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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 o(wat38ywy0u: qya2;- dswo rsf a 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, the2a57m xv ccr6 8qphg:j number 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 maxj/ho5pv)3j u3jx .ywximum displacement from the equilibrium point is cyjuvjx).hp3 5/x jw3 oalled 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 undergoe.zff(- 8ifa.i ozkn9u ag)6dd s SHM. When the mass is at its maximum displacement from equilibrium, its instan f zazg()fi.9f6ouan. 8-d kditaneous 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 0yc *9*nvah5gqsar/ 7f*kirzo 8e4ny through the equilibrium position, its instantaneousf 4yai veogn/ 50a*r7qr*yzhn *8c s9k 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 maximum displl /qlvmek07/k+fq(.vcd nug 1 acement from equilibrium, its instantaneousgf v/v.q+ n0l(m1ce dklu7/kq 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 bobs up and down between points A anx)dr7++v p blnd B. Where is the mass located p+vbr)xn +l 7dwhen 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 veox8qcq q2(mhi*n c.r 3rtical spring and bobs up and down between points A and B. Where is the mass lo xq r(ho2nmi*c3.qc q8cated 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 verticjr z*p mo4vf0r*1tx-0( ebcural spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a mini-1rv(px*b 0 z 0r orjt*um4fcemum?

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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 2:70hy:b ;t qb wwar3ywlygl8spring and bobs up and down between points A and B. Wg3 l8w7ywybhry qb20t:l :; awhere 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 amplitude of a vibrating mass-and-sprin+dr4l sd vr9),nwk :pgg system produces what : pdkdw lrgr)vn,9s+4effect on the 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 produces wha-4vaqrw j-8,mj6ee hb t effect on the r-qhjj8 bwv 4-6a,em esystem'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 vibrating mass-and-spring system produ;s;zdw tm2m 3kces what effect on the system's mechanical wmz2;;kd st3m 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 Moo/,bc jb ;rzgy; eab8v.n. Where is the perb zvyarjb;b.8 ec ,/g;iod the 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 co+aca+ 7qy6 r0iwwtn8k nstant k of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's mass m0t6 kyaqw7nc8+ +w iar.)

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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 ki.th kc.o*vlo x;tcxfv 6z+c21 nd of change in the resonant f o1f .kv* ;txc+zvh 6ctl2cx.orequency 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 of a mass-a0t(x*4- v/ mkfeve shpnd-spring system causes what kind of change inpv/0khe 4 e*(-xvst fm the resonant frequency of the system? (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 consists of a mass M attached to a weightless string of4nm*g 4l j0srp length L. For4lr*nsgjp0 m4 this system, 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 pendulum is tripled, lo a0747 ctgz -dc-ogwl- s60wuxe6 xr:f1f pdthe time required for one complete vibrationdf0-:e6lxdwp ax oc 6c tu s7lg7f41go-0z-wr

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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. d g psftuf2vxu,v6n/ 5;p /yziu7d9a 4The period of A is T. Pendulum A is twice as heavy as pep4fit ;v/ uzsga 7fudd,/5 6yu xnvp92ndulum 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 pendulum is tripled, the time for one complete vikw wi1qz3(c)kbration increakk(z w q)cw3i1ses 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 frequ/ ludvb94 h2dpency if both its length and mass are increased?p 4 d/uh9b2vdl

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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 simple p0,ifa,)e igi,od1re5(p ky+iu /kfyjendulum B. Which statemyi/ kk fu+)yr oi e,j1,fgiid,5a 0ep(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 grav s6enrl 4b2n6ni i3o8bity is less than on Earth, the resonant freque6s o6inn38leb brin24ncy 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. 11-15ui eendt 0z:-h j8thm(h 6/ms 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 represents z8llti7f36 lw


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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 represent13 cc:su50pdmoln 5 9r1.bdvy; mkwp gs


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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 vibration is found to17rcgc l. z:rg8nt d3n evyha2nw1j(2 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 :p9l/6g:invuzhym+m4* y3s 8uhjsle equilibrium is call8s6hn3mg+ :s vm4pjl:ulz/ eyuy9*hied 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 cal8a7(blc+d f h 1qm5n* etufk-nled 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 is called the wavicz2vu1xf (zvgl .) 7he'( zvx.7fg1hzcuv l2 i)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 waveleng 3zukm wdaxsn *cdrauw (,)009th 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 happens to the distan4ndm 5o0 +-/o w(cqf h5x *) ldrnec1f4qixsazce between successive cc-o/0 f +qi1f 4 wncdn45xema(q5hzsod)*l xrrests 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 seh 9rqg:k*k*)sp dvf3qcond wave on the same string has wavele9v)r*:h pgf* ksdqk q3ngth 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 string of length L, mass M, anbuobj9v )jb*7r4sm 1dd tension T. A standing wave is set up. Which of the fo *9du14sjv)7bmj borb llowing 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 T. The speed of a w9 -zqvyig64jy ave in the string 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 chyzvg4 -6jiqy 9ange 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 idwut5 vad21vhy4fv, 07mbw(bs 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 the lm5d1v( wawd,b2uv 7ht4ybv0f ength 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 speed of a wave i u2ww z ,hswq;h5br.d5n the string is v. What will be the speed of a wave in thewhh ; wb s.d,wurz55q2 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. Asu1 l,1vzalg7- kt *ucsgl;.p asrhm *) an S wave travels through the Earth, the relatir1)t* sg ml-klzaa7s up*,u;.lvgch1 ve 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 a3d yx4uoak3e 5 longitudinal wave. As a P wave travels through the Earth, the relative motioa kd54 3u3xoeyn 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 wavkm z++1+1glr1hnh6p ubgop0 ee 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 a thin cord reaches a discontinuit(;y hk vd s+a1loqk5)p.k)xqa y where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses? a(pvkl)ya5qx.1hsdo)+;k kq

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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 eacbmo 5-t bgx2x5h other on a string, one is traveling toward the right and the other toward the left. At the point that the2xtm5g-bbx o 5y 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 tra/bi,gkfvf;g ,p(er a zlp49h 5veling 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 occupy the same region of,fp4/b z 9gafpvk l(h;,geri5 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 w n.+b*k rq+94spby8 lc,ya acdhen

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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 violiw /* dpvcu(om:m+npb *n string, the fundamental frequency of that string will increase by a fac/:(d+cvp pobmuw m**ntor 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.fxr5d. t 22zpey1on6c00 cm when a mass of 0.600 kg is suspended from p 52d6f1zc neyx o2.rtit?

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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 horizongbs t).d,cvw 8tal, frictionless surface. The spring is inwv.,t8bc ds)g itially 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 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 horiz*p ciqrrhw;(qz)9 tz(ontal, 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 period of oscillatiozp r(w(9q c tq*z;hr)in?

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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 als-c64j x. hhtpong a horizontal, frictionless surface. The sprin6 - cxjshhpt.4g 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 SHM. It goes through 10 complete oscillations in 5hm wsdz j22iq gb5 1u,eymgj*w +fx,5;.0 s. What is the period?+;fejs5 wzjmhm gb uy* q52 iw2x1gd,,

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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 2 bap xpk9r8run (.qg9end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic enr929kgx qpu8(pnrb a.ergy 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 spring constant 20 N/m along a+lv+h)bum6f 0hc39:lre hm c y horizontal, frictionless sueh u3h+h+r0m:yfc9 c6)l m bvlrface. 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 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 SHMfq0xf ;7e fjr3 with amplitude 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 the enerjx7f e;3qf f0rgy 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 spring of spring9hd./qzve xacr*p 4q6 constant 20 N/m along a horizontal, frictionless surface.dp6q/v 9hc.x *qza e4r The object oscillates in 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 spriu hji:;+sj7/3vrf pibng 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 equilibsfp3;bjij/u+rvi7: h rium 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 sprink jj 40sepzsfkgqy37pj+q 3;p.+ 7ry ng constant 50 N/ yk+p73p30prf s+e sg ;q ykj7z.qnj4jm 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 attached to the end of a horizontal sprinv/,y1y+b p zzjg of spring constant 50 N/m and set into simple harmonic motion by+pz1,j/zyv 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 backq:e8pwo jj29,kf yijso (k28v and forth from the free end of an ideal spring of spring constant qkfeow2 2pyjkjvo,(j i88s9: 20.0 N/m with 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 8nkk.7 zpd) -i5p+i c 8oiomuris displaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would ben)rku.idc-7oi58ko8i m+ ppz 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 spring constant 10 N/m. The object ii,;lnxv.ao fm).;obo 3ipcf: c.bo;) lxf i,3: amo.ipnfov;s 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 attabsb hz kd,q30*ched to a spring of spring constant 10 N/m. The object is displas0hdz3,k q b*bced 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 from w7a(okvm/ 1g ea spring of spring constant 18 N/m, displaced slightly fromm v a/e1kog7w( its equilibrium position, 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 id2ra(fvabn uj85 b,*(klo(n frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is t8bo kfnaud,j n((lv ib2(ra 5*he 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. Mass A vibrates with 05 vnis mxu)9pamplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm n95 p0vu)smixat 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 spring. In ekm,md( r3b n8kquilibrium the mass stretches the spring 2.0 cm downward. Tkk br3mn d8m,(he mass is then pulled an additional 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 equil ps5fx-y qb) );;8fj zde8m4nmrvjqi,ibrium 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 t;e )jn 5f szqxri-)bdmfqp;jyv,8m84 otal 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 equili(k;5 .r kyhj(dy h d4a4kfju,hbrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distancedyrk kd j .kh5(hfy jua(;4h4, 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 motiq(y+3z9yk knbon obeys the following position versus time equat9q knbkyzy+(3 ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 versus tz tl,saq(5(ouime equation:qs, zu(ol 5t(a
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 position versus tim8*g.mx4xfbr2w dcrpg 6bdzqd kr ./1* e equationx*8p4rq1k zr *xmb6d ./wr. fg2gcdd b:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 en ps0f(1ij:.a3 qayi4hfzb f-7akabg +d of a spring executes simple harmonic motion acco baszqk4y7 gf3i f j(p:0a1a+bhfai.- rding to 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 ctbev )s4. mz -)lhfum)onstant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, 4 zulth-m me)svfb.) )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 cgqdo8r.g l5ljk 7 /cd4omplete swings in 8.0 s. (a) What are its frequency and perig8cdql.rkl5o7djg 4/ od 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 yh ci3.hwu:hl 8n1*ae-n5iodits 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 its lkoww+ +; //kv uh:(a(fgujgmm ength?

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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 p0paeh+i:cx j b4c9 olo2 qum(c,(yx 6m:epcl2eriod on the Eart2+boly p:c4ce(jc p h:92u,x ql(imcaxo0me6h?

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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 perfzr)ik ajc8 88dk/-)f wu5wbaiod on the Moon where the acceleration wc8)aarkb5i dk /-f8uf8wjz) 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 sphericafshxa-*) .xaxl mass 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 a 0.50-kg mass (same diametehx aa) fxxs.*-r 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 initial n4spd-+ ju9/s zfg 0h-pg rao:angular displacement of 8.0e. It oscillates with a pg ash4-/gznfuj p-sp+od9:0 reriod 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 the crf9mk0cgw;v2kzhl+ *cr+;l l5qs 4n wavmskh+*cfk c 5+nq;wlr0 c2 4grzl9lv;e is 120 Hz. What is 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" of a wave atk1qr;o d 7g4 e.nj(1nx)qd itt a given time. The frequency of the wave is 120 Hz. What is the wavelengi)1rto.n ;dqqx(17 dt 4kengjth?


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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 freqkhuzsc( :9 b-juency of the wave is-9:z kjuc(h bs 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 ak:iu 7nv5 khh0pg y3yxy/y.u1 wave 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 frequency gpjx,0 f8n) q6kvge6hof 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 wavelengt8*inn5br*l przf-(hmh of 3.0 bn8 i*5h f(mn rzlpr-*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 3.0 m and ivxd(e u67+a h1)h+ xvczo+s;lfzd n)j j8lw4a frequency of 1(uc ix+zex+hh+8;n6z) l1f va47 d) ljjvdows2 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 frequency of a 2.5 m wave traveling at 14000 7:mqtssji0/*pm 6,zbtg1(ei3 uunlbs smh* 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 linemnz;4 fs 5soqup4i70 ear mass density 0.0050 kg/m is under a tension of 1350 N. Whatfi szem 5os4;p74 0qnu 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 under a tension ofppvue(,r sf 5( 180 N. What is the velocity of propagation of transvf ,us5(rpe(p verse 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 i0e-xxxj :c)lu:cl ja a;09cp ns 0.500 m is traveling down a 500 m long wire whose totaxj;-pnx: 0xa:aeccl u 9)l0cjl mass 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 plmf8h*c:zk 9 a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the followiz:m fc*h9 pk8lng 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 fundamental frequency of 500 Hz, whicno6 ro 1iyr-z8h one of the following frequencies can n8-y6zi1roor 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 dyxdr6l p m)1xt/kn7r4 riven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five pkrm 7yr4 x6dnl1) tx/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 12 Hz witwu-v noheat1xqcud6+y) ;/0u h a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to contain 4) o u;6uxadv whty0qc1- +en/u 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 unde- 12e,fyncz lyxl(0dor a tension of 20 N. What should its length be if its fundamental r x2oy ,e-yn(dcl0f1z lesonance 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 a string of linear mass densitsch39si(90y efj)y (o*q gijjk(u3lj1vni d-y 2.00 g/m and le l j3qk gs(ivf 1jdn(9)jy is0h*93-yijou (cength 0.600 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 is fixed at both ends. When thn2/w0 jcmb7 2ou 6o/hbcica2ye string vibrates at a frequency of 85 Hzyc2027/j m abhobu w/2oc6inc , 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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