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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 uk0x4.mrqn v;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 numb:nhn e 5g74poy* ahucshcq v:de7.u76er of cycles per 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 equic; po)m1cx : yk,mvbz4librium point is callz,k x)m;:4 cv mbocy1ped 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 unde mgf2 x61l.us +f,pl6:a4r kfyuelq7w/igi+j rgoes SHM. When the mass is at its maximum displacement from equilibrimg+ f764ui/+:fe ,lyw 1.j6xkra lu2pfqs lig um, its 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 pas:;cbwn /yhe cowf8-,nud +fm7ses through the equilibrium position,fe: m;c bf 8yw7-wounhc,/+n d its instantaneous velocity

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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 mass is at ma*e; tbh6svgnsig6+7 / 7qei qkximum displacement from equilibrium, its instantaneous7e ;h+n sqeq itvs6g67igb/ *k 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 verticalra c0a3s ; gn:s54vnex spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a minim4ar;e3 snsn xv0: cag5um?

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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 a vertical spring (*bp; azc-g s 7vf1hc:ybk;geand bobs up and down between points A and B. Where is the mass *g:y 7svzp ;efc1(bhc-kbag;located when its 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 sprinvv8 a k jz.of.e9zys6;g and bobs up and down between points A and B. Where is the mass located when its ps6za ek.8 vfo.yz 9;jvotential 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 bobs up and down betwefs rsgy4+u e34en points A and B. Where is the mass located whegu +4 fes34syrn 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 amplitude of a vibrating mass-and-spring system rl ow9fq bk300produces what effect on t3ow qkrf009 blhe system's mechanical energy?

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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-spring system produ*ag7 c)a p6,x +dcc shj6xjck8ces what effect on the sys axak,j xs8pc6hc)cd6*c jg7+tem's 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 constant of a vibr6n94 m8bf:kvyov/mn*+nlofs ating mass-and-spring system produces what effect 8nnf6b ym+: l4kno so9v/mfv*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 ongx jxi;r,:x6a the end of a spring, both on Earth and on the Moon. Where is the period the greatest?xa6:xj,g r;ix

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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 k of a mass-and-sp 8 iu:/1bzfvxqring system causes what kind of change in the resonant frequency of the system? (Assume no change 8f zx1 b/uqv:iin the 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-spring system causes what kind of change qs-t9 v e:e j22qbatc2in the resonant frequency of the system? (Assume no change in theq2 s9 :b2e-2ttj qevac 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 of a mass-and-spring system caxyz 0svh4h h8(xw 62so2frf+guses what kind of change in the resonant frequency of the system? (Assume no other changes in the system.)hx+ o42 yfsr0z shf2vh8gxw(6

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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 mass M attached to a weightless 98qge4y+ g xv5wmmg8y ta48bixtec2 , string of length L. For this system, when undergoing small oscil xam 88y,ggm4x 4q 2eby9 +8tv5iegtcwlations

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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 chx z21ul)so8time required for one complete vibration2hl8 xs)uzc 1o

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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 t5-00r drkwcwhl fm;2 of A is T. Pendulum A is twice as heavy as pendulum B. Wha50;hwrtc0 lm r2wfk-dt 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 penkb zgvrx. 9f ,zx k3q+2+ymqh6dulum is tripled, the time for one complete vibration incremy+ 2h3g,b f.v zr6kxqzkq x+9ases 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 fdqwtz wz+j 1.fcks m0j; (ge34requency if both its length and mass are increasqd4 ez 3wjz(.m kct0f;gs+j1wed?

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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 atb +z ;fs(lxne0aq :ws+ twice the frequency of simple pendulum B. Which statem+nzsx0e+;:w lsa qfb( ent is correct?

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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 to the Moon, where the acceleration of gravity ia.hp87m /9 /lpexoeto g.qoj0s less than on Earth, the resonant frequencyjphqgxemo 7po. ./90ate/ol 8 of the pendulum 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. 11-1bfw n;6:3iavl represents


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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 hshxecev(95 wwp / 35brepresents


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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 represe+bdt u05wn6d (p0lgt bnts


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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,4; wy+tusw db0c,.nu m the amplitude of vibration 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 displacement of points o 2,of,kdoh0-*ostfv cf the wave from equilibrium is called h-fotk2 ,,vod0ocf*s 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 wkfy i5 .t1u6msuccessive 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 wave passing a point per unit time dqxweoq :2j (kcl 36rduq9/ q,is called the wave'(u9, qrx6qk3cwqd dl/:qj oe 2s

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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 wavel7n qb:vgnp*+x:l 01pr1-bl jjx)foae ength is the wave'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 h:mb l6ka- nk5oappens to the distance between successive cresnabm5l kk6- o:ts if the speed 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 string with wavelength l and frequency f. A second wygddm. 58k6v)lydbza* ; x g3vc/m3 iuave on the same string has wavelength 2l and travels with the same velovabd 6mg uk l .z85;3xdic)gm y*yvd3/city. 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 orpw7id7oor;9;c8 ;go6rwbtwave on a string of length L, mass M, and tension T. A standing wave is setr;ic7p 7 ;b8w96o oo;grr wtdo up. Which 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 tension3qgun2 x/:q,mu d5 irw T. The speed of a wave in the string is v. What will be the /d iq, :uwxuqgr325m nspeed of a wave in the string if the mass of the 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 tengtk zy-1n3)) )2rmx0,seg uyc f+vgjc sion T. The speed of a wave in the string is v. What will be the speed of a wave in tcxj32c)s z0y-ftumgy k)1gg n ev,r)+he 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. Thv .fhfj 93 ln-aaax:6se speed of a wave in the string is v. What will be the speed nhflvaa:xj3 .-6fa9 sof a wave in the string 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 wave. As an S wave+h/uf;:jz+ q8dk plq 7ice1zw travels through the Earth, the relative motion between the S wave and th k8lzd+cui;/f q e:h7+zjqpw 1e 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 travez : +h3gqlc9dyls through the Earth, the relative motion betwedh3:qy9lg c z+en the P wave 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 wave io uyk : j*e.*l6;mgwess

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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 v1:n1es*zc6uh m r.gbpb 1;wdto the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses1zc*vgbedn b.p11:m6hw s; ru?

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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 string, ip 8 dv96d, e5ontkyk-yq7aq(one is traveling toward the right and the other toward the left. At the point that they occupy the same region of space at the kaqoi dn6y7q,58ke9vt(ypd -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 each otherx6();5tqjcm :c,- bwyci voj i 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 thi:b6ow -vi 5myq,(jcc;)xtcje point that they occupy 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 string fixed at both ends,kx0ui 4hf9w4 lqr(8 ux 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 tension in a violin string, the k7x9c((g boc pfundamental frequency of that stp7xc( kc go9(bring 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 constant of a spring that stretches 2.001cjo*;ocw 7iu cm when a mass of 0.600 kg is suspende;1u o j7cc*iowd 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 spring constant 60 N/m ab r 9v-c;0qhkq:tth(,lc.8e f 0scxyylong a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. tcxh ksv:0(-l;0ceq,ch .ryq8 yb ft9It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What 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 constant 60 N/m along a horizontal,f8 d ej1r1ur-e)en*uj/ltkpe2 zh*j, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and letd/jle12-nk1 r)* trjhze ju 8ee,pf *u go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is 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 a horizbe+w3,xv b r;hl:fg6 o)wt vq :kyi(g0ontal, 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 is the frequencyhvqgi(:3 wrex;0b, ktflg6wy) ov+:b 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 x+q9qb6dhf8 qoscillations in 5.0 s. What is the pe+hq68xdb qq 9friod?

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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 iemc-pl.p) c h.deal spring of spring constant 20 N/m with an amplitude of 0.30 m. Wha..phc)- elp cmt 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 of mxm2p66kpy0owh x m)f0 zd/n 1spring 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. What is the total energy o0x/opx60 6y mhnwk p1mdm 2)fzf 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 ampliturj4z 9ndt:bl1j3ri4 xde of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is td jzx3r 1njtli:44 r9bhe 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 attachea:tchr qin 43f+.xx9/y-jtkz d to a spring of 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. What is the amplitude oqyhxz:k n/-ir9jt34. c ftax+ f 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 attached to a spring of spring constant 20 N/m along a hordgh -:l -v+jh:osq;qg-wg4zfizontal, frictionless surface. 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 potent--g:l+q gohwvdz ;qjg 4 :sf-hial 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 spr /g)q;th ewd 6+,uxc4ddp v+jning of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the d+,pegdx wvh4 )dn ;tju +q/6ctotal mechanical 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 horizo10zxyu:l : aj0wj k*urntal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this systxjluyw*ku1: :zjr 0a0em?

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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 n(- ntbf;ka; vend of an ideal spring of spring constant 20.0 N/m winn;b (;-f vtkath an 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 system is displaced 10 cm from its eqex g2pqa2m/ w5 vcp( ppb.+ky*uilibrium position and released. A frequency of 4.0 Hz vw5bp 2px+mayk /pc2 p(qge.* 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/1wi4m-iuw90uw r 3p mlj6qru spring of spring constant 10 N/m. The object is displaced by-qwi6 ujr w4r9u 3l1im 0pmw/u
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 toy04fsw 2w zjoz, -gon )+ggh4h a spring of spring constant 10 N/m. The object is displacyshf2g +)4n-04wzwg ozoghj, ed by
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 hung fr: mh,ky vu9k2som a spring of spring constant 18 N/m, displaced slightly from its equilibrium position, and releasyv9 hsmk:,u2ked. 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 toq. tgy4o- 8bct a spring. It oscillates at a frequency of 1.27 Hz when displt o8.tgqy-c 4baced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the mass?

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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, are attached to differe zl,41i0 /wppz oerwz,nt 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 of 16 Hz. How does the maximum speed of A compare to the meprwowliz 4 0/,zz,1 paximum 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 spring. In equixl(p:k9f +zxv k w:2gslibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional(2k9xfkgxzvs + :p:wl distance of 1.0 cm down and released from rest. Calculate the 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 equif,g0u lr8smz7h 7; yeulibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additio7g0y 7,um; e8u zlfsrhnal distance of 1.0 cm down and released from rest. Calculate the total 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 suspended on a spring. In equilibrium the mass stretchesv;dna uy8d,fdi 3.p n1llkzm-)yp,y4 the spring 2.0 cm downward. The mass is then pulled an additio.yp v3;i1 dld,mypulknf)y n- 84da, znal distance of 1.0 cm down and 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 versus ti9kkq6 u,mvlto b6*oe8me equakb *mt qk8v69ooe ,lu6tion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 positionq x q/jbsrbec :)m;3a, versus time equati)q:a,bj 3sr ec ;q/mbxon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motion obeys the following posit 2 ecz,)sx)-yrv a lz(0f +ueak:0bfjfion versus time equatio:cvjsf2a0 ) f,) zk(xfb- aze0+ ulryen:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 end of a spring execobn*/n*frr yt t;:*r;orn 0wm utes simple harmonic motion according tow; t*f: r*yr;rtnbo0nr n/*m o the 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 force constant of 20.0 N/m oscillatesj8fu9tg2ty 4kp, bovt /b.ej5 on a horizontal, frictionless track. At t= 0, the mass ,u e52o pbk fyt.g/tj9v4b8tj is released from rest at x= 10.0 cm. (That is, the 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 a+z z 5wlu9.irere its frequency and periorwz5 9i zlu.e+d on 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 )xlk qm6*)yfdlp4l 0eits period on 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 i7qbj6i ,ctd.qgh23y+uj nvs :ts length?

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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 long. What is its period t/7kipsj t).l,l b*y wjmz)f( on the Earthm),zsjtk /(*7j b).iflpy tlw?

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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 grandfato quw7u( 3ti9 t-i ifl516-yz)zxncbo her clock is 1.0 m long. What is its period on the Moonyii- o-53lu(nwtz)1q c 6x uitzf7 b9o where the acceleration 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 spl e( gzpu/b*l: 0oqj9:gu4n-wg6vy xfherical mass attached to a massless string. When the mass is displaced 9/zvgy:olwu* lgxgqnu(:6-fb j 0pe4slightly from its equilibrium position and released, the pendulum 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 initia*, kh+8xe-b va7swjqv,rqvje1wb 1t .l angular displacement of 8.0e. It oscilla q bxr.ve we17j,j8vs-*a1 ,bqwhkvt+tes 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" of a wave at a given time. The frcafjn+9uqnqop:f;e;s* 9a c 6equency of the wave is 120 Hz. What 9c6uc9seq*;:f anfpja+o ;q nis the 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"u d g(2 7:)it 69dolre:vo* og*jazfmx of a wave at a given time. The frequency of the wave ix7l*r2:ugjt g 9)odve(z6 : o* afmoids 120 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 frequencyp2 7yhpjs2j 8i of the wave is8j 2phiyspj72 120 Hz. What is the 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 wixt)we 2;hw)p 7,5vje o51vpe zv :wruave which has a period of 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 fru0sitr)*lrs:a6 2kz4sw62q2e a onukequency 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 frequgd3(w7 lpo e3gxhr11wency of 12 Hz and a wavelength of 3.0 gw(l1 wgd3re7ox1hp3m?

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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 c b8*w4iopro7,y3h ;x+ szr bythat has a wavelength of 3.0 m and a frequency of 12 Hzcr3ob*x,b 7y z +p8ih;ows4ry?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a 2.5 m wave tradwp 1r33r dfg1veling 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 lineai)d,caadia p(b8 r2q,r mass density 0.0050 kg/m is under a tension of 1350 N. Wh ad) ,ic q2aip8db(ar,at 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 density 6.0 g/m is unx6zz,2q0b cx qder a tension of 180 N. What is the velocity of propagation of transverse waves along the,6z2 qzxbq0xc 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 down a 500 my32v m3-(qd x-(.lh aq e0fdqphkkfx) long wire whose total max- mq ( dhq)k(ekx.y0v pdf-3a fhq32lss is
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 ais)z z9ws8 d fy,fbhsp .p5u-. transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is noip- s, 9s pzf)8yuh .dzfb.sw5t 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 fundamental p-- kpa2t- qtvfrequency of 500 Hz, which one of the following frequencies can set the string into resonant at pq--k-2pvt 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 equalcds w0 k(v ;k6kja)qlf36,xfx segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with fivxk;f)f lq x3s0(vk 66,dacj kwe 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, vibrates at a frequency of 18t t.e,g:)vwft lg5 te2 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standf tv:tel8 tg.,t)g5ewing 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 1.5 g/m is underz-is:hev +0 jg a tension of 20 N. What should its length be if its fundamental resonance frequency is v-se+jg :zih0 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 of linear mass density 2.00xqa2( 6sm)fj g g/m and length 0.600 m when it is subjec (a)jg2fm6sqx ted 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 vibrate ky 0ftj/-icf*s at a frequency of 85 Hz, a standing wave with fivecjifk* -ft/y0 loops is formed.
(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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