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习题练习:Physics Unit11: Vibrations and Waves

 作者: admin 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 v*e,wjgt((*b f0g phba periodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number of cycles per un l)myo 1liod/8hw( gx5it 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 from3tunrk3q m2 es/v by42fi10 dq the equilibrium point is c s2ifn/03qtmyubq v1rd3 k2e4alled the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at its maximumvh:5 q5cqd0j u displacement from equilibrium, its i 55h j0dqvc:qunstantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass passes through the 3wnyupo.u6 m3ajs j28 5pl lg9ns-r:m equilibrium position,23r j-no.sljlmw9 n36u5yps8 gam: u p 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 thij66rxy: k+lne mass is at maximum displacement from equilibrium, its insta6:kxy nrji+l 6ntaneous 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 )+wl *t:bso trr tr;+pand B. Where is the mass located when )lotr: bw* ;ptr+r+s tits 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 tofdgn kw;- n52bsx+e +h a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinek+ed 5hf;w ng-s2+xn btic 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 6qeo4y q kc0gcjhuv/ 64(jl4 xspring and bobs up and down between points A and B. Where is the mass located when its potential energy is a mc4juqcv 4x6 l/(k0 yheqgj6o4inimum?

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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 bobs1o.l truh,5pe 5qc rq. up and down between points A and B. qc q. ,r1o5tplh.ue5r Where 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 massb5mep+ 2 cf j(yu-fr:o-and-spring system produces what effect on trcfp:u5j -2yfbme+ o( he 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 producesr 75ja/u sso wg7k4xd2 what effect on the system's mechanicaskrojgs5 a7x d/2wu 47l 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 systemb e g17ibasbtg3o 7;*m produces what effect on the system's mechanical energyesob*ta7g 7im;g 13b b?

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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.)8j9 v,oqp /(zc*lhqpido z;b: m*qyt Where is the period the greate*(vziomp qyz)9 *;pqto d,8 :lhqjcb /st?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring c2za hkmxmj-( +onstant k of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no chaj k(mm- 2xazh+nge in 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 h 0*3rgc/* +ge1(99w tp tz azhvc0-vyevpqorin the resonant frequency of the syst(v-*3ozrc g 0 pawy9zv9 tcqg r10pv/ +etheh*em? (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-and-springmb wuq-: tfa3( system causes what kind of change in the resonant frequency of the system? (Assume no other changew :f-ua tb(qm3s 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 attachec7)9 so11u a0)jzkdqgbem6qkd to a weightless string of length L. Fo7a9zc )11dgo ju qbsk 0q)ke6mr 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 sijoivnc 0 -ix91mple pendulum is tripled, the time required for one complete vibrationijc-i1 v9n0ox

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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 aresdspsn v2*, ,wkym)g 5 3.0 m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the peri *sd25n,p ssywmv gk),od 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, gekq2z ) b.nt1mm( 7afthe time for one complete vibratmqf.1t)nz ag7e 2 mk(bion increases 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 simplefj w;ipkv 9j:a2)*isf pendulum's frequency if both its length and mass are increasediafpkv2;9s fjwi) j:*?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swinvra 6b(7w0yw bz jpzpg )p8dml1,5u,ygs back and forth at twice the frequency of simple pendulum B. Which stygb751p jvwwblmpd 8p,) 0az, (rz6uy atement 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 q, r,p;sfg :;87fb.hwn3g qpxl ,wnflacceleration of gravity is less than on Earth, the resonantl7gw,,,f;bq l.;3f rnfhnwpg s qp8 :x 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 representt(yfq+s2 y /jes


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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 reprvqka0 . m,)wfbesents


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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 repref01 / yhj3:: 4ocejltvqm qqi*sents


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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 to depend on tja w:n dqu4s;v*r 7y06adpig. he

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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 t,,mi 7eb qmqt0he wave from equilibrium is calledt,q e7m0mbi, q 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 wagscw h 8)+wm9o-5o dgeve 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 waveqp*rqw ;v+1 zt passing a point per unit time is called the wave's qwtr*vpqz; +1

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequency times the wavelength is the wa1leek5e : bgmi, 9h2*oa qgso0ve's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave increases. What happens to the distance between suc j*f ky ozwx-8oeni 5j o7s:p(60j, njdpkee-,cessive crests if edo wk7jn*ezio6kj:x op8(-,p5 enfj, s-jy0the 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. Ask.+v nbrs5dwee 5 w,6 second wave on the same string has wavelength 2l and travels with the same vekre5+ews wbd6, 5n.vslocity. What is the frequency of the second wave?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a string of length L, mass M, and tension T)rq:gz(t*0an cz bzq8 . A standing wave is set up. Which of the following isq z0zbrngz(ta*q8c ): 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 ;qam3yp4tyl 7 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 mass of the string is incream;4y t7q3p lyased 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 tex- hz+8b7f5gl f4iim dnsion T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the74-df+h5ixlz fmbi8g length is increased to 2L, with no change in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of atcya4 y2dt i83 wave in the string is v. What will be the speed of a wave in the string if the tension is increased to 2Tyai 2c3 t48tyd?

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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 Sy 8ox;uz1b69 te5prvnc*9 gzi wave travels through the Earth, the relative 8r6t n9 xvbp19g5;*ieczz oyumotion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a lorl c)v*/w8azq.n q 0agngitudinal wave. As a P wave travels through the Earth, the relative motion between the 0lw)q*naa 8cgz/rvq .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 iss 5 -wjs7qmq8q

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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(wdt0 q2*lqvy discontinuity where the rope becomes thicker and heaviertdl2qv *q (0yw. What is the orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positiv)uxe),u3 mpankf;2 vn /wmm (pe amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. )p emn 2kfmpxauu)vm/ w(,n3;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 j. b/ li1h h23w :qnh6zv2fafceach other on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. At the point that they occupy the same region of space at the sna62f /bzjh2 l:hhvqi1wfc3 .ame 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,i rwk xvm7t(1 y/47kobp.h ee fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundamental frequez cs *wlk4*7rcncy of that string will increase by a zckl cr**7s 4wfactor 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 2.00 cm when a mas z.j-b1yo0)8 scmzp1yj,f inzs of 0.600 c zz j0yszjp,-bo.nyf im)1 81kg is suspended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a +3/dyj9lhd novxnb) + spring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the am3ov +/lnd)d+j y hxb9nplitude?

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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 slj .6 mf0fumu )/fn(jnpring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is osc6 f ./m0juf(nnmufl)jillating. 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 sh2o p*bgid70wpring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillati0gophb wd7*2i ng. 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 S5cobmad fy :+n vvs.owt+r,56HM. It goes through 10 complete oscillations in 5.0 sm .:s +rt,oawov+5bvcdyf n 56. What is the period?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of a6dj 5km k-6f5vl msw*xn ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the ki 66 *xsjdmk5l5- vkmwfnetic 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 spring constant 20 N/mgk zc 6n( ,dlfhw5.xfhw *x8zsa ye1.* 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 encknde hy( 61z .*w5f.*a 8wz shxgl,xfergy 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 e.or k:1i43j7m b 3hm0a/ y4opysoa fudnergy 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 e1so7pa0uj3bmkdo hy:r i.4 /a m fo43ynergy 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 attache4 .q2 l 0nyy9ve5lhnqod to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmy q0nel.yq h94n5lv2 oonic 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 constant 20 N/m along a horiz5kfo ecnr.k: 2ontal, 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 fc:k5ken.or2 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,j x((xlq+aq -yxup(n constant 50 N/m and+(qn y xjq(pu lxx-,(a 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 horizontapdgf8+n8 ad03si y jv 957ubzal spring of spring constant 50 N/m and set into simp 7z0bv+5ay3ais fd9 u88g pdnjle harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of7/bpdw g)6mt/(m4rx5kwa m2lnaxj qnr*zh+, an ideal spring of spring constant r mnz/a 5*7xdrl,2(nqwa +mt4jg w)6xhkm/pb 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 is displaced 10 c4zev c (ym:7plm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass:e4zvmc pl7y( 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 i3 vb*umsgolmt,o 3x27s displac lsomu37 , motb3x*2vged 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 attachem8r z-1owklecm2,+i wd to a spring of spring constant 10 N/m. The object is displmire -mw8c ,12ko wlz+aced 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 a spring*hvndf7 0rqv8 2u, tbt of spring constant 18 N/m, displaced slightly from its equilibrium position bt,*7nhuv0vqd 28rft, 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 oscif1n pm g21o/hcllates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum onp/ g1f c1h2mvelocity 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. i(n6mjj6bls - Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vib( msjl6 -bnji6rates 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 spring. In equilibrium the mass stret: o,41thk, t 65crle/j hhtemfht4w6tches the spring 2.0 cm dh f5oh ttktw ,e,6htm4chej 6 rt41l/:ownward. The 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. e; yyf zle)g q qa1r8/.khbnd+cik.2. In equilibrium the mass stretches the spring 2.0 cmk.f81q r.;/c 2gnzekl.y +)yaqhiebd downward. The mass is then pulled an additional 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 stk jj+9/ qtz9keretches the spring 2.0 cm downward. e+kz/ktqj9 9 jThe mass is then pulled an additional 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 foll0. ,qa6 5,vwwypi+qel e.xc fmfv7tv5owing position versus time equation.7mvat 6+.l wvfvi5q ,qf05ecw,p xe y:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obkbk;+ ,fo p,kq./,e4yi rycdzeys the following position versus time equatio kyc,f ek.b; zr+yqpidko,,4/ n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 positmx.p jqd+d1 :z ct8qr-ion versus time equation: z.1pjmd -+8r:tcxqqd
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 execuxc8o j4rvv 6nlh1kz./tes simple harmonic motion according to the equati xro84n v1/h jk6vz.clon $y = 0.50 \; \sin (18\pi \times t)$ 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 tpdu 0ohu,4s,d *52r5 i epdgjjo spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass ij,d5*updu5ro0dhj2p isg 4,e s 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 are its fr;gxjr ,(9 iu*sxehki 8o; ;l.ec pd4ipequency and period on Earth?jhci; (xelo.p;kxdeu;8,p ig 9isr 4*

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m long. What is its period on Ear.hrzdgq dy3yhe;j- o;1-w* exth?

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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. xzfw ni-uze i4ec x124lc:e8;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 lote; p,r7 yrqd,)omh4ong. What is its period on the Eart;h,q4d) te r,7 yormoph?

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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 ongo.y.z zu-a d;:sx8uu the Moon where the acceleration due to gravity i:g yuas..z-odx ;uz8us 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 mass attach51 c)hvw)8ax2wuk:kxq+cxu kw. cn)ded to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth wx8k1qu2x a+xw)) h.cwuc5 c )wk:nv dkith 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 conhy3lufjta .*0c.*ksisisting of a 20-g mass has initial angular displacement of 8.0e. kc*fhjy*a 0.t 3slu.iIt 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 wav4qsl,*iujbe; l 3uqu ,q34gtbe at a given time. The frequency of the wave is 120 Hz. What is the amplitudesbugej 3l 4u4ql , t*qqi,u3;b?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. Th8bhuo;y* f y(lt+ a w8xuny*)he frequency of the wave is 120 Hz. What is the wavelengthubfnuyhx * ;+lw*8yohy(8 )ta?


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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 givereq4/7 o2izoot0e z;sl9 (ela n time. The frequency of the wave i(otarql9z /l7 4oz esoei;e0 2s 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 wave which has a period get 37:i*qzsuln uz*xip/i;- 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 freq3 ,ucu 3 :b.qx0l-su tdu /fjw2lptkiu55-ohcuency 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 wv 1t em t15y.yv5nb1+ns sy4olavelength of 3.0 1t1y45 yym.5s l t1vbnsvn+eom?

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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 w p1b;v)b+ opfmgkb0b.avelength of 3.0 m and a frequency ofvg1 kpp);bm b0obb. +f 12 Hz?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a 2.5k34h2if 9a,imxw; ffu m wave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/m is under a ten25 uzl,q,pg / 9:fikcat)e/bexu*x mhsion of 1350 N. What is the wave s,te/pgh b:l) kcm*a x uuxez q,/i25f9peed?

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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 180 N. Whatn;mgywrn,3/p 89+o cwzx1z cc is the velocity of propaga+z 19,;wcy x3/8nrcong cwmpztion 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 0mse /5on3a6q .8ri mwx.500 m is traveling down a 500 m long wire whose total 3a 8i6 rwxs.m/n qem5omass 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 fixed asifj/ -f4n9/h wkpmp1t both ends is 200 m/s. Which one of the following is notpffn/-9 ij1w /ksm 4ph 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, which d lq6g*/;qtmw. v: 4phe3g hnaone of the following frequencies ca*d/g63 a m:qe phnqlw .hvgt;4n 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 isc0kxlh99v mn6l xx hwi/90+ kn a standing wave driven at a frequency of 480 Hz. Wm+x 0 lx09v 6 kkhh9/lnixcsw9hat driving frequency will set 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 both ends, vibrates at a frequency o* z d69zdn:atbf 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern* 6dd 9azbzn:t 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. What should i7o(,q 0pu xkfzts length be if its fundamental resonance frequx fk,zu(q70op ency 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 linearr5*ufs gu fb,* mass density 2.00 g/m and length f g *bfr5su,*u0.600 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 the striw .akyv 4g*-jcyr8 y9onb n6+cng vibrates at a frequency of 85 Hz, a standing wave w+ngyb*wy68 o9y.-rv4 kcnj caith 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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