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习题练习:Momentum and Energy



 作者: admin发布日期: 2024-08-05 18:30   总分: 9分  得分: _____________

答题人: 匿名未登录  开始时间: 24年08月05日 18:30  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  
  04.22: One implication of Einsteiftv j5q )19pm-4kmmd wn's theories is that

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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 cf:,2hob9 :/w h ws,gnkpr,l qkan spontaneously convert an electron h:f g,qbr2ko :, wnl/wph9,ks completely into energy in the laboratory without any other material required. What is the conclusion about this claim from our current understanding of physics?

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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 va6g4pbroy79jp - co4 speed of light. Electron #2 moves with speed 0.60 c. What isjv 44acr6 9pgyb-7po o the ratio of the kinetic energy of electron #2 to electron #1?

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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 /rjtx306 cxfn v82 fm f mc/nxd1++rqgof the linear momentum (in units of kg.m/s) of an electron moving in a straight line ij+0rn/8 dm3t1q cf vxm/+r6fx 2 xfcgnf 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 magnitudjf, l:q0,kk g9)ezkm. nfds9ge of their linear momentum having a ratio of 2:1. If the slower electron d,s ,g 0nqk9gffzjk: lm).ek9 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 w6clnkez 609 8v t-ms mp-nc9qqith an electron is twice its rest energy. At what speed is the electron travelin066e kmql -q-cn n8vc psz99mtg(in unit 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 toouxb ,;ir zodn. q hr5dbtp2,5udh *9.tal energy of 500 MeV 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 rest. After thise,.yh w+ (qeee object is accelerated to a speye+wee,q(. h eed 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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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.49: Two identical p0qdl:kz*3mk k articles 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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