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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 periix)*i*p3+tw , r uqdikodic 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 called i/e/wu :kbwha )(pd:e 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 cy0 h8y;fvlb n8alled thf0 lh yy;bv8n8e

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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 maximumcku(-rzaz5, g displacement from equilibrium, its insac(z-k5,rgzu tantaneous 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. Wh1ujqf6 r 29fbpen the mass passes through the equilibrium position, its ifq9f6rj p 1ub2nstantaneous velocity

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is ,uu do;fnxa +3qka11l at maximum displacement from equil u3na+1aufkq;x1 d ,loibrium, 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 spjq/d 7przgnj *d36q)tv p q(,oring and bobs up and down between points A and B. Where is the mass located wrqq 7),jdd 3z pto/jgq6pv*n( hen 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 ulgc o /l+,o4oup and down between points A and B. Where is the mass located when its kinetic en /,ugco+ll4oo ergy 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 7px4 8o 2c-p7e,l vf pv252gkupsfpso vertical spring and bobs up and down between points A and B. Where is the mass located whes2v, cof7oe pp8pg k-v 24pulxfp5s 72n 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 ag1mr noh)zt g7/j wr/3zeh;4 cnd down between points A and B. Where is the mass located when its potential energy is a maxi1wrhz3;7e )th/g r4jg /ozmn cmum?

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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 vibratinh3hnu 7lss .;og mass-and-spring system produces what effect on tsh n73hl.;souhe 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 mawvzof.(/ c ym:ss of a vibrating mass-and-spring system produces what effect on the system's mechanicalv.:/ z(ywfm co 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-andx7jdgve-q- v,gc5d * +f+6v7bpbg o xk-spring system produces what effect on the system's me*f- og+dd+gb5ebxv7 cjv-7k v,p6qg xchanical 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 gnfr:w -fsrtxqo 8zj 80 ,m-8zon Earth and on the Moon. Where is the period the greq g8r8: mzn0rwo8,f-zjxf -statest?

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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 system o+rq- val8 ooy4* qhw0causes what kind of l+hoo8aqwo4 0rv*- yq change in the resonant 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-spring system causes what kind otgs5 3ky o5ho;f change in the resonant frequency of the system? (Assume no change in the system's sprinohgo3 s;yt 55kg 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 systed,49p aylbcu0m causes what kind of change in the res9,aul0 bp 4cydonant frequency of the system? (Assume no other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a mass M attached to a weightless string 0dqe lyriw/:cu+ *ao2of length L. For this r:/2qda+ iw uceylo*0 system, when undergoing small oscillations

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the mass of a simple pendulum is tripled, the time required for olr 1 4qyr(m.bgne completebr.m 4l1g(qy r 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. The7c zl5 k.ffnc d:0sn2e period of A is T. Pendulum A is twice as heavy as pendulum B. What is the perio l k ce57z.df2n0fcn:sd 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 e-*f+d) 6v(:ae . xdgjypakq isimple pendulum is tripled, the time for one complete vibration increases by a fa yk)jd+ief* - :dxv( ag6.qepactor 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 len0 ucwel ;3mk4( mclje1gth and mass are increakmlwje4c ;3(mu1lec 0 sed?

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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 simpm5b-ka z.9bnxle pendulum B. Which statek5bzan-m b9x .ment 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, 0h+x vg vrkl7d9 v-3)xjrctd:where the acceleration of gravity is less than on Earthr0dj)7v:hv- t rl9+gckd x3xv, 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 repre0vt+ /p(u, vanj1g ki q wlz5(xbk1:dtsents


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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 represent 01ju; uvlgjf 0b,g,.we5ng gns


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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 represento+ ;:l*rrlch gs


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibration, theyfws.9y 8 l*+cc f rniuse9*a- amplitude 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 wave from equilibrium is car(4irv2s: q1 hbbv 7m5q 3a4+e;hwt7m atslcslled the wave's i4q;7vrlaw4 e1( +h bt 2hamvs7tmbs q5r:cs3

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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 wavinenasby,6h +m 4h p05knou94 e 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 called t q hom.:2htoe,he wave',.ot2: eomhq hs

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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 thengu.ic1i2j j 23/ wtho 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 succhouyun*h, ),; s 2kqtaessive crests if the spe,2*yhkuu)h oaqt,s;ned 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 second3dvfe;vs zp+qz1 fy,y5rcb.s4u *f, w wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency ov ys,ps* fy5zqcuf. +43;1b vdwz,reff 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 wjzqeuw.u j(w s(h 9/ v-kfi.q)ave on a string of length L, mass M, and tension T. A standing . 9k hfejus)v((q wu wizj./q-wave 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 yxn)+ k,wuq(* -hvvcm.9 idw junder tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string vck9 w n xiv-yj (*,+u)qhdwm.if the mass 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 isnj*+ r3sks d n3x)+ols under tension T. The speed of a wave in the string is v. What will be the speed of a wave in the strin ndls33 s)rnsj+k x*+og 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.a+1df1yzu .u:t10 jyjc zb. yt The speed of a wave in the string is v. What will be the speed of a wave in the string if the tension is incr: yz tyuy zft1+ajdcujb.01.1eased 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 wk ( at72*bhdxnave travels through the Earth, the relative motion between the hbta n*7d(2x kS 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 longitudinal wave. As a P :usx;* eonht9 wave travels through the Earth, the relative motion between the P wave and the pa;t:euxohs9 *n rticles 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 n(n4:k9rj n5tf qw u- lkqdj.3aq,ps4is

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave pulse traveli7*vtjy nr*eabvoq28f+n na 02ng to the right along a thin cord reaches a discontinuity where the rope becomes thieqv7 tj2ab*rnn2vn+o*0y8 f acker and heavier. 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 positive amplitudes pass each other on a st1g9l :cova9of3 e /to4f lhj,cring, one is traveling toward the right and the other towvfcgoto3: 1o9lhj 9, 4l/eac fard the left. 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 each other on a string. The one traveling towar)a0t5s 3 qvvgud 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 5t)asg30qvv uthe 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 +iim0q5(n vnmxame80string 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 frequency of thatak l * ux+6amfd:)ws,k string will increase b+x kf, alkw)s m*a6ud:y 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 consaotbws ; )pn 4898 qbctnbua*+q0uj)ktant of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended fr o8j9t+uc)bkt n 8;0ap4qnsuwb a)bq *om 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 cv yi. y-0/)el7pa lndponstant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the d7-/l ipe0.nl pyy )vamass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the amplitude?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 xi*m .zy+:3jcg* jho2:z qgnnN/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 0znh 3*yjgq *z2+cmo:ijg:n x. .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 ju,1 pe : 4g12be 2hjd1famg1t+ketsh constant 60 N/m along a horizontal, frictionless surface. ebe ae, hd2j h1fgj 1:tt42gkpm+u11sThe 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 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 go )t gc,mlnm61oes through 10 complete oscillations in 5.l 1n6gc,)motm 0 s. 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 an ideal spring of splb)h+em t;*b ering constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating masb+*h) eemblt;s when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horize0*orzks 5ckf sy ;id g78m:q+ontal, frictionless surface. Thyzedg+8k fk;ms*r7 :qi cs5o0 e object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the total energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with k juwnj27os9, l4pz9t m*n;r mamplitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is 7,4mjt n n;mrkow zjlu2s9 *p9the 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 constanj 6jmlc* r,m8lt 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 ,mjll6r8c*jm 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 conshqz2qdkzis jis) ( s/nyyr/71s) 0cy. tant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 mhs.(yqcy02 s7rs sn)ij1di)/ kqzz /y/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 thgn,--y fs* ohpe end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this sy-n yo,p *gh-sfstem?

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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 ki,vt:w xxtwi nl0*o: w7 c++snn7 xf4of spring constant 50 N/m and set into sit:7ni:x+wv704cnxkt o,w xlw*+sfinmple 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 spodnebq3h-4 c; 7ymo+iring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy of this vibrating mas3 n4ymo7icbdoq h+e-;s?

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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 disjn 1ky) f9ur;d/3brp.tit t0 dplaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. Whtb;dtrj p3i)1kn0 9/ftru.d yat 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 obo 71te d/yhxocf05*0 qwriv rh*/*tcsject is displac5 e* trt 0v ywqcx1h/ofh*i ro*d7cs0/ed 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 objeqt6xol h24 95qq*p noect is dlnpo5e*t h64qo9 xq2q isplaced 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 frouav5hn t+ v8*jxqkd ;2m a spring of spring constant 18 N/m, displaced slightly from its equilibrium position, and r5v8d qnvux *a +;ktj2heleased. 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 fx8bdaz z,cszf.s1a.-requency of 1.27 Hz when displaced a distance of 2.0fd..a1x- zzb, ac s8zs cm 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 vibrates withq pf*q;w8v j3v amplitud;vf3qv* p w8qje 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. 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 stretchesg 8g.0pyov+s cbp* 3ce the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down *eg3oc c0g.y8p+ pvbsand 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 suspendb; aqalavg as-thf.o:k4typp( 7g95s 6iv4e/ed 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. Calculate the total energy of/y4( vft als9bohe;6qap4v ti g5g.a7:a-pk s 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 sus/x/b+.v*bfl:oee 2j kxv 2ruwub a8q6 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 releasxbr6f //eqjab.vek*:l vou8x+ w22u bed 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 obey.w6d tv,k3 ndza.,nak s the following position versus time equatioad , 6ak,3.dkzn vtnw.n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obj4 clixva49g -ld0dx8eys the following position versus time equat4c8g d-vi90j4xal xd lion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 timxvy/f:j6jm/kke -w4l; h5wv s ;co:nte equationje:kf6v;st k5vjn 4:c /h-; wo/myl xw:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 enxb,aui gr)oirw(g-6cs:1ke( d of a spring executes simple harmonic motion according to ag61i( (:g)xribkew- sc,ru o the equation $y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

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74#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A 1.5-kg mass attached to spring with a force constant of 20.0 N/m osibp444v vqm( dcillates on a horizontal, frictionless track. At t= 0, the mass is releasq(4v4pi 4m bdved 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 an/gawx1jv 43s1j* inqq d period s /qv41jag 1q*3wjnixon Earth?

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m long.u/paupe1ts:2 (afc 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 period4i nupy-)xj: +de9a(l pufc z2lg:op 0 of 2.0 s on Earth. 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 long. Whh9oa ia65uye w,g7q92 w9wtwfat is its period on the Earth? 7 fa9hwqo52i,tya6g99u we ww

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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 grandfa-7+t kcpwi/ h(wgm. nnther clock is 1.0 m long. What is its period on the Monk+.ghcn wi7p -/ mw(ton where the 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 attachehh3 s sb,+q.;mzbj1mdd to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter spherehsmbbm, +jz. sq ;dh13) 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 s9- o qbyc/w 7pq3dsni8xze3 -.;tahoangular displacement of 8.0e. It oscillates with aapd3b;soicw/x8s zq- hy9nq .3 -oe7 t 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 frequenckqldl d,2jr*ukww.k,7 3r lwqz-( c a/y of the wave is 120 Hz. What is the a3zj ra (dul-cwrkq,27w, lkl.k* q /dwmplitude?


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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 givx;q5c/v h qs;yueq *p5en time. The frequency of the wave is 120 Hz. e qy5uh cx5;s;qvq/p*What 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" of a wave at a given time. The frequencbk:w*r8 /szq;l gum ia10h3b fy of the wav;:l*b0 zks1q8 im ubw 3hrg/afe is 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 we .y-j hfu9zdbc(4q9 period of 6.00 ms?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the period of a wave wiy9o kp 0fjz jt:+gx4mpn: ce+2th 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 ha3w67h ebr,wp8i.ix gcs a frequency of 12 Hz and a wavelength of 3.0 mxcw3g.i 8epwr,i6 h7b ?

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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 wav1e0upd8es9z vf8 p6uoe that has a wavelength of 3.0 m and a frequency of 12 Hd9pes86evz1 uf8o0 u pz?

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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 th1) 3f gi9hkk:3o xecaraveling 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 undeq5ht09gip2h z r a tension of 1350 N. What is9h5z20 igptq h the wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is under a tension rgs/ u amf;w*,bkqxw03;lb 3xvk+v*z of 180 N. What is the velocxxrw;ub faq0*wks +/kl 3 m;z3 *vv,gbity of propagation 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 witg)dt +mhh0)hh 0rp7 lj ni48lre whose tota ) thj4t07gn rh8d0h+mpl)l hil mass is
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagation of a trans s5on wu0o k s,,xjim,b))x)kxverse wave on a 2.0-m long string fixed at both ends is 200unb 5)o,),x0ojk sk xwimsx,) 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 nhi ef(q60y8qb*wv .y Hz, which one of the following frequenci8 (y w0qe.v n6qifhby*es can set the string into resonant vibration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string is observed to have four equal segments in a standing waveirbtj,nk. a/3hum18i mud*e* driven at a frequency of 480 Hz. What driving , nuek3m airdh * j81b*/.mtuifrequency 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, vi6bwqe v(vf),ky/wl v*i 1k2y ibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What f f)vew/ 2v6*lk wi, kyv1byi(qrequency 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 tension of 20 N. What2 k +1jhor8 r/ngnmrwre 6i,5g should its length be if its fundamental resonance frequenc2n m,hwreg/1rj kn6+g8rior5 y 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 u(p;8b:c-9cut xuyrmys z.p, a string of linear mass density 2.00 g/m and length 0.600 m when it is subjected to tension-c. u(:x stz;b,rup9y8myupc 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 en* h9j 0x,a3wz0sjhn( c,z5bgditq,p wds. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops is form a,(50 dzwqh3, tcnhz*sb9i0 jx,p gjwed.
(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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