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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 tj gqhoui.(r //lcq028dir * fperiodic 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 unit time is caqy ku9c*1q9i(tb p1vxlled 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 displacei-; ,h x -dat/yy-ws*to.yjwe2+z euvment from the equilibrium point is ca-z wi+/dh -atevtu.y,oe-j w2 ; xsy*ylled 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 tq(dp2dm4gz5e :+y ,g g idujb.p*ll5displacement fr bz2d i:p d .l5g,dg4g+*mj(up yel5qtom equilibrium, its instantaneous 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. Whb 3dq,rs)6q4e*f jyoopo:5f t en the mass passes through the equilibrium position, its instanta 6s j:q*bopd q3yr),5eff4t ooneous 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 i 2o)ro81keo xr84sr q;1poqkaw ed) g1s at maximum displacement from equ8oer2dq xgo a os k 811re;wr1))q4okpilibrium, its instantaneous 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 anev )s9xe lb96u5eoap8 r 0dn3td down between points A and B. Where is the mass located when its kinetic energy is a minimum3np e9u8 5dlv)osxtb6 ee90 ar?

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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 vertya/svu c o:1;e y0nwj0 wivb:nn9mh.* ical spring and bobs up and down between points A and B. Where is the mass 9 n jic.0 0 one;*syhuyav::wn/vwb 1mlocated 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 vertical spring and9 acxv+kwgmbt gw27,6 bobs up and down between points A and B. Where is the mass located when its potentialwx 6+ mgbkvac 9g,tw72 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 springwik/ (6 xsm*j h jt+0e-mkxs3l and bobs up and down between points A and B. Where itle j(x 6hw3msk*k-+x s jm0/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 systwaicc67 )jy z,byt uf3n2h 5w:em produces what effect on the system's mechanical ener7 h5 yawwc32zitnf :)jbc,u y6gy?

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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 wb 4evpm7l 6.lqhat effect on lm 64b.qlvp7ethe system'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 2mh2.t vq wmswfohp:h-25h 2na vibrating mass-and-spring system produces what effect on the system's mechanical energypm:q-fn2 wo 2vmhwhh2s h 52t.?

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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 s6jao mjz/db jp;04h46 thb;ya spring, both on Earth and on the Moon. Where is thjbpjz t6h/; 0b sd44myoah;j6 e 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 conjgln:,jmok 1m* c0xm* stant k of a mass-and-spring system causes what kind of change in the ro:x*kjc,j*nm 0g1m mlesonant frequency of the system? (Assume 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 of a mass-and-spgk fewwh;;op 48*ai8dring system causes what kind of change in the resonant frequency of the system? (Assume ne a8 iww8h4 gd;pk;*foo 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 h4.8muw2i ;*je7hh dbrwfa7ucauses what kind of change in the resonant frequency of the system? (Assu8w ueh d4;m*hajbh.ui7r7 fw2me 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 weig q/n7b4fgy8x7vi:k 3kgstpe 4 htless string of length L. For thfpv4ke: g 7t8/73ynik qgs4 bxis 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 nn +ybr)lrm:+pendulum is tripled, the time required for one complete n) +nrrbml: y+vibration

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and B are 3.0 m long. The period of A is T. Pendulum A is *w)bfm bly ml7wzvckql7;pw f8 n2u5lk6q33 -twice as 7lvb 6lckw*lk) w78 w32mfbfu5z nqp3;m-ylq heavy as pendulum 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 jgir).d;o - 7ji2tvii, the time for one complete vibration increases ).tvgo7i-ri;2jji diby 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 lf0vr8y*k ld m2 *2bkgn2ql )zom*dmx 8ength and mass are increased) *28 xqo2mn dlmmblzkd 80v 2*g*rfyk?

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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 frequencpei q-; -m8.ise1iw sfse f*s(y of simple pendulum B. Which statement pe-eiff1s.;(iq8 is -wsms e* 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 grat,w *bt;hmesof)1c,)4yufp2)mj qd mvity is less than on Earth, the resonant frequency of the e,jtucf,s)mo pyq2)m14 b ;t*w)dmfhpendulum 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 repres o w uw(+i+3m jqe*cbi*5dcp7fents


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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 reprvx 3qxi v 8bl.c,h0dt *r.hji7esents


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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 representst:my 131 ozix6f6oa8s7d dgewham5p *


本题所包含的其它图片:

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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 c10xy x2xlie)n9e e6 tw2c)yi of vibration is found to depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of points of the zx7zcdb3 q :7hvpt6 (ewave from equilibrium is called tx6vz3cb( p7:qde 7th zhe wave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between successive crests on a wave is called the wjl/uuj2obh 7e dk+0ahx8 vv 4,ave'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,v 5e qxoy+:s zo/jt2r wave passing a point per unit time is called the wave'soo:5 / z2qje+, xrsvyt

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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 thb8- bwooi5p2yi y7q muo ;fq+)e 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 happens to the distance between sucf)n h c)f(qwmwlcwc;z/ 7/q.scessive crests if the speed remains cons)s/flfn hzw.;mc/cwq w7)c(q tant?

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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 fz0xmc22xy8 u(;i 4 j g9iqlqkhrequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of the se8 kmh9x;2 ig(2yzucx0ilqq4j cond 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. wtd1fw04be .nai g*.c7q 0bda A standing wav e* idt cwa4bwbfda1.0ng.q70e is set up. Which of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. T98mk fq*tqpz9 he speed of a wave in the string is v. What will be the speed of a wave in the string if the mass of q tfpkzq*989m 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- 8dd5zwt +urd speed of a wave in the string is v. What will be thed5+tdu8d-rz w 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 tension T. o 5xt 9tn73n7mq w;antThe speed of a wave in the string is v. What will be the speedw7nmotn t5;xq9 7a3tn of a 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 tra 2s58ysrac:6k4 qrcbhnsverse wave. As an S wave travels through the Earth, the relative motion between the S wave aqy4b:r 52 c6hrcsas8 knd 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 longitudinal wave. As a P wave travne uea :s94ybhx+)ql:qnf 7hseh72/vels through the E qvehe)/l b s7n aehnx4f7+:hu:y2 9sqarth, the relative motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wave i d,mc:idpg 5y(s

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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 tm cbq+i)4a o3reaches a discontinuity where the rope becomes thicker and heavier. What is aotmi3 4c)+qbthe 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 positive amplitudes 1+o9vv a0bkuefze 3fl e+z:k4pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy thl19e+uveae+z f0ofb:4v zk k3e 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 eachc 0.elz bt 8swszj96p* 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 azctj 0sz.lp b*e6 w9s8t 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, su9vfbtpkm y a, rf; dui146-4nqch as a string 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 frequenrq qt; da4rk7-q 4 -m*gzqg;rqcy of that rdrg-7 4*;q ; -q zg4ktqmqarqstring will increase by a factor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring constant of a spring that stretcheso4 egs/g2 mbmm ;k6yd/;og(vgi. qc5 e 2.00 cm when a mass of 0.600 kg is suspicgog;5.o;/q6g(mm kve4m/seyg b 2d ended 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 along a horizon;7flj*5pou2a nzawe07q5pnc re0l h5pone70tal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the cqo;enpja5r2eul7 wz5h0f 7p0 5neo 7*0npal 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 con:( ikyt nz(q5lstant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on they k(:5n(tiqz l 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 tsfx1f4o sv-ni -5 )irco a 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 lr 4)coxi-fs 1-fn vs5iet 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 goesdcd27m zv9fbmlb/ a)hr:, 0ivif,gr 2 through 10 complete oscillations in 5.0 s. What is the p2z0)c v,ffird:damvmb ,i bg927 rh l/eriod?

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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 fromrfig.i:ln ;kyh s;376yjn9 ir the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 7.rjk li:hi 9n;yr y6i 3ns;gfm. 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 spri8p+a et 7h;hw e5 e;dztw*:pkgng 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. Wew:; htw7d5z8th+;pk ea*e pghat 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 amp 6c 5 -3qpnlxdtgm9n/dlitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again setxn g-qdp5dm tlcn6 /39 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 spring of spring constant 20n9q0. 5jh7efgiwa9k90q xgsp w /iq8q N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motw0sn 9g/ 8ejfapq9xiq97qhq0i. kw5gion 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 sprv wsbr:kwonkca 83 k20)zb 7e4ing 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. At what location are the kinetic energy4) kr vwb s0awn8cek3 :2ob7kz 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 hori 4xhu 5;pzqoz/n 8zjj7zontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total m5/j7 4 hj xquopz8nz;zechanical 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 spring of spuoipb- z dx0(lc,.x8)0rbx dm ring constant 50 N/m and set into simple harmonic motion with au0l mc)0-r,.xdx b8 ipbd( zoxn 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 ofz9 (/qoff0 ns8+4h)rtyc8es ljp l*vd an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic ene r lf e)8*/sc0 q98p 4t(nldvhzy+jsforgy 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 equilibrium pos 9jjo66cjmf4u ition and released. A frequency of 4.0 Hz is observed. What frequency would be ob j4 6o9j6cufmjserved 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/cl irux5l0eae3 ii 2t0g2/*pq m. The object is dise 0pqxl/igr35*a2tc ui20i leplaced 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 10 N/m. The objectxmxq /j1hw(9 f i hf(q9 jx/w1mxs displaced 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 sligekiie2 v1/ vk0htly from its equilibrium position, and rv0k ii2/eke1v eleased. 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 frequ(4)ai-tks -p yyy3 zhw,h fn pq84j bap6x+g,bency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. Wh ipg6k4, qzf(p4,yjt-w83 +x-aa shb ybhynp)at 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 vibrates witeij4)gsj5 k*m9d7mmr beyx8 ;h amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz.s5)i84egj dmmyb7* xj9 er;mk 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 the7ic/-ig gjs3 wj pmi2e3os:jf7 cs 3,d 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 period of oscillatio i,sm/ pcwj3s:73gigf d27j o- jcies3n.

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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 equilibrium the mass4x rs,m/+.ub xt;; 5j5n ,lijurdyrrc stretches the spru sb4x/umlj 55d,x i;c yrtj ,r.;+rnring 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 susifa(a r o9b75fk *cnu* d/wlwusq2e6 (pended on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Writeb a fsukadol2qf6( e/(5cw9 in*r 7*uw 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 harmon6z*tt+ +vtj ll 3vlux/ic motion obeys the following position versus time equation:tjlu+tl xz+t /*3vv6l
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obeyl2ml2ah2r.21;m flczv3: v s bwv wct6s the following position versus time equatio6sav1f3m2:2vvzr l;lcwh2.b lwmtc2 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 position versus u;(peyo p; ,411u9.nc x 08qcpaxvmqe yjb1qjtime equationc;4jy(,a uxq1;ox 1pm0 u.vq npjbe9q1 8epcy:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 endswlm3tg)41ewuz k q: n,77sd q of a spring executes simple harmonic motion according to the equation dw7t, uz1 wk7e g)n3:4mqlqss$y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

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74#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A 1.5-kg mass attached to spring with a force constant of 20.0 N/m og2wxva:b h tt65qyv5x+i2r/u scillates on a horizontal, frictionlrx 2yaqvg +w5vthx:t6 ubi /25ess track. At 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) What aru8;h m2f(xdp ve its frequency and period xm(2hd;fp8 vu 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 lon,k m*vl,wmudzs6t8m +g. 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 lengthc/at0 u8ppn q5uh29)aqaq c7h?

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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 grandfhev4 ,dvx6qn w rz41v9ather clock is 1.0 m long. What is its period on the Eartheqvdn 9,rv414xw hz6v?

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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 z3u6 :iw ar8lim long. What is its period on the Moon where thl 3iwu:i6r8aze 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 0.25-kg spherical mass attached to a masscw+ iic v19v+jless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and 9jic+wi1cv+v forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g4boo7yd40hmt mass has initial angular displacement of 8.0e. It oscillates witoyho4t7 bd04m h a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequency of the i.nyf xfhz3(p:oc 0p/wave is 120 Hz. What is the amplitude? p fy.hop(iz/x03cf n:


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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 w q(ap -g iwj-2t;zza1qave at a given time. The frequency of the wave is 120 Hz. Wh2-;z -jwzatq i(g1qpa at is the wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot"a5o5b jd6s qtvg)/nl+ of a wave at a given time. The frequency of the wave is 120 Hz. What is th q6 g t5o5ln/dsbja)v+e 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 6.00 ms?vwm) med 8vgw5(xo.7 h

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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 frequencuthm*u/3oh/1:d fw1 qiv aw7fy 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 waveleng:vz)htc l:zs 3th of 3.03zlt hv)sc: :z 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 h hsky jq)fyx)y/kbf4m44m0: and a frequency of 12 Hf ys4 mq44m))k0j:k yx/yhbhfz?

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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 a;bsk81t owek26x+r my,i , zwhnnd7an; 8y z-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+/w*xsbq-soqh;z8 : r qt)aul a tension of 1350 N. Whatzsr/hw 8* qa; lbqox:uq+-ts) 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 twtptzh/d5.fn 2;ck* n 14 kena tension of 180 N. What is the velocity of propagati/nn1t;k 2 4 tw*ezf.c kn5hdpton 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, pdir/ d,kwz 9u30tou m is traveling down a 500 m long wire whose total mass is o0i uzdw,/ru9k d,p3t
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 propagationln 8ah 7)xj-ka of a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequencylan)-jxk7 h8a 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 of the ttel. s3) cnc5)m ,3rzuvry w4following frequencies can set the string into resonw ) s.)cl4zm yu,tc t5re3rv3nant 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 segmf yy q-yy* t8)9lpam4fents in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wavfy y-a)tmfl* qp89y 4ye 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 a stam1 wc yob iiup*.9q,-fnding transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to contain - iio,ywfu.bm*c9pq1 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 u,e5:bmqieo(tff9pj69s 8 x bits leng8b i9sju9f p 5(e,tmxe6qof:bth be if its fundamental resonance 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 de5q +ufj txzbp2sg e16:mbbpjn)ft+q41 + 0jlunsity 2.00 g/m and length 0.600 m when i0ufjnp mb1u )q+jxzjp :6gl215ts b+t q+b4fet 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 stringgfh qeutxef333rf 0 42d91jqe vibrates at a fre2r0du3 fg 3q4j3 1ffhe9etxeqquency 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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