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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: 匿名未登录  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 )wyxd7bn.ra:y66km ysj- *atcalled 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 proces bzm+ey8m2 +fq1bi+h os, the 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 maximum displacement from the equilibrium point is )mn62aaphl*8(g vfu lcalled thelvp h2nlum( 6) 8*aafg

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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 unfhoh)2,y9rx c-ns /rmdergoes SHM. When the mass is at its maximum displacement from equilibrium, its instantaneous velo) mr,ocs9f2hr-/ xn hycity

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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 equihrxeg74s :yz95 lyk-se 4r(tp librium position, its instantaneous vel-4ylx r epsesk7 : r9h5tz(g4yocity

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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 maximv;ty4br2 n avu+y8gp:um displacement from equilibrium, its instantaneous acceleupv : b;g4ryy2av8tn +ration

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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 s 7a7 )/g fsh.eixi; izd3*hnvvertical spring and bobs up and down between points A and B. Where is the mass located)ihiafzxs v ns*h;.gi7/ 73e d 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 afc1c6az p(i z-2gz )tq vertical spring and bobs up and down between points A and B. Where is the mass located when its ki1i 26azftg czqz)(-cp netic 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 springk;,.jwr.5:e s4fsax cepx1s o0hs9v r and bobs up and down between points A and B. srx w4j:xfrv ,1kh ac0o;.e .sse5 s9pWhere is the mass located 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 smpg/2o++ dr tand bobs up and down between points A and B. Where is the mass located++ 2/d otrpsmg 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 of8qblz4 ahjdl u.(e6)4f .vzt p a vibrating mass-and-spring system produces what effech( zqvpuzfd64.j4)be l8al. tt 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 producrx7z +gd:p a0pes what effect on the s0+ pz:prdax7 gystem'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 rnlig ly ;.71w6limg9system produces what nl .7g;ymwiillr9g 1 6effect 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 4ikd f) uwih2:on Earth and on the Moon. Where is the)u k4wfid:2i h period 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 constant k or.j,g 3c5t:gar8 )di )g,xxuup:yy mtf a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assumegaxg5 tpy,: :)iuxtrc3m,8jyr dgu). no change 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 mbn p*39 ype3 yph*)knrl8 r2mof a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the syspe32mrmklyh8*ynp*b 93np) rtem'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 a1 63kn 6oto7d lczugl(dw 9fh9 mass-and-spring system causes what kind of change in the resonant frequency of the sysgcld 9dno6otzufhw(793 6 l 1ktem? (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 2b:gvqo6dobx 9 n dqm*1 f+2caM attached to a weightless string of length L. For this system, when undergoing smxdoa2ocb q9mbf:qn*g+ 2 16 vdall 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 tripl.h8wq yi(qs hrt(q8o;ed, the time required for one complete voy s8qqqrit ((;hhw .8ibration

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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. ,j5.dj;vur kp 6 kwb:tThe period of A is T. Pendulum A is twice as heavy as pendulum B. What is the perio5jtd6pbkr ,v. jw:u k;d 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 triplk3yl9jppscbhj a. gq d7dk )a)6p91l,ed, the time for one complete vibration increases by a factor. aph sl)39d)acpld9y j,b gpqk6 1j7k 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 ktu)jydaw 8-)dmo),m length and mass are inkad8 y d m)utomj,)w-)creased?

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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 simpleko w;w5yk0 a+u pendulum B. Which statement is co+ky ou0k w;5awrrect?

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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 acceleratiwl kt ) h0(k37(urwyoton of gravity is less than on Earth, the resonant frequency of the pentrk()l u(ok wh7y 30twdulum 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 representw ;vykj y x37fstg/ifn941 :avs


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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 represh8 8 qpib5)b)5 tfijyyq: fz+gents


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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 9h3dz8 wkhg7 xrepresents


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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 oe5d/ 2+s nxmdsf 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 fr j gf6-yth 5vcqy1u0y/om equilibrium is called the wavey-y g065vqfh1j c/ uyt'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 b+q)7xavfac /,jy-ka rgv2. u s )6saion a wave 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 wave passing a point per unit time is w9gnllgw 5 z(x x95*zu -1nixvm+dss;called the wave'sx9ls;dni95*sg5xwzzxg- ( +wu mln1v

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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 t0viu2z ) 4 7;ylgmyhntp. by2vhe 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 happe:navmq2jwbh 5**7 wrbns to the distance between successive crests if the s brj2 hvwm5 w*:qanb*7peed 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 wave xz d)eq*7 8gjion the same string has wavelength 2l and travels with the same velocity. What is the frequency of the siz*jxeqgd7 ) 8econd 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 tensio ) ggm42y ltf.g,zmai)n T. A standing wave is set up. Which of the following is t)gagtfm 2gm)yi4.l z, rue?

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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 tenorwee60 wl ;o2k*z 3c0eqiq0x sion 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 increase2z rw*o 6loexqw e03k0ec0;q id 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 unde*/ qe8 k/lk8 zn/:1xa pp.grerjqfnj(r 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 length is increased to 2L, with no change inr*8e1 ng.ppja/f :nz rq/eqx(j/ l8kk 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 u(,z(q *bf)qk-ri;c9w+txxtd- 3 lt pwt5iozis under tension T. The speed of a wave in the string is v. What will be the speed of a wave in t5qw(lz+p-)t -wzc f;b*xtio ,diu xt9(3krtqhe 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 tra26+snk ofv/ ytvels through the Earth, the relative motion between the S wave and the pt6/+ko yv 2nsfarticles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudinal wave. As a ta(n-ty li31*o(yg vtsvri37 P wave travels through the Earth, the relative motion between the P wave and thes-3r1tv (tv(a iyt i7 nyog*3l 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 wr r n3 7a9gpqgc5 rvgw/eapo5...iwi *ave 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 ri;;;fcfj lu,8xeo4bxgj c ,jk7 ght along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientat oxxjbcejf ,7f k ;ug;;4l8c,jion 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 positiver(7 i* x;rcy1emgrb s1 pdxm0; amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy t r c*r diygxm7m;;0b1exp1s(rhe 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:, mfy:g kov 8tssa+ zo)k,-wl on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the was t v:y-)lo:gkk,+ozf8 sm, 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.sc/v*n(a4pw *lnuj r 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 tensioas;b4/ ,svq.9q tt pwt;,p z 8bij4sozn in a violin string, the fundamental frequency of that string will increase by a factortvspbq.8, si;a b4jz9 ;z,q st4/wpto 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 :zm9j x cb4l,6wiy 0bbstretches 2.00 cm when a mass of 0.600 kg is suspendex jy6mil:b, z c0wb94bd 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 cyu dr:iien8 .uzh6)z,onstant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on zun)r.i6i eyu z,d8h: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 sy yd.ak )/d.es1d3hroc/ uc( kpring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a forceu )c/(kr 1hd/3ysde.a okd.cy 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 springh9(9xm 2psrn o 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. m2s9xo(9rnp h 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 undergo*p sjf*o,f/ gpes SHM. It goes through 10 complete oscillations in 5.0 s. What is the o ,jff*/p psg*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 an ideal spring of s99zw ad8)zn tkpring constant 20 N/m with az98dz9tn wak )n amplitude of 0.30 m. What is the kinetic 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 const6ea6x,6)rqn. 5 7fstp cds8u*cqywguant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion )ufqccs7p d68t .n56wur*qgs ea6x, yand has a speed of 1.5 m/s at the equilibrium position. What is the total energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with amplitude of 4 cm. Thentdye/v;e54 f energy is 8.0 J at this time. e;e4 vytf5n /dThe mass is 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 attach;wryrk(hd vza*5l6g (lwe m,djf71;led to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object osl6f,w*gh5rejdd mk 1; ll7(wv (razy;cillates 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 spring of spring constant 20 N/m along a horizoz(.+ ;v rmxiuwka.r xpvi/)f 1ntal, frictionless supi ;.vx1akr) muxf(v +r/iw.zrface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of spring co eq1g k2drcon4,bvj- ndf)r j:k) (dm:nstant 50 N/m and set into simple h1o2fd cd(:,jdmvr)rqneb4: kkgj )- narmonic 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 ob:ed+ fg-b*e3 )r/go4wbch z xf a horizontal spring of spring constant 50 :gxof*- w z+b4bche/rbe )dg3N/m 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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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 spring of s+ c2jd :ai8lbjpring constantl8bi ac2: jj+d 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 cm from its equilibriumbyf9eavv )k s5vc48h 0 position and released. A frequency of 4.0 Hz is observed. What frequency5kf4av vyh0)c s 8b9ve 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. jx/,t-h ak hf) The object is displaj /xkhf -,ht)aced 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 spring of spring constant 1hr8 b/jv hy-+6eb *uvl0 N/m. The object is disb hy6*/bu-v+lr 8he jvplaced 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 of spring constant 18 N/m, displaced slightq 99-zttu8kll5xxpn o :- hux5ly from its equilibrium position, and relea9k9hlop-:x qt n58x5ut z-ulxsed. 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 oscil:+g1japu u7vmym;lsa9 g2 ; lwlates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attmgm91ga+:7 u s ;;pu 2llwvjayained 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 g *6(.tyogs8xt dre)aattached to different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and madr8ta te( sy*.x g6g)oss B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the /7hqs,-l3dkpl , l6p6elnjvs( c ljz4 mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and(h,j d7 -p3kq,llzl/vn6 jl6l4cpss e 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 springpc:c a;w1n8ug1l hrp7:m 8kt5lmu,ec. In equilibrium the mass stretches the s cr mpck,t wg1u1:up 8lc;:7nhlm e85apring 2.0 cm 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 stretches the s r:ktn2 3p:rjft nn36tpring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm don 2t6 tjk3 tnrrfn:3p:wn 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 position vvg278e 0ew q:d q ,jnu5avufr4ersus time equ5 0qgd2 ur8,n:uaj7v4w vefeq ation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 time eqvgv a65xs7jzr(*hj6 s uatio js(vxsgh6 j7*z5r6v an:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motiondl9kuq 1-e*ip obeys the following position versus time equatioli19q ep-ku*dn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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;9e2bdvwj( i u x;ticb6u(o )d free end of a spring executes simple harmonic motion according to the equatu(( ijv;9dxbu2o)w t;6d cbie ion $y = 0.50 \; \sin (18\pi \times t)$ 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 ) **7gfrt j3n dl(v quh0(tdegwith a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. Ate*udt( rg vh*n0d3 ljg(q7)tf t= 0, the mass is released from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings in 8.0 s. (a) Wr0hcfks/ fwx5yvl s 0kp60(:chat are its frequency and period on Esvc y5(0l/c k fp0hw0xsrk:6farth?

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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 l.*7iycpgs 1qo ong. 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 lengt msa2 o)qpr 0f(fs2xf7u4pj (fh?

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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 grandfahpf4n*3,ym hj r j)xi.ther clock is 1.0 m long. What is its period on the Eartpyj3 h .mf,j) 4nxrh*ih?

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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 peri8 ; iz*a0nboyrod on the Moon where the accelerationay i0;rnzbo*8 due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.25-kg spherical mass a+q6bl,uf .8aj7-jvr l, dzznottached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a freque,- lz+u6fd8z7qbaro,j j .nvlncy 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 has initial angular disp d,c;g b:id1hplacement of , :dgdphc;bi1 8.0e. It oscillates with a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequen .d4vgcmvozcl63x7 .ucy of the wave is 120 Hz. What islgo7mx 46z 3vcvc.u d. 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 g3f8c +zz7ntu9 l)r r f7q 7bwxt qmyzs;5,b;ujiven time. The frequency of the wave is 120 Hz. What is the wavelenc8w9,zs jrn3qft r u 5z bb;t77qu+xmfy) z7l;gth?


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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 atlrg:i2) v qn5z a given time. The frequency of the wave is 120 Hz.vr qz)ng2:li5 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 of 6. nl4ecwh(gt(6zk wjtvnqx49, 1 +mcl900 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/p*u b jm0*gho a wave with a frequency of 1500 Hz?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wave speed if a wave has a frequency of 12 Hz and a wavesb(- f3cyoav )length of 3.0 b)ov( -3aycfsm?

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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 )i 5lrfejo: (1bt 8q0a;w2kwp xgdu z4a frequency ofu qwjx( 8e2koz i b:f);gda401rp5wtl 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 2.5 m wave travel1 1tfuh.:r(drej4a ca ing 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 densitfp0yjlwik e apw 35)+(y 0.0050 kg/m is under a tension of 1350 N. What is the wal)p5pj(a0 +yke i3wfwve 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 tensionjh7f8 b2ujit 2 2gl5;q6jouu p of 180 N. What is the velocity of ppfuj2hl 22juj 7 ;oi86tq5ub gropagation 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 0.500 m is traveling down a 500 m long wire5yj.0p w/hzli0 w( vzc whose total mas5w(0w j/cy0 hlvpiz .zs 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 fixh cd9b r9m8lekx u:7pglub+ ;/ed at both ends is 200 m/s. Which one of the following is not a resonantbdurgl7 9k ;+ :xmucl eb98/ph 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 h 5hprvs;m b-sdz(77 mj k3u/-cvvz c2yas a fundamental frequency of 500 Hz, which one of the following frequencies can set the string ivhvsv7cb zjp(3y/c z-m25;d 7mksr -u nto 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 t 5zlq- cdg48sstanding wave driven at a frequency of 480 Hz. What driving frequencylz5s4 -g8t qcd 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 ojqtht -ea -x+oh6h nc/*d.io ;f 12 Hz with a standing transverse wave pattern containing h/+x c -d- 6tnjooqhaei*;t h.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 denhsa;.*jz n5d tsity 1.5 g/m is under a tension of 20 N. What should its length be if its fundamental resonance frequency is 220sh z .n;5a*tjd 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 harmonicejjfr)a gl :67ukc w+v(m-w4fs of a string of linear mass density 2.00 g/m and length 0.600 m when it is subjected to tensiolaw7+cf-4) 6g:(k uwfvjre j mn 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. b:jr lau8 c1ghe1ve06 When the string vibrates at a frequency of 85 Hz, a standing wave with h u1ba:ce1r68 vej0lgfive 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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