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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 cyc+b8fx(s+3 7et* (axoom ydssjle 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 cycles pwd 3uarc:am 6/ehrmbl7d8- *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 equilgsfq .k*;p 1n wio+fsk4)bn 3ribrium point is called the f pfn 3*k.4+g;ksosrq1win) b

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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 tku*b wth 6(.zis at its maximum displacement from equilibrium, w*.z(tkth u6b 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. When the mass passes through thmezu.qa5,xk1c.vy jm* 5n)m ze equilibrium pom,xj m)va*cz5mnzue .1 .q5yksition, its instantaneous 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 dfpyq-e75 40iuew)hvd )x/+aw0osngs isplacement from equ)enw4ao/hd) g u0 y-fevsi7q0wxp5s+ilibrium, 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 sprinf82ou 4-r d9stc5 7io4 (yxvuaz(9w 6jaebtqkg and bobs up and down between points A and B. 6yx q 5t tobi4ujv-2kcz8e(9u9fa7 (woda4rs Where is 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 a vertical spring and bobs up 1qy0+u z 0yvuqg/1jtv and down between points A and B. Where is the mass located 1tuj+g u1 q/0zvqyvy0when 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 and bobs up and down between pob;:eaetrpv4q fx5cu 4 r; -5rvints A and B. Where is the mass l -rq:4 4t;u5c ver5xberv;pf aocated when its potential energy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobe9 .ddrq imgj4o8(cq2 s up and down between points A and B. Where is the mass located when its poten j 2irqeo ddm8cg.49q(tial 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 produ0;je vs(zk-u uces what effect on the system's mechs( vj u-;zek0uanical 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-springzfsm1kc2 i0u: .q(1w xuonfh, system produces what effect on the system's mechanical eneqi0(kw2 ufs .nf:xcmu 1oz ,1hrgy?

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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 constantqz(hfru xs9vg/1 k9a; of a vibrating mass-and-spring system produces what effect on the system's me ;91hz fgk/v rsuq9x(achanical 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 Earqj 8l4 hleh,g*th and on the Moon. Where is the periog4l8,q e*lhj hd 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 constan nt3i.t-9r,t nt*prn5:apaxjt k of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (*xptrantirp j- ntan.:,t35 9Assume 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 of kxfo-*ehbfy- x gw6hq*); :u( )damumchange in the resonant frequency of the system? (Assume no change in the system's spring constant k.hgomwya ):u-( mqf k- ;h bde*x*)uf6x)

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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 systekabekia9h+unkxh33y(a/ uy *0 nec.: m causes what kind of change in the resonant frequency of the0u kix(:y.aak h9 nbah/*eyk3u+nce3 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 consihn i,kz ) ,sg9:ygp4zbsts of a mass M attached to a weightless string of length L. For this system, when undergoing small o hyn k49gszg:bp i,z,)scillations

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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 pendu1)eo+ o;(ws n)m /geif -mrm+vizntf+lum is tripled, the time required for one complete vibratgmtz)w fm(1+++)i e;- ovm io/nfnesrion

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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 mzl r,vw-y, p/,bj:ur bqk5 (bw long. The period of A is T. Pendulum A is twice v kb,(u ,lyb5-pbw:jqr /,rwzas 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, the timny/+om4cx-xsbp7 eyl.r g7(re for one complete vibration increases by a factor ofx(+n7cgmrx elo7ys . -pr/b4y

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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 pendulbs/qdl8ik hss5v3ym 7, n,d6wum's frequency if both its length and mass are increased3 dl, 8ny,ssb mqw/h 5ik7v6ds?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swi fu*k31qh; sowngs back and forth at twice the frequency of simple pendulum B. Which statement is cor 3;* fksqwuho1rect?

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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 Moo+u lrhxyy n(c5aewo);98.lj ln, where the acceleration of gravity is less than on Earth, the resonant frequency of the pendulum wily9x5lec8l.lo) (h r+wayu nj ;l

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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 repre1j;hk *fit2/ s ib)utysents


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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 2qswka*sz3*uu*( pskrepresents


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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 dvr.8dj os341imgd3d c oj( i:represents


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibration, the amplitude of vibration is rr/zc -9b/amp;0 0uuio js1kz 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 equi9x5*ti d g,nso6ezqf**no 6nwlibrium is calle6ws* ei*go6*xn,nqn5z9 dtofd the wave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between successive crests on a wave is calle,gu8o y bhk4wnk - con5eb/-5ed 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 pam k,pn).pjz+z p)xg x5p vigxfq.6h (8ssing a point per unit time is called the wave'v,hpz.g zg 8 px+ pj) (xkpfx6n5m.q)is

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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 waavtwcp5lf.dp ::9 .tw67ahnh fj,n k,velength 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 i,khh fcje/7 q+ncreases. What happens to the distance between successive crests if the speed remains constant? h,+ hce/7qfkj

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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 frequrxflhvb;. h x)qac97 1ency f. A second wave on the sahx h7)arvqbl.f9 x1;cme string has wavelength 2l and travels with the same velocity. What is the frequency of the second wave?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a string of ypc cmz/h-- ;1g3.fn n2kgndd length L, mass M, and tension T. A standing wave is set up. Which of the following/ n; ndk-zd pgg3 1cfn2yh.-cm 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. The speed of kq7,8i bd9ihn 9rt ci4f1pd4ea 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 changern cq9e9t if,ikd dp748hb4i1 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 spepd*bbz ofl 8tmxd7 30r1xy9.l6 ymmz f+ap 4:wed of a wave in the string is v. What will be the speed of a wave in the string if the length is mx3+7 .fyd 4f xpb b1*l8ydwpl:mm960tazzorincreased 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. The speed of fl s652n8 ldend lxgt3-(03xp, nttvb a wave in the string is v. What will be the8lpb3 l2fel6(tt-3 nddt5v0,x nnsxg 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 wave is a transverse wave. As an S wave t59e*zela fpm4byj/;ht.3gvyyc6 w (dravels through the Earth, the relative motion between the S wave and the particlle y5v(b.dj*/wfcz9h3 tm4 ygype 6;aes 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 qx- 4tnsoal.0 l0xn1kP wave travels through the Earth, the relative motion between the P wave and the particle.nkqx ltl1-a o nsx004s 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 isxhlcx /v xfa9h:;y9 1n

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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 4gwy d 3s0au* uy-i1 gyur(j4mthe right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientayyigs4- 0a34mj1d r u(uygwu*tion 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 other5;v 03u-m b 2 hdngulspd5cru*i6 s5au on a string, one is traveling toward the right and the other ug *lsviuc30hb5d-uurd n56 5 p;sa2m toward 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 ote37a4 8ey c rxe4oeq8qher on a string. The one traveling toward the right has a posiaq8x8r7y 4eoqe4c 3 eetive 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, such7uciie6 6m ;mn 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, tz ;z2:+)fspb s,uoo yr*9s rhqhe fundamental frequency of that string will increase by a factor hqr *yp)s ofsz9r;+ubs,o:2z 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 convzmp 2 taqtf0nu,rc q q65r(3im0*c4gstant of a spring that stretches 2.00 cm when a mass of 0.06(c3qgf ti5pm q,4r auc2mnvtq* z 0r600 kg is suspended 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 r g4m+ .lndmwx, p11ty;kaj.cgf3g q.iq2x6u a horizontal, frictionless surface. The sgd lj ,pix2qgk1+w3x4m a.c16;mtyuf. rqg.npring 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 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 alf; eyqwwi nz4 3;vx*s+ong a horizontal, frictionless surface. n*+viq3ew yw ; zx4s;fThe 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 period of oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along 0k*e 6ss(-kbenxyl1 za horizontal, frictionless surface. The spring is i (eenk 0lk6-ys* bs1zxnitially 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 goeszzoiih)gc a*t g0n.52 through 10 complete oscillations in 5.0 s. What is t tzh* i0za5o )cgg.n2ihe 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 r .. 9j klk;cp)cyjo p(zvk72i 3h.v twpq3g4ifrom the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kivhlrqv. pt2 z ();ij7ik.4 p9 3owkkpjyg3cc .netic 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 spvs3m2sr:u t*h ring 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 st :*su3mr 2hvat 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 cpm a*f6y36b;))gyb6domoj t 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.)66 m j 6ycyga;doof )p*tbbm30 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 f:fhw9 /, nqv1xc6zusspring 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,q9vu: ff6cx1n hz/w s 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 c/kasg):pv*1y r4 c wu,bwkce1 onstant 20 N/m along a horizontal, friction)wk/v scbaw4ugc1 :1*,eypr k less 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 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 attal5xyglbp 8 kkrx 9v/+b0)rbq)ched to the end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with ang /8r5y0krqpb)x 9 +b )lkbxvl 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 attachewl2/ 7/y.vzjiajo ew5d to the 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 mechanicjww7z yl5o evi/. j/a2al 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 ti 9.9s j2pc8xvx3sgddhe free end of an ideal spring of spring constant 2ss2d9 cpdx39.g8xijv 0.0 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 itjbk1 4(09wc:0 jqgxvd walu.p s equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had beel1wbua4:p0 c9vg . wjxqj0kd (n 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 kwxhuiahz; .n0 .6n5 .kiqf7j of spring constant 10 N/m. The object is displazkuxafwihn06k7 i ..5n .;j qhced 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 obje6mw17qv.fmx,z.lsx:.s1 sw t7 fzo td ct is displacfww6tq x.11.xmlt: mv sf ,dzszo7s7.ed 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 s:zdzmr d /wo501v5ihe pring constant 18 N/m, displaced slightly from its equilibrium position, and released. Wd/z1d m:zh 5i e0ro5vwhat 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. Irl 7o5gqe5oj1rja: w+t oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity a5wq +egr ljo51: jo7rattained 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. Masn2xfr 4.n nsz7s A vibrates 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 maximum speed of A compare to the maximum speedn7nz4 x .nr2fs 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*s* f+4nmlot.wfl-c 5n coj,*mj)dg q. 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 periof+*lwodccl4 ,nm.5mn s*- )t*j fgo qjd 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 sxnt:05x5 spgz8; p dfqpring. 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. Calculategp508z5: x ;p tfxnsdq 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 s +r xe)cwii)po8 g;7btpring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional dis )7xco;ie rpgwb ti8+)tance of 1.0 cm down and released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motioh )rk-8:abk9of4qiakbm2 3 aln obeys the following position versus time equatio kf m-ar 38 o:a2kb)a4q9kilbhn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 versy9z 9n3kvu .84 mdxmhius time equk3z9 8xd .m9i4vny mhuation:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the period of vibration?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic mot mz::( 5towf hkj5gswd17r,xfion obeys the following position versus time equad5k, (5wft:wjxhm17f:roz sgtion:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the maximum speed of the object?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass attached to the free end of a spring executes 32/m+tyue4949r y ccjri6 d m xdnzl;psimple harmonic motion accorm 4;9z+er cit/d4dj yrc9yu6 3pmxnl2ding to 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 /(wi g6llllyy ,8:qwoez)1d bh(p z *dN/m oscillates on a horizontal, frictionless track./)dq6*lbl8,p1 lg lz( d ( yywzwhoei: 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) W fhi54q,)wqqhhat are its frequency and period o, q qhiwh)fq54n 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 lonrrf-v1ze, wb*ro2os,u1qg;wg. 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 2v,q1ue( eor4 gu ly5yp,fc 6z9.0 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. Whatd3;cawa8q7j mx ub o+ 4i93unj is its period on the Ear; cuqn7jb9oi3jdxu 84ma +3wath?

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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 longu o4g0qbn 1 /af5sy/dv. What is its period on the Moon where the acceleration due to gravity iso gb5/u0 sq41vd /yfna 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 sp y fjklb/8)wn0herical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead? ny)jb0 kl8w/f

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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 initia8)v5dc xq2sxio 1/y whl angular displacement of 8.0e. It oscillates wixcivx5oh ) qsd8/12wy th 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 frequ x-4m6c06icg,n zimsqency of the wave is 120 Hz. What is the amplitude?46cq,6 ms- 0ixnizmcg


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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 tim +j5rnri 3xl5gd+ 7nhwe. The frequency of the wave is 120 Hz. What is the +dwnnhji 35lg5r7+r xwavelength?


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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 wavewy pd5/-l,uvv at a given time. The frequency of the wave is 12l 5/wu-dvyv, p0 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 2g60wq(imtx7 a rwy/ mhas a 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 wav,2;,+ reliti)xgzefnq /)tbq e 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 aowz*eu,w0o fe o y9+b j.n)y5knd a wavelength of 3.0 me+f,o) e zwk5o o9ywn* .uyj0b?

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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 aydl4y 6b 33bku49lnkt frequency of y4tl b 36nykbu9d4kl3 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 ozf- y;rdg)0 prjt2iv;f a 2.5 m wave 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 i4 y.u;mzxum5bc/t9 tjp-8f la tension of 1350 N. 54p i;jf-m9.y u8ttxmz/cl ubWhat 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 65g k ipdjd+my5,oi8 ;n.0 g/m is under a tension of 180 N. What is the velocity of propagatio;+ykpi,dj m5d igo85n n 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 dow7m+ m joxd,;(y as)frqn a 500 m long wire whose total mass q;7sf)mmr+oyj x ,(da 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 fixed gb 4tplx9yg7qs2 :vc1i un1n+at both ends is 200 m/s. Which one of theiynbl9g 1g7xt1v q u:p 2c4+ns 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 4pu : m5kz,yzlr/ zln0fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vibrati,uzz z4/5mlln0: rkpyon?

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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 g+gpoc:14b ( jrl a5x,yoa+ lch/v3rgwave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave wph1 a4:oa+ gbg3 5xyl v +rr(g/j,lcocith 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 sg)-0c*rdz38 ycfojoss uvv m/ 6k,vq.tanding transverse wave pattern containing 3 loops. What frequency is needed if the standing wave puovzvq- ,d*fyrg.3coj vs )/ 8mskc 60attern 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 uiq1 . qc5lcg-zcn jzo8q4cf ,7nder a tension of 20 N. What should its length be if5z g,o qq184jcn7c-qiclf zc . 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 em pxo8q+hi f*w g-:h1pnpy.;q6z; bsdensity 2.00 g/m and length 0.600 m when it is subjep ;sq yz;w:+hp*-.m eb6xfqg oi1hp8n cted 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 bvwfl/r6 n6r7i2 s 2hiw/ p;c6pyqhqrws2u- q 7oth ends. When the string vibrates at a frequency of 85 Hz, a standing wave with 62 2q ri- www2/chqp7sqirf/ v7 n;pus6y6rhl 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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