travel to the right. The particle traveling at $2.4\times\:10^8\:m/s$ collides with and sticks to the other particle traveling at $1.8\times\:10^8\:m/s$. Which one of the following choices best represents the speed of the resulting object after collision(in unit of m/s)?

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