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习题练习:Physics Unit11: Vibrations and Waves

 作者: physics 发布日期: 2022-08-06 21:32   总分: 99分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月06日 21:32  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  
  The time for one cycle of a,upev(k10 o6d:br qsl periodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number of cycles pe:a w08qgh1y4pedaby . jq -fos 6,0fnrr unit time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from the ecr p)snpb;5h8mlc5 /- d pif0rquilibrium point is cal5cmn8 spfr)rb /0lhpi- pdc5;led the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at its maximum dthcujvp (8209 u:rid aisplacement from equilibrium, itscptd(a8 9vu2j: h u0ri instantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass passes through tjux)0 fg4e9 tknkz.c, he equilibrium position, its instantaneous veloxu 0 k9nz.cfkjt4, )egcity

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the -dds om*v8 ooe0( 8rmhnk9 f)fmass is at maximum displacement from equilib - m88vo0frnfs (dm)edh 9o*okrium, its instantaneous acceleration

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and b (ez 8b ao5jt:tox,3juobs up and down between points A and B 8oot(5,et:b j ujxaz3. Where is the mass located when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to abfxj7kg-;pl:4 o/j cu vertical spring and bobs up and down between points A and B. Where is the mass located when ijk4;gpfo- lx 7bj: u/cts kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down berim(1-u;3a2ls z ) *lhpvouegtween points A and B. Where is the mass located when its pot; 1 )g ela(poul*uhr-zsv im23ential energy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and botlka, /h(fuv62oqyq* bs up and down between points A and B. Whert qola*,kufq6 (v/2h ye is the mass located when its potential energy is a maximum?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the amplitudi e8vfjy5n nnh*l1, 1ue of a vibrating mass-and-spring system produces what effect on the system's mechanical energy?1, 8lvnn*j h1 fuy5ien

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-springzbd(8sdmjy1x ,erb56 , p3 sbf system produces what effect on the system'f,sm1dsbrb 5z86 xpe3jbd,(ys mechanical energy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring cons . /s s)p3+lghiplt4gntant of a vibrating mass-and-spring system produces whi )lg3slp+4t nhgps/.at effect on the system's mechanical energy?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass oscillates on the end of a spring, both on Ear 6phdd*wei14lx j4f l.th and on the Moon. Where is the period the gread x1jid 46*hl4plfe.wtest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant eb;5 2:hm s yuqky3iu(k of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in m2e (b 3 u5:khyqiu;sythe system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-and-po:( i) pjvyd:spring system causes what kind of change in the resonaodp (:iv:j)ypnt frequency of the system? (Assume no change in the system's spring constant k.)

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude k;aw9ejfbcm0. ny1u(of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume noy;m u1c9 (baw0.nejkf other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a m3fq. dzi bs:2/;gxcwsass M attached to a weightless string of length L. For this system, when undercq/b:s2 iwxs3df;. g zgoing small oscillations

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the mass of a simple pendulum is tripled, the timbmw*h 6 82ltgbe required for one completl mbgbh 2*t6w8e vibration

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and B are 3.0 m long. The period of A is T. 6i:nzd 0;kxt3zj/bhfPendulum A is twice as heavy as px zk;3i6htb n0jf /d:zendulum B. What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pey ,jx,y on amlbbtmh()-18io-ndulum is tripled, the time for one complete vibration 8mt bon-mal1yxby oi(,j-,) hincreases by a factor of

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What happens to a simple pendulum's fztj*(r edtf+x u(3 byuo gw*0/requency if both its length and mass are increased?b(g/+ t( x0 zwdyu*3 ueojrtf*

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swings back and forth at twice the frequency of np e)b- el 6c:js(a-07 bwmupbxy5q r7simple pendulum B. Which statement is cor)(:s --e 5emjcxa70q u7 wbbl p6npybrrect?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum uo+*zugx+9*u fd5mu rto the Moon, where the acceleration of gravity is less than on Earth, the resonant frequency of the pendu**f9xgdzm r+5uu+ u oulum will

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 represents v2j,3gfr b5 7qef+m dpw0)1aph se/up


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve B in Fig. 11-1 represkr*csis5)ks , zhdqzyhn wr7/32a u-+ents


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve C in Fig. 11-1 represenl9hs 173 07uf28hlihwz cyeqsx4x r l4ts


本题所包含的其它图片:

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibration, the amplitude of vibrationk*fkul0a(fh.9 t gsj3 is found to depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum dig-y -87g),i)gco c(scprg t3g po i4xgsplacement of points of the wave from equilibrium is ca-ggo c)(g ipxcc gspt,r 4y-o3i g7)8glled the wave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between succeswfo.nvb xml3lid) n6g/37 e9gy *ts :jsive crests on a wave is called the wave's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wav7vfry.gfir)h8po 9 .he passing a point per unit time is called the wave'sr.vhff)7g 9ro 8ihpy.

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequency times the wavelength is the wave zjlol;-;bz .e's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave increases. What happens to the distance between succpotjg4:ok(9/k dpb d f.fv,7x7n 7ebdessive crests if the spee4k7n/ fbdkvjxpg7fo (t : ,pd9d.7ebod remains constant?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a strin /lyko k6(2kvng with wavelength l and frequency f. A second wave on the same string has wavelength 2l and trave( onk2vl 6/ykkls with the same velocity. What is the frequency of the second wave?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a string of length L, mass M, and tension T. 0;x zhib,e6m 9x 9houp A standing wave is set up. Which96z, 0h uix;px9omebh of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension v,zvy1wri8a6h6g gl9p3rv b0 T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the mass of 9g6 wp h36ir yra,vvvlb g1z08the string is increased to 2m, with no change in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wave ip k u3 8a6plc*gq)*a0y* itgden the string is v. What will bucpkeyl d* gt)p3 g* a*q6a08ie the speed of a wave in the string if the length is increased to 2L, with no change in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speeyeqk6p, ke;.ov ,ka+hd of a wave in the string is v. What will be the speed of a wave in the string ,h +6k,;ee a.vkopykq if the tension is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wav6y)d) l( ieosqcii73qe. As an S wave travels through the Earth, the relatiidi ()oq36leys q)i7 cve motion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudinal wave. As a P wave travels th us9-ye0l 5-bome:m ajrough the Earth, the relative motion between the P waveuy j eo0se9 -m-l5m:ba and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wavepyj) yy :nghu p6;l9bf+3xzq2 is

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave pulse traveling to the right alo 9srrmtgn* 022igsdlb r(gi4 )ng a thin cord reaches a discontinuity where the rope becomes thickers2(rb rgdg mrin92)04gst l *i and heavier. What is the orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positive amplitudes pass each other on a str45c s id6w;o z)tye40cu8 ofpoing, one is traveling toward the right and the other toward the left. At the point that they occupy the same regi0 d;4cos e izc)85owyo6fu4tp on of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass r-6xjtn dcam.j l)*z,each other on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. At the point that they occupynm t,6z*r )c-ld.ajx j the same region of space at the same time

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a system, such as a p1. qixu0ha;u string fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the t.(b d7gwefp4bz rf9p3ension in a violin string, the fundamental frequency of that strep7d3 4zf9(wpfrgbb .ing will increase by a factor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring consvx dl 5*xd2,kgk;7jtetant of a spring that stretches 2.00 cm when a mass of 0.600 kxj5x,vdt;k*g 2el 7 kdg is suspended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spri/ef3dgilyzk e(h+vy43 r95 tppk31m i (xbss.ng constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What3 (mr3l1(4p +k tei5x9eg3v k/ yypd .hbissfz is the amplitude?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring const( ;4 pojtgnbl0ant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What l;40 p(gojtb nis the period of oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along,(j1m2o +j/f f jr rvwgakn46i a horizontal, frictionless surface. The spring is initially streffni rv/+,2k rjjogw4 1 amj(6tched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the frequency of oscillation?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. It goes through 10 complete oscv7vnt/n;4p-mv0w+ml8qf rqpillations in 5.0 spl n8n0v-7 fqr;+vvm4tmp /wq. What is the period?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring of sprj 6u3zg3fqb. opuu g4-r8d6rl ing constant 20 N/m with an amplitude of 0p4 df8 l36.u3q -brrjzg6uuog .30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring o8 , d er)sfxp9l0 3qq,7lkhhnzmi -.hhf spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. Whal7-xfm ,8lqnq3h)9 sh h,pdzk.0i e rht is the total energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with amplitude of 4 cm. The energy uxqs n/b.p7*bis 8.0 J at this time. Thb7bp.nu*q/sx e mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a sprin*g eiu,nn.6o hg of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a spe gine. n,o6hu*ed of 1.5 m/s at the equilibrium position. What is the amplitude of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is atta :me- y;em2.qu qsgtjfh 2s*-rjl0 z2ached to a spring of spring constant 20 N/m along a horizontal, frictionless surfaj*j- 2 h2eusa;leyqs-qgf2tr0.mz m: ce. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of soqbk3xp5 mb1 /sj2js 7pring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mec3o bx1s b7/k q5p2jsmjhanical energy of this system?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of spring gwsxag; z*9zq)/w6ufconstant 50 N/m and set into simple harmonia*9z/f;wg6wuqz x )gs c motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free ena kknl7uk-,8;e f vic0ecpj: -d of an ideal spring of spring constant 20.0 N/m with -7:ka8-vu cnp i;ljk f,e0kecan amplitude of 0.250 m. What is the maximum kinetic energy of this vibrating mass?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of a mass-and-spring systi 6dbxptf 9 n gx)-c7)u3j6oevoqv93 k7w; wjdem is displaced 10 cm from its equilibrium position and released. A frequenw9x9-ubg )6;d6iontovx k fvj7c 3p7ew)d3jqcy of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of s w9py c.c;t6vt y/h0qopring constant 10 N/m. The object is displacy.q 6ot0;whv c9yc/t ped by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a sprini2orqelapjc;,f1*8 a 3 uvmf.g of spring constant 10 N/m. The object is displaced byc ,q8ao1vam.3; u jp2rf*eil f
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is hungcg ez2*g 8z/dh from a spring of spring constant 18 N/m, displaced slightly from its equilibrium position, and g8/d hz*ce2zgreleased. What is the frequency of its vibration?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillates at 4zap+r7 zvwuo x97x5ca frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the +7 c9u7o x45vrzpawzxmass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, hz zv, azn4e0o547 dk4xk; gww* fsb2rare attached to different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency ofbr f2g 4ww05,4x k d4;zn7ehk zv*zosa 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a si-hjmcizmb6n ( u* x /y/sf:j4pring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate thijz/ :(6 us-mh i*/ 4bycfxmnje period of oscillation.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the-wqs,- ftq9sx mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the 9 --xwfq,t ssqtotal energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspe 8nm:8q.:uxziwex* zr9y9 h-yigt7 xsk5d+ednded on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down anyn.r-x 7ty9 q+zwikezmd8:h*eu:s9 d g8x5ix d released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the following position v2s u+ fedgc8ne8h m:y,o0oi0y-p;egkersus time equatieyimoh u8- pksdeo 20y0g; eg8,:n+cfon:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the amplitude of vibration?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the following position n,)td n)tz 6mamt;5 rfversus time equ;,f5 z)ttd6t)manmr n ation:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the period of vibration?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motio7je 13dm 0tor*feew eotm06m;n obeys the following position versus time equawmfe67t3*0 omd t j1o ee0me;rtion:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the maximum speed of the object?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass attached to the free endw .e2lq i0;4kwb00z)mc snbjm of a spring executes simple harmonic motion according to th 2qz0bl40 mw cews)bk.;0i jmne equation $y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

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74#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A 1.5-kg mass attached to spring with a forcec gua(tjwca9qn2 )zz8x d60*q constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, tac z wnuq28d(t9a0xj6 gz)c*qhe spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings in 8.0 s. (a) What are its frequency8j,ygg) uix p9 and period , yuj8g)pxg9ion Earth?

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m long. What is its period ohi+db5 fxt imsk6 79 /bcoa89;mju9fwn Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Earth. What is its 4 v ;mi d5z1+ogld.fxclength?

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather clock is 1.0 m ezs5uft7k f.0e ok 1s(long. What is its period on the Eartf fszkkt0s1. 7o 5uee(h?

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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfa glcw3do v;4+09gn1b5avqxe-b uh 0i9z pshb1 ther clock is 1.0 m long. What is its period on the Moon where the acceler0xb +bc1 gz-3;iqhsogvepn dwh 1bu0l a49v95ation due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.25-kg spherxc*ov2h:aoa( oflf4,oo 4 0kcical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pen ao o,v2kcf0ao*cfxo:4 l( 4hodulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initp; j./k85rm p6nw,hspwp t2dhial angular displacement of pkn s;/ rpwp258.jtwmd6h hp , 8.0e. It oscillates with a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot"rk0z,r3h xu+t of a wave at a given time. The frequency of the wave is 120 Hz. What is tht 3z,rkr0hx+u e amplitude?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The freq1/gq* *+nqqwa br 8w t)ojr-tvuency of the wave is t* )qa1r q8obr-n/*gj qwtv+ w120 Hz. What is the wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequens 7nl66e,6lw :qjurb ccy of the wave is 120 Hz. What is 7,ue6 cwlb:r nql j6s6the wave speed?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a wave which has a period of 6 vcfn:ov8+z fal;mi8 6.00 ms?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the period of a wave with a freqxqw/od7f 2 cfi +/en)ruency of 1500 Hz?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wave speed if a wave has a 5a shgsb8h1f q0*f/w(4wvwjh frequency of 12 Hz and a wavelength of 3.0/*4wwhg h8f15 swq hba 0svjf( m?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the velocity of a wave that has a wavelength of ec5,s (g;oopealxk9 ; 3.0 m and a frequency of gs 5e;p(ako,lex ;c9o 12 Hz?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequence6i smztd w/0)y of a 2.5 m wave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/m is underf7b7n,q6 k m5q+guqyg a tension of 1350 N. W q 6u77,qnb y+f5kmggqhat is the wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear denskig6 / (,hgomn x;m/rlity 6.0 g/m is under a tension of 180 N. What is the velocity of propagation of transverse waves aloni (ggm;/rl n/h, x6omkg the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m is traveling dowi y2hd:/j4 1zvol3rieq eqk81 hu+up3n a 500 m long wire whose total mass vd o 2kye/l phze+uur4qij1qi83h 3 :1is
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagation of a transverse wave on a 2.0-m long stringzz t7xje 0cl0 dwd9+jbs3/m0q fixed at both ends iswd0x3bs / z z90ec7jt j0+dmlq 200 m/s. Which one of the following is not a resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a f p m xyn+a4ajln d8t4:m 2trfnw-z+:9awx0 k/fundamental frequency of 500 Hz, which one of the following frequen+fznaard +8na t 4/w:l 9mnxx0mt -2w p:4kjfycies can set the string into resonant vibration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string is observed to have four equal segments in a standing wave p -pfm8yp7 )t4ubt+b edriven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five 7pf8- mpttbepby4 u+) equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrate(2 yhgkas,) e-n1srszs at a frequency of 12 Hz with a standing transverse wave pat)-ns gz, y(ash2rk 1estern containing 3 loops. What frequency is needed if the standing wave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density +t,x ekt:+zqi 1.5 g/m is under a tension of 20 N. What should its length be if its fundamental resonance frei+e:ttx ,zq +kquency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string f )8zec pj03diof linear mass density 2.00 g/m and length 0.600 m when it is subjectif0z 3j8 )dcpeed to tension of 50.0 N.

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99#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A string of length 2.5 m is fixed at both ends. When the string vibrates atl) * jxkyi.)eu a frequency of 85 Hz, a standing wave with five loops is forme uyij. ))klex*d.
(a) Determine the distance between two adjacent nodes.
(b) Determine the wavelength of the waves that travel on the string.
(c) Determine the velocity of waves.
(d) Determine the fundamental frequency of this string.
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