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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 periodic process is e6bpn gx h494mtk6y,vvx xe 54called 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 per unit timenel mprz+(ro9 c*lepns17;/m 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 fe6kh/p)gqkq4 *lxo9urom the equilibrium point is cale qug/46qo lp)k9kx h*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 mass1qt*dwy d90 q x:::xuavq )afd z9ker; is at its maximum displacement from equilibrium, its instd0z9 x v19f;)rakua: wqt: q:xdq*dye antaneous 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 7ha8b /zu8ku v.5s ytmthe mass passes through the equilibrium position, its instantanesb k7/umu8hv8zat 5. yous 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 massy kdt (;f +rb4a,o:rym is at maximum displacement from equilibrium, its instantaneous acceloy y+brt:,d4 r; (fmakeration

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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 bobs up and down between p x;f4nx(vd.bmoints A and B. Where is the mass located when its kinetic en4.bdmxxn ( v;fergy 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 a vertical sprinrlq 9i ,fq(.opg and bobs up and down between points A and B. Where is the mass located when its kinolq.9f piq, (retic 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 between9loo40at; (md;pha n4nx(ott9f xp0n points A and B. Where is the mass lxn9apt049x0(mn fot4nol( at;hd o; pocated when its potential 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 between points A :t)uu-s+spntl+ph 9mand B. Where is the mass located when its potential energy is a stp: h)9+nu sp-mutl +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-ayfma tw;re90, nd-spring system produces what effect on the system's mechanicafe;,a mtr9w y0l 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 vibratijam10. ol jioo*ft 72rwgw(m3ng mass-and-spring system produces what effeco.i3wm 7*wfjo tjga2ol01 mr( t on the system'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 bx (q dr3e38bk p3:gjfconstant of a vibrating mass-and-spring system produces whatbkdfq 3gx( prj83e:3b 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 ontts )+k dry02l the end of a spring, both on Earth and on the Moon. Where is the period )+rt0t2k sldythe greatest?

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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-spring sys8 p(gx.nb*wm,;kmky dtem causes what kind of change in the resonant frequency of the system? (Assume no change in the system'sg dn8. (mmk,kp y;*bwx 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 M3b7wgg1 g b 4c3:0 pxsjkdijho2lm94 h of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the sjlbog1gm40 92ikbpwx3 c4dh7j3ghs:ystem'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 causes what kind,-d u, 9 usiz/,xs*rcym9mhae of change in the resonant frequency of the system? (Assume no other changes c9* h-,9dmuyaeus, /im zsxr,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 mass M attached yg+ h.zd0 +xgpto a weightless string of length L. For this system, when undergoing small osc g.zp+hy+ dg0xillations

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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,jrw 14tca(ch 9 8tbsn time required for one complete vibrawj1trhb9t48( s,c cn ation

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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 izy +(u 1 s9bo87g,dy8fv frwqws T. Pendulum A is twice as heavy as pendulum B. What is the s9wu7 yfq v81o8fbwdgy ,rz(+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 pendulum is tripled, the time for onokd1jo x:/ngqx 4p:7 le complete vibration increases by aj:l g xx :/7kqo1d4onp 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 frequency if both its length and mass0xovh( js tx+9mp-hy g8k6qm( are increasp0(+jh(vgx6hmot -q8ykm x s9ed?

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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 sis bpb b012evdrm3e31smple pendulum B.3psdeb2mvs 13eb rb10 Which statement 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 penbtx4 wi7z knsm,r s69 k1q*)iddulum to the Moon, where the acceleration of gravity is less tnw1tsk imb*)r dx,s4k7 q96zihan on Earth, the resonant frequency 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. 11-1 re 6 w8lckhu*k4rpresents


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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 represen8q9x3u qid qq5ts


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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 r(*e(t fdpjc.zaar3mgk6 r: sr+m q0 g2qi42fqepresents


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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 vibratiyqwk4wfp.: ( hon 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 of the wa72 bxz qv(r; (fha7gsave from equilibrium is calle;2 zg 7(xf a(ahb7sqrvd 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 successive crests on a wave is calledtxish qs3 4w,pu w1h4355ngfu 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 fvg t2c )ph-n-unit time is called the wave'g- cfn-)thv2p s

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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 isd6sbmf x3k 5676 nzzzj 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 h9n: 1w4pena.;s z dhkk*bfm u6appens to the distance between successive cresh b: 614kfw*p9 znnams ek.ud;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 strin e,k 5n4k+:lqaylj+iun-m px 3g with wavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. Wh:+,+a ikulq jm34x-ynn5 kl peat 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 /w z)gtci5t*bseeb8x h r9+lrvrji(64 h0h9 q L, mass M, and tension T. A standing wave ir ec(+x*g0i8s 9r4 vjrwb qe5h6l bz/hh9t t)is set 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 lengtob *th2q4uy)ns5d o/ nq 1rcf,h L is under tension T. The speed of a wave in the scq /,tf4nyrqod )so1nb* 5hu2tring is v. What will be the speed 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 tension T. The s-c9g 57i*sc3iahd 4o;m die hupeed of a wave in the string is v. What will be the speed of a wave in the string if the length is inc9 as5e *ocgi4umidc;hi7hd3- reased 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 vfc cqd-w 5ttr i ;+9vvd8c:s,T. The speed of a wave in the string is v. What will be td ccv8vs:r;-+diq9tfc vwt5 ,he speed of 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 transod vy 7fq.c rfg:dvk2n j0u,8/verse wave. As an S wave travels through the Earth, the relative motion between the S v vg.cf0 dro/:j qu f8,dn7k2ywave 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 g5o5n6loikjqe- f +lm3l 7br3 a P wave travels through the Earth, the relo 3jr-n+g qfie5 blo 37l5kml6ative motion between 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 wavzp 8e,52jtq6 ao0 yisfe 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 rwx9jdx3uv (hxj/p3 ogk4y. y8gn/ ul9ight along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected an 8yyk dgp9jx3o/gn h x3 vwlu9/u4(.xjd 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,f,( b6 ;ca.s-bdlw+ hlxwrnw string, one is traveling toward the rrww,,l+(wac .blsd - xb6f; nhight and the other toward the left. At the point that they occupy the same region 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 each other on a string. The one travelinghd3ebzt ./w:y toward the right has a positive amplitude, while yd/3zbh e.wt:the one traveling toward the left has an equal amplitude in the negative direction. At the 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 fdaq;9eje/tq0fg6 ozw. z u :x3ixed 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 tension in a violin string, the fundamental 2wy9v5 smhc7y frequency of that string will increase by 72sywy mv9c h5a 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 stretch,2t,ahr* ti m znw8o*s9cwzh 4es 2.00 cm when a mass of 0.600 kg is suspended from it?mz 9sh t2wcai o*,znw*tr4h,8

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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/k vk*wktrg4 . 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 tokkt r4wv/ g.k* 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 horize.*. z+sysm xnontal, 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 x+e.* ynss.mz.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 eri4) etkr 78qhorizontal, frictioq te )ie748krrnless 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 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 Sylne1 1 2ypqw-HM. It goes through 10 complete oscillations in 5.0 s. nwy1ql 2pey1- 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 of1iplz a3*qb6n an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vib1l3zpqn*6 iabrating 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 /h1. k dszw73ptchw99ei8zz lof spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion anh ik8ewt zc/z 71.sl93z9dp hwd has a speed of 1.5 m/s at the equilibrium position. What 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 7xc20p y+eco173 f r )nmbu0)xxmlm yucm. 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 the energy of the sy7+7r m)lb)efxx0 0opynxy21 uc u3mcm stem 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 spring of15a,qr6o-0gictyn se spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in gs-c0o ,i 5rqt1y6aen simple harmonic motion and has a speed 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 attached to a spring of spring a6k;l1dz x(j2;w ey 7 qfvqo*gconstant 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 equilibri kex2*ag(wvq6 lqo 1dfjy ;z7;um 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 spring consta*.b) 8zvcgwi j ls8t7cnt 50 N/m and set into simple harmonic motion with an amplit8tl)s izj8.*b cgv 7wcude of 0.10 m. What is the total 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 enia8o 8x6 mc+u5. bzpead of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the totmo.b6 ipu5az8+8c aexal 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 andrtjomh5 q+q8g9f ,:z 9ty;avan0d .tg forth from the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is th a+8tg:. zqvy5a t;f9ohnmj q9,0drtge 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 displac dz0hy3t0x kp0ed 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be obtx dk30z yph00served 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 spring constant 10 N/m.j ,b:s o;w 7 vabdkq nq5szmv;67f6 7dlja:ub+ The object is dispv7wz;:u7d an765 +v :dqj ja,klssb oqbfbm;6laced 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 attp46y/ ywms o3gzq/d 40f51hgzp feb.aached to a spring of spring constant 10 N/m. The object is displaceqggp 5/ ya of4byphe6w.fd1/z0s m3z4d 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 fro46 f+n 5krvlglm a spring of spring constant 18 N/m, displaced slightly from its equilibrium positi5llr6fnv4 kg+on, and released. 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 a frequen )w( s:qaqs 9c9fsdhw.3cfbv0 cy of 1.27 Hz when displaced a distance)w3savfqs9(cs.ch:bd0 wf 9q 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 different 9cbmc a60d8yjrh jr*- lhi ,i)springs. Mass A vibrates with amplitude of 8.0 ca 8-6h,0 mycib *hj)i ldrjr9cm 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 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 sp57w8d*kak82 wxu rzjg ;( vegjring. 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. 7d e *r akw8(xwk;8gjz2gvj5uCalculate 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. esn b6v+8:qqakf/ir+ mv4w:mIn equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm downwvfb4:avmki q e:+ /8mr6+ qns 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 )(nb ch8l+i5cpr(3cs36f yc myayau5 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. Writea 6 5s fhuaccymnr(83+ c5icypyb(3)l 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 time e8pxeh7pvj0uu ticy8f5 a(0q 3.r:9hsx iyo v9 quation: 5o :heyqi9sxyji7( 083cvpxafuv0 9 thrp.8u
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 vers-,hs o2;x yekw)p 8iaous time equatiohxpso -,iwa) 8eko; y2n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 posit2),mgbv+eh hb/v(tsirhw 59g n: *lr uion versus time equrrg )(v/ hnsiwegul *bt:92m bv5h+h,ation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 sp 0)s yhyrj9se:ring executes simple harmonic motion according t90rshs y:ye j)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 attachedpgl z* j+mdyuf34u, ao*a 0mp5fuq49h to spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionp 0j zuaqmugoplm4u3f 4d,y* +9a5fh*less track. At t= 0, the mass 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 swinoe*) actgf;nu(b r7d8hkj7 4ngs in 8.0 s. (a) What are its frequency and per74a*eguj k c 8fn)ob(h7d;rtniod 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 8k 4,iy2 .qrdee*dc /kwosyy1is its 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 it-tn uc5ds wz:kji-0 ;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 los22 dn-r4utd .j hlfp5ng. What is its period on the Ear2tf2 -45 jpdhdrsl.nuth?

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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 grandfather clock ispz9x vqs. zqivb-q.3 ,o.(ei rss- f:f 1.0 m long. What is its period on the Moon where the a.b9 s.fq-qs-rpi, x ze v:vo3q. zfis(cceleration 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 spherical mapzo/8)* lq)hybln/,f p:6zsxsht p2b ss attached to a massless string. When the mass is displaced slightly 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 aoyl6 lp*zshpz/2/hbb ts pf8: x, )n)q 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 initi+-a* g p oua(/k 8*jmd9jrhzcial angular displacement of (ro -+zj /hca dg 9kp*mijua*8 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" of a wave at a given time. The freque1fv7/lg t qj5w+ 3faozilg* - (u0rtw:qog-nbncy of the wave is 120 Hz. What is n:w7/ a(o1* fbrt3wl igg0 o gt-q-zu5q+lfvjthe 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 "snapsp 9-*1)9ng(n fa*zpolngt bxchot" of a wave at a given time. The frequency of the wave is 120 Hz. What lnotpa -*9b9gzp) xnc (f*ng1is 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 frqfk6zw esv9:np fr;1q6)chqt 4,8x nbequency of the wave is 120b);r kw6 ,h4vq:sqnxepc81f6z f qn9t 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 wave which has a period o(l)3eyzh*e 7ciqgyl vj. n9ynvt40w 5f 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 of6s w(:w)x6ns m i3abds a wave with a frequency 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 frequency of ml 9z;f- gb/e5yi w51ik-yz2ft gk r;f12 Hz and a wavelength of 3.0 m? gf5f ik lbzr/y 5ize-k2m w9f;-y1g;t

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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 wavelpskz+5ye -s l3ength of 3.0 m and a frequency of 12 Hz?lpz-sk ye35+s

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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 travvdyk 3xjl1r/:)nyb /ueling 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 under a tension of 1350 -2ngv grtc6pyw-h. jkw sz1))i/lvh 1N. What is the wave speed? j- zt1hgkpr/n2)6vv1lg s icwh) w-.y

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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 ius/pr .zi k3.qs under a tension of 180 N. What is the velocity of propagation of transverse waves i./.kq3zurp s along 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 down a 500 m long wire whose t cvn1xan8/v hr-s2 y3j mt /vhr5:p4muotal masv8v 1mha-n35rspmr y jvt:n /hc/4 xu2s 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 a transverse wave on a 2.0-m long string fo v uczjot 9q5p6n ;/trnp.31cixed at both ends is 200 m/s. Which one of the following is not a resonant frequency of this strino5oct;cj zq 3 t1/p6 9pun.vnrg?

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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 frequency of 500 Hz, which re n*a, eq+um-one of the following frequencies can set the sum e, a*+-erqntring 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 w wyqs 0z ,tyaqo t+2w*6c)5mwbave driven at a frequency of 480 Hz. What driving frequency will set up a standing wyw2m*wob c5,)t 6yqtzsqa 0w +ave with five 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 1-4, cogkobx9urxi- f +2 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to c cxxfou94gb--oik+,r ontain 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 under a teuq ga+) prlyr8 )ju yx6 9x.q:8l0eytsnsion of 20 N. What should its length be rjy0s)+xpt:y6qry x.eug l88ql9 ua )if its fundamental resonance frequency 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 agjmi *86kw0xd string of linear mass density 2.00 g/m and length 0.600 m whk g0 6*w8mijxden it is subjected 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 *6lwzh s8yi dpi1kb5 ni)h(*lstring vibrates at a frequency of 85 Hz, a standing wave with dziil1*i56 *p8l ybk whnh)s( five 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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