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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 lijqjm j/ mme o1;s56djuv54i8*yxa+of a periodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number of 6*lp n:e v mf4 :j1d/gby(y rznpm2mf8cycles 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 ei(py,js+f gmfk 5t ,w)quilibrium point is cafpsjf)5myw(,+tkg i ,lled 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 4h7o :uyuin d 8uh ug:c9l(w3cmaximum displacement from equilibrium, its io g3hnu( 8wclcu h7u:4:duy9instantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass passfnwy +ie 2b-fni9c/g/es through the equilibrium position, its instang2iync-/f /+ bn9fiwetaneous 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 at maximum dv 4a8v. ccgav1a1um- nisplacement from equilibrium, its instantaneous ac mc1gavcvuna4 81- .avceleration

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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 0u(iv5 e rn+ ge3xh d9:f5u :kbaxov-wup and down between points A and B. Where iux o3hvbg0ea x:vf +-r5wde:9iu5k n(s the mass located 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 7jn)x8s+ uuwwa vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a suj8unx)7 ww+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 and bobs up and down between poigfd+ 4 vhm5b 5)q+pfo 9y,pckjnts A and B. Where is the mass located when itsb q j,fp pk5yc9+gm+5hvfo4 d) 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 downzd)05at3l 7ikk)yb j*;vor eg between points A and B. Where is the mass located when its potkb*j)v 5tgol3ey)z7a; irk0 dential 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 producezkqaf,na;b0. r 0yjq)s what effect on the system's me za0,n.)fqykj qrb0a;chanical 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 vibrat*r--n jhaweh:ing mass-and-spring system produces what effect on thhw*eh nj: -r-ae 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 a vibrating mass-and-springc+4wm,tyt :t *eiks4 b system produces what effect on th4,wic:ksb+4 *ym tet te 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 on Earth and on the Moon. a03d9 6qh3 zwcqle,; njul wb7 Where is the period the greate067,lcu3 ;l bznjd9q eq wwh3ast?

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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 vs 9if;s ,xq. p;i9*(dr wn :uqyxdif;system causes what kind of change in the resonant frequency odiu;fs;y*:;nd(qr9 9iixxwfvqsp,. f 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-sjp ;x wm+mozzw v-nl)30k4:m bpring system causes what kind of change in the resonant frequency of the system? (Assume no change inzbj4w m-m; 0pxz)+mowl: nv3k 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 syj,lu+ dycyfk2c-5,1 rwjy 0vzstem causes what kind of change in the resonant frequency of the system? (Assume no other changef+c5zyc 2wkv,d,y0y j1 u-lr js 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 of leng73p9js s ercc.th L. For this system, when undergoing small oscillationcc esp.3 79rjss

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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 zf701 n svh9kfis tripled, the time required for one completev f9nkh7fsz10 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. Penduluh8 j wyd:cd ;q0ms2 :qhh*pyy0e,r9x xm A is twice as heavy as pendulum B. What is thesqx2pdy q: :098crymd e,;yh 0hjh *xw 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, the time for one complete vibrg 9hrij, oppp;.gcee nar(ez) (v .x58ation increases by a5 pepra (p9j.;()g. ozgex r8v, chien 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 fremfh6+87huifh3*oq6sgn nf6 c quency if both its length and mass are increasm6f6on uqf 8c6s+ hgfi3nhh7*ed?

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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 simohpm6642s 0edjw :dpn ple pendulum B. Which62m ho4ppwes 0jndd:6 statement 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 gravity 8.ryvqrij 9( oty11 ;a bus,fjis less than on Earth, the resonant frequency ofuryia9 ,q 1ftjv;. y8rjsb o(1 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 represerp )qi7)i*nno( tizl x6 v q6,i(g/hmys.3yernts


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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 represents fqccueo owe)1mgo046e 73qh/


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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 represeyg-)8sz yey (rnts


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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 ampl6kl5gp4;y44fi,b,vz c j/ uz4 qncxrlitude 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 displacementuzjrb3lb1yv4rx0w 7 ; of points of the wave from equilibrium is called the 03z417rjbxy; bl uwrv 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 wavet*r 8lr9ki*n v 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 til-kvlqp2/ e3b5x oe 8i4a7uxdme is called the wave'sblil3q e/5pxu 4vx 27 o-aked8

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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 malv o.ge6 c(u 8z)(vbis 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 thez 9hs+*cf)o kv distance between successive crests if the speed remains9*oksz +h) cvf 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 -,s7i 7hqf 6d2 j vlbs)ipfcga7-e +vjl and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of theg7aqlh-b fj2-+d7 vse,v)s7j pf6cii 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 stringb0kpy6f4ong0+b vv 7g of length L, mass M, and tension T. A standing wave is set up. Which of the following is tpb kyb0v06f+v74o g gnrue?

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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. The speed oj h0gl. 5vc wdc0ax;,tf 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 increased to 2m, with no change i0jh5 agw l t;cvdx0,.cn 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. Thkwlu a:+xp,3nxg 1f imhe)w/) e speed of a wave in the string is v. What will be the speed of a wave in t ) , 1hgx:k an+w)mpwi3uxfl/ehe 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 ; w(zz0pso7kp is under tension T. The speed of a wave in the string is v. What will be thzp 7sp0kz(w; oe speed 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 waz2 giry)ok81ux7hgm f fr55d*ve is a transverse wave. As an S wave travels through the Earth, the re rfgx) rfkg*5ziu2m 1d85 7hoylative motion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is bo pmilj/q;67a longitudinal wave. As a P wave travels through the Earth, the relative motion between the P wave and the pao7mpjql 6/ ;birticles 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 waves9/w do 8pk-yw9xk62ai(yvhv3a l0 gu 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 reaches a discon5j.- a qnhn *myqi9r3*vqh7wx tinuity where the rope becomes thicker and heavier. What is the orientation of v*qnjrq9-w hh.m n5i*a73 y qxthe 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 amplidpk a ju6;7jv5q-q vq6tudes pass each other on a string, one is traveling toward the right and the other toward the left. Atq56u7kdja v6q; vj-q p 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 travkg*:dlyzdy5 0eling toward the right has a po y5d 0*yld:zgksitive 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 wh, sz5;ums* twltqh o23: ik:ickx5/ lxen

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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 violimz4er4qmn4nf*q y 2:w h4 ,evin string, the fundamental frequency of that string will increase by a *2hvm4q4:rnim ee4,4qwyfnz 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 constai ajwqd8 v0,1nnt of a spring that stretches 2.00 cm when a mass of 0.600 kg is n1v ,ij8awd0 qsuspended 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 ht.u)g g)uzz0i7xl/k spring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. g0x g)i/zuzu)t.l 7hkIt 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 N/m along a n tr7w26vu *j)kt j;qd -ike,yhorizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes tvt t7*kj,w;i6 yneku -rq 2)djhe 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 sgqt8dj* a6otd4k sxz5f* 8w-opring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass8 jz6d d8xqook4f- *5twg*tas 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 goes through 10 complete oscillations isvlccl q*q;5 7g5kf2(jla+k j n 5.;5+jcg25k qqv jlafc( skl7* l0 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 sp+hxx48w;)gf yla211sqxw cq q ring of spring constant 20 N/m with an amplitude of 0.30 mas;wfc11qx2g8 )lxy4 h qqw+x . 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 spr8knh/)3 s-nw t +eb sgzs4h3pping 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. Whkp )t/ s hb3nhz+pw8sn3 s-e4gat 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. The energy is 8.0 J al;foeln dfl)1v; oj6b ,yr/w1 t this time. The mass is cut in half, and the system is ;woll j nev 16 ;,y/lbfrdf)1oagain 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 spring of spring constant 20 N;q/n(co2 sbzy uas9w- /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 aco s-9su/z;b n(2wqyis 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 piq0k t4,1- wfvvb -zealong 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 energy and the i vz t-q4,k10f vepwb-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 wi we vk9e9q.un-b1iqu r) j25end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with)k wui1jqbir2neq e 5w9-u.v9 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 hi y;np 2qfogzln5/w9 *orizontal spring of spring constant 50 N/m and set into simple harmonic motion w wnf*ly2i /zg5pn;q o9ith 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 dk9) vt3hir; z 0-tz upq-dbw:of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic en zp;uwz-9tkvqi-0hdd t:3b )r ergy 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 wo,owvs nfye9/om*dg28(d) gk3p, xr10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displa d 2ydom,k)o3wr(9gf/pn8evgs *w ,xoced 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 ,)0sr,6n g sjc gkau/,2 ar8vltuwfq6constant 10 N/m. The object i,uan)tjq/ gl0c rwrk 2v8sfa6s6g,u, s displaced 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 / u;-hje+hxn7,r2s vdxkcsje+y1b s :spring of spring constant 10 N/m. The object is displacedceb,y x;:x hs us27/d1v j eknr+hsj+- 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 kh -b /5immy3kvatp/;spring constant 18 N/m, displaced slightly from its equilibrium position, and released. What is the frequency of its vibrak;m5m3//t pkva ihby -tion?

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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 frequengx18zor ys28 hz*uii0k(agec98lj 5m(7 gzo pcy of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. Wzh 2 lzu88(ogikczj im0ex8g519g(* asoyp7r hat 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 vibram0luy3 /75/w h9a.cikgw iyst bae/n7tes with 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. How does the maxitcl/.7 w i/ayms9y7e3 h /gbwian 0u5kmum 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 4ci8 4)f;og4rx(uegfk -apgwspring. 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 thp fui8w -g4e);4(4ac xrgogf ke 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 springl 8. 0ybdca1ayf wc y).ng1om8. 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 th81.yc 1 .l0w8ynbyaom) cdafg e 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 suf(unq 9ib6ovml12c ;cd) c1*;n lukzn spended 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. Write down its equation of mb2nmoc) u;cfk*(1 qvn1zc9 nll u6i; dotion.

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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 obe3jj/vn c 5x0 5sb2zsvfys the following position versus time equation: 5zs3vn/v0x2sj fc5jb
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 moiwjb t k/d,-jm- *p;.gijlsx(tion obeys the following position versus time equa p,k-(bmi- xg;j*l/dij. jtswtion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 time1p g /nzlt4qsvjr )f:4 equatio )znjlq4f1/ t4sv :pgrn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 m+ qwxt/7wvcstkk 4iz na ;(wu/yoz0o;0 ) *xnof a spring executes simple harmonic motion according to the equitzno0/s x;t4/(uw 7w*xcy)zq vankwmo;+k0 ation $y = 0.50 \; \sin (18\pi \times t)$ 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 lh9m,d2y +4xc bzmyq6to spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That i yz24,cmb dy96+lqxhms, 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 cor /6 jd;auu4g cz)(xvymplete swings in 8.0 s. (a) What are its frequency and period on Earthuydvg() /zux;rj6a 4c?

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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. od2k/vxik+ :n 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 r e/,le( afzl3xfvg-9length?

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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. :0hxx8 yzrg +hhpz 3mk0z1oy80 m long. What is its period on the Earth?+8xmhp 10zkyoh:r3 xz 0yhzg8

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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 grandfath:jul3m ac.x:v er clock is 1.0 m long. What is its period on the Moon.3c :lmjv :xau 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 attachyeh6f*ejvm40rr1 ov-7w lc6ked 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 kr-6y407h *vrlve6c weo1f j m(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-u( f7a/g;hm bvr;8a seq82nc tg mass has initial angular displacement of 8.v8aa her/;q8mu(2 c 7n;fsbg t0e. 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 azlo:o y vt3gorc/vl ;q3 ;k-bz5 *;xymt a given time. The frequency of the wave r*omzcyk gq:zx; 5o bo ll3-tv3; v/y;is 120 Hz. 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 the g1 x2 2bdi;op: tb gjslo7+m9owave is 120 Hz. What is the wavelenmx:9o7 1o+ bdgo2sjgp 2 i;ltbgth?


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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 frequencxn)+ epxfysr; ,8, zr9v ,cusiy of the wave is 120 Hz. What ir+r9v,sx ,,)cyipu xsfn ;ze8s 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 6.00 ms?.* mt(v 9*qjj9bwf bbg

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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 abl:ms6e19 ab2cvt.n znz 2/q i 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 if97n ,ssihf4unrx-t+a a wave has a frequency of 12 Hz and a wavelength of 3.0 mxt+ as9ufnn 4-i7hr s,?

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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 waf2scem 4zw2 g2n1am0cl wf +e7velength of 3.0 m and a frequency of 12 Hzmec+z 7g mwfnafsw02c2el1 24?

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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 wg ubs5j f23*bb2ywb3pk lyh.* ave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/m is under 6nkla eu0 1 6n*ry,p/ja4ab rba tension of 1350 N. What is the wave speed?n b/rnubj*l01 p, 64aakea6 yr

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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 tens,zxs kpld5 v3l( oc3:bion of 180 N. What is the velocity of propagation ,3(p blzo5csv3 : klxdof 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 (uit +z8vca +4i k -m.tj,gbdwis 0.500 m is traveling down a 500 m long wire whose total mak4 b,+ v+8wu(zttiacd-gi.mjss 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 1n *qu5ikd :oya 2.0-m long string fixed at both ends is 200 m/s. Which one of the folloi1:ky5 n udqo*wing 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 onmikew 2w+-au b 7x(eo(+vjk6ve of the following frequencies can set the string into we2 e7v(+ux+jibo-m kwka6v(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*fjx r9qg) d s rs* *k(ybty)8viow7-s segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wavervdk)fr(bx9 ywts8g *is 7)ysoj q-** 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 )v oi xkg6g m(6+qybx(y*v.rp of 12 Hz with a standing transverse wave pattern containin) mg (r+ 6ygo(xki6v*xqvp.byg 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 te . bh xo,9exkc*70zhi -mu-kbension of 20 N. What should its length be if its fundamentali7ohce b,zxu-e.-bk90 *khxm 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 density 2.00 g/m aorl.utx gyc1) l00pl6 nd length 0.600 m whlt pl x l.)ug001yocr6en it is subjected to tension of 50.0 N.

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99#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A string of length 2.5 m is fixed at both ends. When the string vibrakt*d+uh n8;h+so qti *tes at a frequency of 85 Hz, a standing wave with five loops u qis++n;t8hk* *odh tis 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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