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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 1fjmt/u 3 a 3./mgec0a ovso5pis 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 per unit timp1yum6pub vo e;g/g+y k,/ y4ge 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 motimr72/t)r uatv5tx7wcon, the maximum displacement from the equilibrium point is called thew/ m7rcta)tu7 5t rvx2

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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 maximu bvw2p h6nx; v(qho,t,+7wyfxm displacement from equilibrium, its instantaneoo(6+vp2qfwh,w; ,t xx7b vny hus 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 passere 0iq+ mx.eeurp7b/fths ;5z17j)ed s through the equilibrium position, its instrjx ;fr/s 750pe.bqz t1eu +d em)hi7eantaneous 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. Whep 3q,5oshcrors28unvq2g 34f n the mass is at maximum displacement from equilibrium, its instantaneous accrs3p,3 42c uovq8oqg5fnr hs2 eleration

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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 bsg d miqr; j0/v3f:uzx)u4l:qetween points A and f m4 : 3uijxgzl0/;uqrdv s):qB. 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 a vertical spring and bobs up and down between points pzpc,s8y+ /f61owk fhA and B. Where is the mass located when its kinetywsk/1+ czf h,f6opp8ic 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 ykk-yp*g5o .iu /5 e9cd,pfeca vertical spring and bobs up and down between points A and B. Where is the mass located when its potential eycf/5i,* 9kypep5 -uod e.k gcnergy 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 poin e odm*tsj717cts A and B. Where is the mass located when its potential energy je cm7sd*to17 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 z-jxuk 24sgl)n / cg+wmass-and-spring system produces what effect on the sy+jgz/s)u w4 l2xn- kcgstem'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 mat( tv qz ;.h;:.usblulss of a vibrating mass-and-spring system produces what effect on the system's mechanicst; :ulhztq (. bvl;u.al 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 (mag f 7r(:.nou4 ljw( yecwg(vibrating mass-and-spring system produces what ef(r:g.olm yeawcwu(f4j7 ( ng( fect 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 Earth and on the Moon. Wherehdm+- 3y*7b sxm anoe5 is the period the great3da+ m*7bysxhn5 meo-est?

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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 ssz .lut0s ymq:v7j,/ jystem causes what kind of change in the resonant frequency of the system? (Assume no change qu:v/.zj7j tlmsy ,s 0in 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 k75ohur 7rce* kind of change in the resonant frequency of the sys 7r75hcok* eurtem? (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 ampliteklar c -m/pafg:(26 zude of a mass-and-spring system causes what kind of change in the resonant frequency of the systerkl(zc 2 a/eamfp :g-6m? (Assume no 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 convg e wuu5hc.r.b d:mis:)2yr-sists of a mass M attached to a weightless string of length L. For this sys: ud:y s.-rwhcv) eb25i.mrg utem, when undergoing 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 pendulh4ux86vcy lz 6 mzga/4um is tripled, the time required for one complete4a6z hy84x gulvcz/m6 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. Thev. napzmk*7r , period of A is T. Pendulum A is twice as heavy as pendulum B. kv,znp*.am r7What 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 pendulum is tripled, the time for one complete vihk 2 xqlb6pg20bration increases by2qgb p xhk0l62 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'se*jwddpjiu77 4i7z ;s frequency if both its length and mass are inui7d4e7wspz*; di j j7creased?

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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 45- hkporkp5)pd6t 5byerif0 twice the frequency of simple pendulum B. Which statement ) 5pypdft5ekrh4i6 p-b r50okis 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 grgaz kte1 3h,n,/cmd0bzbbo.79r fy r0 7ivyx0avity is less than on Earth, the resonant frequency ,0mnydar kg.0zv9t 7i0b /37brechz1 , oxbyfof 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 represents9k(ijjqcbu:h xd /0lh :yv ).h


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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 reprea6mt o wpj833usents


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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 represenhp8xnjjl 6cebxod c a1.nli j71,5*p)ts


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibratioa*ij 9 q:yal(cn, 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 of the wave from equilibrium is ca+ov*knx0 gf03t 9vrbmlled gk3xm tf 0n9orbv0 +*vthe 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 called the wu57(puh d7gloave'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 h+c fpmf7.1kjper unit time is called the wave's1k 7mf.jhfc+ p

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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 tim+;tbdm1 v5ovh vx*5unc0jf( ges the wavelength 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 happen i2eu1450ct vj4rd jp:n0es wvir4m5jf u:x 3rs to the distance between successive crests if the sper jrux5e44 uf30tj: : s5djw v14ricn0e2mipv ed 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 witdc(w-o+u gph ;h wavelength l and frequency f. A second wave on the same string has wavelengtg-uh+;(wp c odh 2l and travels 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 stri9cgd*ym.2q9xxh jv 70pr)cmv ng of length L, mass M, and tension T. A standing wavep0d 9c 2cmhg rqy7 )9v.xj*vxm 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 length L ikn t 62 j3w *e 6wkgcc.edf6i6-tv9qles under tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if 6iq6c3 k 6 c-knj*.wwlt2de e tfv69gethe 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. The1 ht /(exl 6hapka6t/v*3tzog speed of a wave in the string is v. What will be the speed a e(oag6 */z1xv lttp6/3hkhtof 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 tensionnya2ov.0 m9u,ws*i m7 ppz.kr T. The speed of a wave in the string is v. What will be the speed of a wave inu2.w rz .is9kpvp7omy na,*0m 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 travels tyfq;8 i- tmvmmx zu5;7hrough the Earth, the relative motion between the S wave and the particles iym 7f -vm;x8tzqi;um 5s

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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. Asmld k7 v7o 2a0*ftsj8af7/ wup a P wave travels through the Earth, the rf/aklj2 do70*8p wmtu7s f7 avelative 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 wyf6 c,( i2 8fuwumv8j/mbb3eoave 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 along all 1: wvggsk.j /6ea 9r,:,woqpwzp +p thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orien9pr6v,qo,slzw k pw1:gj l +w/pea: .gtation 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 -l.vsh9 ikbkds/g8+ya8- vvn string, one is traveling toward the right and the other toward the left. At thv9 i+vl-kass.d/b8 v knh-8yge 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 traveliszko06u;x4 zj ng toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negatio jk6;s4zz ux0ve 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 fixed at both ends, occurs whef*go s6 4ncgwc.zy.g8 (z jn*fn

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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, e0,zoy+(;v; sgur6sfdd z-a rthe fundamental frequency of that string will incree syurgz6- adrd;s(z ,vf+ 0o;ase 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 co s5 w 6b7uxo8t::lqhcrnstant of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended frorxouw8q75h:c s bt :l6m 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 along a horizonwzz4 lkfyh xss*8d42qc 1 d3t6tal, frictionless surface. The spring is initially stretched lz3w24*qh1y c4tszd s 86 xkdfby 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 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 7/eagppi.y/q:+ln ys a spring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched bye/syyg.aip+n7 p:/ lq 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 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 horizontal, fk6y9ue:lsy ;((cj 6 dqh u0yphrictionless 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 isdhl;((j 9pu06s6 : uyecqyhyk 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 oscix1 ag4 yx369fyirm g1ellations in 5.0 s. What9g1xy3f6ry i e g1xma4 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 fda+e ct3xm*d- .kb s rtzo+3u7ree end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.3mc +u37 ttdr.e-3sbao x*zdk +0 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 spring constant 20 N/m along a ho, oksm9bbm3ij.xdap8h, 4* jnrizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 mdamj4x*b9nsmop83i.,bj hk , /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 cm. The energy 1905j blinl4+ucyoha 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 uio4aj +9 bnh cyl510lenergy 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 sprijtgs6.mh ( r(1z iwyn5wsf9w6ng 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 amplitudy6(srh(sziw. 95gww nj1f6t m e 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 spl9nj 2v flm13nring 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 pnn91 j3m 2vfllosition. 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 +twd jbe,:. bjof a horizontal spring of spring constant 50 N/m ,jb:wbj t+.de and set into simple harmonic motion with an amplitude 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 attacl rg6sa h,u,8ohed to the end 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 total mechanical ena6hu oslgr,,8ergy 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 bg homa-m,*8d the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetm h*d8m-aobg, ic 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 equi:yv;i v1a2ooh librium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced only 5.0 cm a:aiv1vo y 2ho;nd 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 conurw.t8 i),uf+l ir s6vstant 10 N/m. The object isv.srtwuri),fl+ u6 8i displaced 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 springm eu9tv7p(c9* rm/hh)lvx ed 8 of spring constant 10 N/m. The object is displaced b)/hu*rd tv(cme 9xv 8h79 plmey
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 from a spring of spring constant 18 N/m, displaced sij+uu-l xzi o2q8 5j +u,bee0plightly from its equilibrium position, and released. What is the frequency of its viqoexjbuz+i,u25u p 8l- +0je ibration?

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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 oscqpez8,tnf4 ml*tn0)m illates at a frequency of 1.27 Hz when displaced a distance*4m0n ,8tmfntz pqe) l 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 springs. Mpka..j2* cg o ozxgzto:9s.d8 ass 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 maximumz k8s 2coxt za.9..oo:gp jgd* 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 equilibrium the mass stretches the nlf 8l g4c2+gxspring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and 8xlf4nglgc +2 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 sprin w* n23hnhcahsrb czwk .1 6r,j677mehg. 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 the totalshr,7cchwehw 3mb 26zn61ah* .k7jrn 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 stretu;t.cyyfta/pvh 31m8 ches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equatyfmpu/ 8.v1ay ctht3;ion 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 v ite6/xx u0mu5ersus time equation:6i05 uu xxe/tm
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ve/ugip4x* y6 nf*b um*yrsus time equaf*y / g*64*ui munbpxytion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 fdux8c.n e. ,rtollowing position versus time equatdu8 ,net.r c.xion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 .kvf4h k2jqd2mc 65-dqy,bcvof a spring executes simple harmonic motion according to thk d5v6c bj,q-m hfd2cq4k2v y.e 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 osckxyd +37p w6+ bq7.7 tposarysillates on a horizontal, frictionless track. At t= 0, th7swyp+k3r7d obp6xsqy+t7. ae 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 swings in 8 nbu gst r-.j-*mnrh;*.0 s. (a) What are its frequency and penu*. ;rh- rgnsm-bj*triod 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 isx)la7.ew x5*gsm)qmo 28.84 m long. What is 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. g292q,k (pwinuwk8uw What is its 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 on the jce68tfo dz 7tj9/;gxu) lc4g Earth?f gx 6l/ 4d;t9 jgzot8ecuj)c7

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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 is 1.0 m long. What is its period on the Mcj ool9k;86, 5msnen0 ;pagh roon where the acao6 so8l5 ch;09 e mjpng;,nkrceleration 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 consisws7f :(cip r+zts of a 0.25-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and rele fzcp:s+w7r(i ased, 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 habdj -mx;2o9lps initial angular displacement of 8.0e. It oscillate-m9;doj plx b2s 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 frequency of 0vli1kp0x y 3ethe wave is 120 Hz. What is the axk 0pev10l y3implitude?


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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" ofzj b0ug u7+/g7 fha-kq a wave at a given time. The frequency of the wave is 120 Hz. Whau7q /j-bh z7+fu0 gkgat 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 givenz 8emst6o tg g.;7/smq time. The frequency of the wave is 120 Hz. What is the wave sp gosmtsqmet .;76z8g /eed?


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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( ko:w+- kk7o6xjixzt.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 wd5b4xd t 4dm 5f.6ycu t*gj5mdith 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 12 Hz and a wavelength of 3fr9prk * k s3 6k4,nqu1f2jbrv u2dbr8.0 bu194vs 3pkrkqd*j,frf rkr 2un86 b2m?

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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 wavhvo;w 5wc: is.hk33p ze that has a wavelength of 3.0 m and a frequency of 12 Hzwkz3v;hsc o3h5:. p iw?

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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 traveling at pj2 2**6ueo, 2jzvxxxowtac4o:v q 8a 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 tensldr l3:t: 0 sk.yb)pj .de.iqkion of 1350 N. What is the wak .b:):yqiled0 .3.pld jtk srve 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 under a tension of 180q wpje(5 cl2v3 N. What is the velocity of p3wevq lp5(2 jcropagation of transverse waves 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.r2zy +yaqne jp45 .vdssv:jf .:gr8 l;500 m is traveling down a 500 m long wire whose total masp .2jl :as;nj 8fz .sv+rve:yrqd5y4gs 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 h +uqp1n:hci*transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the q*1:+ncuihhp 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 ha9tkk (hopg.6 js a fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vi.tk6 j(9p oghkbration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string iska.8 p 7o .xargkkblm4v49ety-1g5ep observed to have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will se84-g otl m ba47ekveg yrk5ap.1xp.9kt up a standing wave 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 bti1ppr 2mrs,i5x5ng (oth ends, vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequencyi im,5 21px( srp5nrtg 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 1.5 g/m is under a tension of 20 N. Wcrg.)wx0(q ,z2g2sprxwkz i3hat should its length be if its fundamental resonance freque0wpgwq g23. zrszr, i(x )2xkcncy 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 of linear 7 n cr1b nw4ztxb dtpk7i1.lh1qg 4j6-mass density 2.00 g/m and length 0.60bh17-7b kw6icjq tr t1.n41z4 gpn ldx0 m when 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 ixw z i4*wql67zs fixed at both ends. When the string vibrates at a frequency of 85 Hz,wi xql z6z*74w a standing wave with 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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