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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 called th5 0g+xog fgbadoqixe 2)z,2)lp. my;ie

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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 unit6l3kv.9dy-s/f fcja u time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from the equil*vt hvn9 1g, 3zfn)fid xvl-r0ibrium point is calv0vnl vzg h 31dr)-n*f xt9,filed 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 maximum displacementbq/-q6q/yv5q-s mww s from equilibrium, its instantaneous veq/-vqm w6s5 b/ys- qqwlocity

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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* l8htl(jpim -mvv6i,. When the mass passes through the equilibrium position, its instantaneous velotv l8i6l(* m,hpjv- micity

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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 maximu 5rsup;b/dk92 at r8rym displacement from equilibrium, its instantaneopy;k9ar5r b8uds/2 trus 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 sprce.cj)4v7p4cj n;c xj ing and bobs up and down between points A and B. Where is the mass located when j);c c7vjj p44xcecn.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 betwer,to k 2kio42aewzd)4en points A and B. Where is the mass located when ia)er,otk i k4d4o z22wts 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 ver/gzj lp*6g*q jri7 in1.v(+ pes,qmrktical spring and bobs up and down between points A and B. Where is the mass lo(.*lvs pggr m q,nkjz1jr*iqpi6e+/ 7cated 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 fpv*x wlj;cvfr+ o3ni* *qj7;between points A and B. Whrw**v fn7xfcj*+v3 j;ql opi;ere 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-spring system produces whatds.cqtjmi 0if(5+ v x: effd+5t (cs:f .iv0jq xmiect 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 maly+x * 29;z)ylavly uvon7k8fsp5x:ass of a vibrating mass-and-spring system produces what effect on the system's mecha sxvzlykyl avf )5alnx2o;*9+y7 8p:unical 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 vibratif)xke.21 :kmd 9nu52z owpuedng mass-and-spring system produces what effect on the se 9 e wuuxk:)ok15n2pdmzfd .2ystem'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. *rpu+vjxb ,g81k5*l2qx;ug a) nrdmq Where is the period the greatest?u ;gvg)d *,8ln*r2qp qux+5 k1rx majb

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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 sys:mp: s(c / +(fisdcqcgtem causes what kind of change in the resonant frequency of the system? (Assume no change in the system's mass f:icgd:c(s/(qsp+m cm.)

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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 .b x;*o+ zczqjin the resonant frequency of the system? (Assume no.xq bz*o z;cj+ 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-spring system causes what p 9ywgncp7cm(k(zo z3:(5bn mkind of change in the resonant frequency of the system? (Assumec kw7(m9nm(n:5(3g po ybz cpz 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 consis-9jx5qxl +6xk gueof. ts of a mass M attached to a weightless string of length L. For this system, when undergoing small oscillatiolkg9 j6xxu q5fxe o-.+ns

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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 time wk6.dpyc (k*mh;ml;p- n*x oorequired for one complete vibra-lo6yh*d( n;pxpo*wk;kc mm.tion

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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 is T. Pendulum wyn: /z0d g kugco/3u 6(gse4vA is twice as heavy as pendulum B. What is the pe n (go wgz3sdu ec:/k6/y4g0uvriod 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 complji3zk yan8 .m-ete vibration incr38jzia-my . nkeases 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 frequency if both its length aj4u3 -ow.yrhox-hu *o nd mass are incre .o-3o jhywx*hur4o- uased?

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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 ;oso s 0c7*wntforth at twice the frequency of simple pendulum B. Which statemeo0wo *;c7nt ssnt 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 o8- o4,xyu,y ihy9rp ependulum to the Moon, where the acceleration of gravity is les e,,yiyr49- uxho oyp8s than 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 repr n.t ocf3v+v)oye 6me7esents


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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 repr5gsf+1 i jqw2 noiuw mk5x(gs(cmn9 3-esents


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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 represeng)7*i4*ny s i9s7j-zpk:dhpto x1 jst 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 vibration, the amplitude of vha3j.q (8wjwz ibration 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 pointsqp 6b q:nq6:xd of the wave from equilibrium is cal:pqdq6:q xb6nled 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 called thiqe(e-8m 4;kjbr4 fqsp/- i ade 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 waoaefamd 5zt 3 h(9u/j4ve passing a point per unit time is called the wave'eja5t/34u m9zdoh( af 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 is the wave')e2u tgza; v;pjvve7 0s

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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 ha tuok*4.qc j 8 28prez3wsai-appens to the distance between successive crests.ipk j ut4qs28oze*8a- 3arwc if the speed remains constant?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a string with wavelength l and frequency f. A second w kxf0/)rdj9e kave on the same string has wavelength 2l and travels with th xf)rj09dkke/ e 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, and tension T. A sta mn; 0*awzz6lz6rzm*dw,v-c /jt k7kp w8ptj4nding wave is set up. Which of the following is truek d *t/j p,wj z8r-lzpnk;4mzmww0c76 va6tz* ?

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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 iqvds- xm-tsj.-rx9 d6(k6la ls 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 mass(6ad.vd t-s6xjr9k-l qmx- sl 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 speed of a wave in them2 k-m)b*axflg)s npw c2-t9y str)fg*2xsl-nk- c mypt2)a 9bwming is v. What will be the speed of 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 u -a*jwkm:k6etension T. The speed of a wave in the string is v. What will be the speed of uwk- :*6mjke aa wave in the string if the tension is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wave. As an : 6,yzrsi0gjeS wave travels through the Earth, the relative motion between the egrjs 0:i6yz, 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 w ir-rtrgb z; lv:;df8la3kixw5h 7h -/ave is a longitudinal wave. As a P wave travels through the Earth, the relative motion between the P wave rr-ag8 hk 3w/:-xzhl 7i itvlbf;;5drand 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 wavrnzgef l zusb91k/6 k- i35-lve 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 reache. u.j tcz8u+o d8o,wxhs a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected anwo do8zx.u. 8,hjtu+cd 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 j-f( c dn7/c.h7foz6hckw2x w a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same re .dkx j7cc(ohn26wwc- zf7 f/hgion 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 stringv*b0zi45 bhmgbma.z( . The one traveling toward the right has *zmvg5( mb bb0aihz .4a 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 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 kbdtc; y bvl4y2;3tx2when

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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 chc63f setil )a/y*x) frequency of that string will increase by a f*f )hxs3yetcc) ial6/actor 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 mass of 0.+3hge p)o1gjt . bfg,c600 kg is suspee gggc,fo bph.+)tj13 nded from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m a/rwh apn68c (plong a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the ma/6 npwphcar 8(ss 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 con4ydmd/ yio*4lzr 2:r3u f-ih6m tpa1aysc (c*stant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched c2r1(sazrycy-6/f 44 dommuh:3 tp a *i*id ylby 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 k r*nke49 g7bjtk pg-42on g6t0mwy q)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 7qg4 n4kpm0nwo-yjt)2kg9k *tre bg 6equilibrium 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 undve/53 hqvpc k;ergoes SHM. It goes through 10 complete oscillations in 5.0 s. What is the per ;k5v3ce/hqpviod?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring of sp, oq1keyq xkma9 70o4uring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass wk9o,ox m7qe1 uqak y40hen 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 sprinuusbgo;ng:l3(kc* wlb :6gq +iot(n1g constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the total energy of the sygq1s:gw( l+u ikg6boon 3: ;t(l*n cbustem?

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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 is 8.0 2 s11dqn bn4(rky:qo cxh(5jo J at this time. The mass iy(kx 1n:2qcn 51o(q d4rhos bjs cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a bd.,wgfdx x5j.8ueu .p84 0 c e8a0m7ajxtpss spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the amplitude of vibrationjxb 0.8 xg8xje4ppd.8 7.e5 ua,awfuc 0st msd?

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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 constan afogu*65j ,zet 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 equilibe *fj zuoa,56grium 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;ycs6 -u 5vewnx2 iulz i;uk,- of spring constant 50 N/m and set into simple harmonic motion with ;i 26k;y-il euus5n xzu-,wcv 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 horizontaw a rb1:jbj kju75n9-fl spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.1bj 9-w5bnak1jrju :7 f0 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 of an ideal springkv e*m)o x jc-f)vb(o+ of spring constant 20.0 N/m wit-b *ov)m of)+cvkxj(eh an amplitude of 0.250 m. What is the maximum kinetic energy of this vibrating mass?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of a mass-and-spring system is displaced 10 cm c gc0/b2nco;yfrom its equilibrium position and released. A frequency of 4.0 Hz b;ccg0oy/ nc2is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/m. The obd0 ,wzc7tk7 o0:y hzuiject is displace7hu7doi ,t: w0zck yz0d 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 ao,:3m9nh0 rhy/fnkyrttached to a spring of spring constant 10 N/m. The object is displaced 3n hry m0:khr of9,y/nby
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 slitak0xnx g2dxte3,1v r(0sis7ghtly from its equilibrium position, and released. What is the frequency of i7ki a,0tv d1s0x rgsn2x(e t3xts 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 frequency of 1.27 H*xc)0v)qc 8-plhlbwk ;ew q ;bz when displaced a distance of 2.0 ckc b;)* qp)becv;l8-wwl 0qhx m 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. Mass A vib(0yn)ygjt pd* rates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm atjgy)0 *py t(nd 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 massq109v o hhi(gb8(6gkxcg5in h 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 period of oscbi(h 6on( 5gxhhq1i8 g k0gv9cillation.

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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 equilibq9e r- blrqcro cb4m6-7am.;n t:jd 6mrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 69:r7r bj;6moc4 e.blt- nqqmr dcma-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 suspenxhe,h/1q+ h5:yh jtoyded on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is theyjh x, /5hh:tqyo+1hen 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 following pob8*0izpi s z0iv4gk8h:jcnw0sition versus time equati 08z spc hz*kj 0vigw48b0iin:on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 these 8j.6n:8pzifht2t a)iyec) following position versus time equa aci 6) e)ph2 :88z.efyjistnttion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 mot+/imbuviv 2 vq4i* jp9ion obeys the following position versus time equatio j i+p9mq4i/bv2ui *vvn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 executes simple harmonic motio) -.o0nhqembruu3dz7s i 0.sjn*dw. j n according to the equatio. 3 uod7jn0nurs m.-0hq*w .ej)zsdbin $y = 0.50 \; \sin (18\pi \times t)$ 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 attachu ne boi1-v pkjdrn1j28 n5:s.ed to spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is reuv5b: pji1 kn-.nnorse1d 8 2jleased 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 frequency andav.1to2 a bxz0wm8m+b periom twm12va bb.0az+o 8xd 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 i 4g 4wf+-tj mrbqu2yg+s 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. What is its lenge6a;mnsb5.re v5 l v./nr) eqjth?

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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 r:32a za rh;4cyxv/hfis its period on the Eafry4z:axh ;ahrv2c/3 rth?

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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. Wwkeqridgd 8 t82;(f pe8 b5ij9hat is its period on the Moon where thprwki88 g2bt5;dq8e ej( i9 dfe acceleration due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.27: -iculwlll: 5-kg spherical 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 il:cl7w:-ll uhave resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initial angul4tk+yxj p- x:3o;)z dvlaosu;ar displacement of 8.0e. I4 :yod) ; pu ost-xvl+xaz3k;jt 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 frgstjl-b(3/,,k 7gou,xxn ji yequency of the wave is 120 /j- nl,tggx7bys,i k3uo( ,xjHz. 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 at a given time. The frequency of phj.aqj-ih; 7 the wave is 120 Hz. What is j;j i7 p.q-hhathe 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" 3alr;no443/k quz (n vqd)sof of a wave at a given time. The frequency of the wave is 120 Hz. What isfu s4/q)4 onr3(qvo zd3l;n ak 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 p)atq1 z.sk ;xl5 ro mb,eb0ytp2:h wd(eriod 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 wavev ki8z trd9d y2;gw+nz793 mqy 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 12 Hz and a wavqauwb 4 f.;wx-) bvo0gelength of 3.0 g4 ub.fxw-vqw)0;aobm?

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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 ofbgoncl;-ldbr.h j4zp b f )z(:kfjq:; d60wf4 a wave that has a wavelength of 3.0 m and a frequency of 12 Hz?zkf(4r04);l b :pq-d:jgbo;f6njcf. ldb h zw

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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 wivmuu3,l1tcvvke o3fdo2 465o;txy 8ave 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 kg453h jop.6whs fhhr, 1tvyps7 /m is under a tension of 1350 N. What is the wave speev3wh.s4oph , 6fj t7hysr 1p5hd?

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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 iv be, qcz+7x*+ t9(53bvaj tevuulp g6s under a tension of 180 N. What is the velocity of propagation of transverse waves zx q+v39tt+6g(vj,cv pbeaul*b u 5e7along 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 0.5/fm*mkl, f5 rpnkusy9lfxt0,9 7q6qe so8ur;00 m is traveling down a 500 m long wire whose total mas9,mskp;le qrfu r9 *l5o 8 u0f/qf7,x6skt mnys 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 7znh)i -6 tn1g r,m.kfeqfq5glong string fixed at bog7 g-nfq1,rme) f6tnkih zq.5th ends is 200 m/s. Which one of the 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 has a fundamental frequency of 500 Hz, which one oeu( ca(yigiwm w*:z:0 (pxv0wxjn9 5a f the following frequencies can set the string into resonant vibratioj u a i:y0 w0wn*mcv(az:ep i5x(9xg(wn?

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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 xy, bf1goe3*g3h5kjca standing wave driven at a frequency ofgxejkofh c3 35 ,*gy1b 480 Hz. What 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 of 12 Hz with a8n 4rax.z9:wu me0ljo9vbd4q standing transverse waa: rxn 8u.ovjq0mdl94e 94 bwzve pattern containing 3 loops. What frequency 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 tensionl:v7kbp+xe* .hrabqv0 g8)psu 3jr 2 g of 20 N. What should its length be if its fundamental resonance frequency is 2.xvgbb8qra :lp*j+hvr peg k370u2 s)20 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 massssk jr54n czrebk5twr46jxl4)0/c:o density 2.00 g/m and length 0.600 m when it is sr)zc: s5e40k /4jb jr cnwokxrt4l65 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 e27 xp s fubz(9fni;+nqnds. When the string vibrates at a frequencn7s(9f qnzpx ;2+ufbiy of 85 Hz, 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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