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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 periodic ;dx1 -glx oqo64kq.jl 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 pc-r: n,e.*bfsj jbx9 ber unit time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from the equilibrium pointdkko ,0 7flm,h42w a0getse( n is called thof,s 2egeh4,0 k7 0lwnmdak( te

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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 displac9 tmqipnihp12m 6v4 zy 5bl:0tement from equilibrium, vt ml m9:0i2hni 1 bq5tp64pyzits 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 tpnq q:q*5id z1hrough the equilibrium posd pinq:15q q*zition, 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 undergoesiz h -tcbo 2 9/k1qoz2+ir9sbm SHM. When the mass is at maximum displacement from equilibrium, its im2 b2 zc9itohbq k r91/+i-zsonstantaneous 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 spd uxcghb 5 c8c(7jpv0-1 qe(czring and bobs up and down between points A and B. Where is the mass lo cqdcx 01u(cv85zeb 7p(-jchgcated 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 bo(fwxms44 -pi p1gop/cbs up and down between points A and B.pws4/i4 cpx( g 1pom-f Where is the mass located 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 and bobs up and down between b;s*o(9rsvu ah9f+ a hpoints A and B. Where is the mass located when its potential energy is a mivh r(fs; boh+a u9a*s9nimum?

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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 tom8v4 7(uj3asxt:mcb i4t /nfx a vertical spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a maximf/mj3(:ta74txu 8v xnbs i4cmum?

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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-spr lcz0 8 4hssniaw;6er*ing system produces what effect on the s0i8 ;rhse 4zw s6*nlcaystem's mechanical energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-spring system produces what effexa*;/unjk djdh;llej,/8hh /ct on the system's mechanical ened ,e8/k*hd;/ jxh n/hjl;aul jrgy?

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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-spri z3gvgxqow:0 )p12) zi:xdw5c lz7 mqmng system produces what effect on the system's mechanical en: wg c)x0dz5q pq3g:2mwv)lx o1zmi 7zergy?

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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 endnn19d;/ml0 wz 6lu zxu of a spring, both on Earth and on the Moon. Where is the period the greatest?x0l6;l9n1 znzuu/ dw m

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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 mah+wol2s i1y3dh2z+ yuon( (ix ss-and-spring system causes what kind of change in the resonant frequency of thn i32( +yz x(ulh1odhy 2oiws+e 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 Mvye *,m isklplieye. n o92.9: of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's spring constant k.)*9:e9m ilen 2,k yivpo.le s.y

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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-,abucg2jt7vs g ;3l1 land-spring system causes what kind of change in the resonant fr, ugljs; 3vla1 7bg2ctequency 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 conqo fllc1*,y8 z)p7og esists of a mass M attached to a weightless string of length L. For this systeqgzf1 ylceo p o,*7l)8m, 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 itq5t2*9 d tfm/ kkhw4for one complete vibrat5*w/d4it t9 kqmk2th fion

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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 A1as 7k0r1(j i2kqh ;yztpqc;h is twice as heavy as parq7;2q;h1c tkp1 zjky(0s hiendulum 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/bih0* ,20p dpx kjsgp tripled, the time for one complete vibration increases by a factop2js/0igbhdp x* kp,0r 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 per) nzg:4wqf -z,jyb g4ndulum's frequency if both its length and mass are increasejz nbw-)z4g4 f:yq ,rgd?

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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 9 lv/cc lfy0lgzs2excf v;;5 6wre 1;ssimple pendulum e 5sfccv0x1ysf6g/el; v 9l; ;2zcwlr B. Which 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 pe3fer0,.ejpw mndulum to the Moon, where the acceleration of gravity is less than o e ,fmr0.je3wpn Earth, 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 reptyzfet-k d.*5/e1t)ffr)il-u)n aph resents


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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. 11-1qas,,vr t -q2 e5ek1 tl2ag*gu represents


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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 repre.1m .l yy9xxkpsents


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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 found to depend on thaatin role66).z 0ft (e

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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 equilib8,aa-crhp6 iw rium is called the wavew8cr 6-iaa h,p'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 .d4 n 5tfktmd ym;p4u1a wave is called the wave's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wave passing a point per ukn()zmq4zo8 *lmc. 8oxy,ipe m d:fd4nit time is called the wave'se *qfymzndmx d :pkc oz8.i(4lm o84),

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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 freque h48 h*v,litag c(w8isncy times the 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 betwsi*1 erna6 j3mj z/gg(een successive crests if the speed remains conszjg /rea3 g*m6n (sj1itant?

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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 frequx oqopx( m:6;k0qok/fency f. A second wave on the same string has wavelength 2l and travels with t6q :xkp(o/ ofok;0qxmhe 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 oyk d ,8u :rpyu0;vka.cf length L, mass M, and tension T. A standing wave is set up. Which of tv u.rapukd 0:,;ky8yc he 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. The 5 j 4z+ijd06qsgjj9.mmkgxp 0speed of a wave in the string is v. What will be the speed of a wave in the string if the mass of the string is increassgmijxjz+ . dq 09m4jp0 5g6kjed 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 lenggyz: a00c2:bd0 xgtu 9l fxb, kffzh31th L is under tension T. The speed of a wave in the string is v. What will bef afx0b0gdhu :,:9c0 z 2kzyxgftbl13 the 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;pdadjpuw3z:*kock0b d 27c - tension T. The speed of a wave in the string is v. What will be the speed of a wave in the s* u;2pp-kd03kcwa7 cddoj:b ztring 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 imj )pz rgxtr6b2pphsm0*- 5p1s a transverse wave. As an S wave travels through the E hxgp)z21-bpm trm* sp 05jr6parth, the relative 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 q+txen3 *0xcc a longitudinal wave. As a P wave travels through the Earth, the re+xn cq0*c3tx elative 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 iqi*oe6*f)n fbs

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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 corky wg : :-j(tlc0wm; p*mlbbe;d reaches a discontinuity whe(::b- ; lkjblw*mpgtw0; y cmere the rope becomes thicker 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 string, on2avsjyjw.ia65 t, de+e is traveling toward the right and the at. + e2jd5wavs, ji6yother 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 other on a string. The one tr2; )ii42sctuw/aj *2pni zrmiaveling toward the right has a positive amplitude, while the one traveling i4s/rmcz2 uitpn)2i 2*;wjiatoward 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 wn9b rj.kt3wd) hen

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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 freshrf7+;rl* f-:4 brsn27 l ) ypfmgqijpxat38quency of that string will increase by a fac+lla*:r7 shgi87f x-pfqn2bfy3mp; rjt r)4stor 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 spring7ys)9fvi : qc9(opr4 fc vry8z that stretches 2.00 cm when a mass of 0.600 kg is suspenyi vz7s:r4y9 )fq9ovcprc8( fded 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 ca575x9jc rh ea horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and l9j7ec 55h xracet 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 co4n ; vr2(nsl;kxwh gx6u( dy3 ad2c0ninstant 60 N/m along a horizontal, frictionless surface. The s xvsan xr 30yhi4d;;(6kd l2(ucgnn2w pring 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 sprit pw,vs)9)1f: u dndoang 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. It takes the mass 0.:)vp asd ofdnu9)w,t1 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 complf9h2(k*e inbb ete oscillations in 5.0 s. What is the *h( kn 9ebfbi2period?

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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 fro gj0jkg j3s4x(m the free end of an ideal spring of spring constant 20 N/m wxk g(3g0j jsj4ith an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 h: .hy)b6z mrovo9jd7z/nb+ lN/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at y 76mh/o zrvz b9)d+nbl:oh.jthe equilibrium position. What is the total energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with amplitude of 4 cm. The energy is 8.0 J at this time. ;z,hsmv:) ivz /s (gpg The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. gs/ghis(p z: vmz) ,;vWhat 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/m along a horqgby 4wr(vuc7x sl0, /izontal, frictionless surface. The object oscillates in simple harmonic mc704 rwyvx/ulq, (sgbotion and has a speed of 1.5 m/s at the equilibrium position. What is the amplitude of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring confw wwg:q 63bp* c1eaq5stant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion 5qqwpf:w63b * cgaw1eand has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of nxv eicu8sgv)d-n0 + z1k2 l.gspring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical 12.cz ludskx)ig- vv+0nen8g 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 horizontaq u*w03+q ypbntr94hr l spring of spring constant 50 N/m and set into simple harmonic motion with anp+ry0tnu4 3 rqbh*9qw 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 idr+h,co54 p: dsjosc0nwl zy(b(+:wjjeal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kineticcss:jjwbph0,:ozyc 5 (dn+j4l r (o+ w 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 di.7 otqd0ea94ruq.zm osplaced 10 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 displaced on.74qoro9 u dqamt0 .ezly 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 objecy40+t nogoan4ev90lh t is displayon9hev g 04n04a+ tolced 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 t)5 hbzua8,(ltmt jvk:o a spring of spring constant 10 N/m. The object is displaa,h5mkz8b:t)tul v(j ced 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+;nzsx*e6 nrv;w st 2u, displaced slightly from its equilibrium position, and released. What is t *s nr;;uenw6sv+z 2xthe 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 frequency of 1.27 Hz when dr 11l0sknv/ kwisplaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the mass?knlk1w0 s 1v/r

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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 spron81eyn9b)*vlnn / r g6xe. ,frfl4bgings. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cbn lr)n9 /x1 og6.8yg4* bfl,nrnef vem 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 e)3acoup gmm dl- t+29cquilibrium 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 uto9a pcdg)-clm2+3m. Calculate the period of oscillation.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a springm xd()*y8yk 2fse f/kj. In equilibrium the mass stretches the spring 2.0 cm downward* m)2es/d (yff j8xkky. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. I1fzqot+,ai4i,k-agqod+:s h n equilibrium the mass stretches the spring 2.0 cm downwtaoa4-kidz,o+q if,:h+g q1sard. The mass is then pulled an additional distance 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 mo(6o 2d cpjvl; *sk6bqttion obeys the following position versus time equati2(6kjlt*pvoq;c bd 6son:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmo5*k rmw/ un-u fhfzf7j;;ci pg ;g19qqnic motion obeys the following position versus time equatq; f5f;79 rpu g ;icum1gqfk-nw/j z*hion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 positb+ xjaq90 kmp4ion versus time equj qp4mab+0 k9xation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 simple harmonic motion +-xcg/dw b+qe68/wb s q+vlrr according to the equatio+d+gb br+6wqxwsrecl// -v q 8n $y = 0.50 \; \sin (18\pi \times t)$ 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 wpv/7b fw-rcyclvm0f6 qp;wwb * -18ofith 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 is, the spring is stretched by 10.00 cm.cpb qf8yww w*v6 fbo7l0cvfmp 1/- r-;)
(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 its2xzd 4j mvvpoyp2,)u;ko bb,+ frequency and per;j),,boz pvmkydupvx4+ 2o2b iod 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 long. What is its period on Eampw 8d g/7 qr/25p9, fsh9xnw ncj mbd6qse76erth?

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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 le jwf7m 8*nag0uwom*px73bx(u ngth?

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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. Wlu9dd:caer5 -hat is its period on the Eadc l5-9ruaed :rth?

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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 ))zwc(y ,8j* za xhpny1.0 m long. What is its period on the Moon where the acceleratio( nyw c*z axy8jh)p,z)n 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 -exk i3r-gjee qjqfj 0t8xb u5-65 kk;0.25-kg spherical mass attached to a massless strju8-e6ieg;jr xek- t35qq5f jxb k -0king. 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?

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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 brw4ml d0e: x-:etp 4,fa/z xihas initial angular displacement of 8.0 e,t 4rzxifwbm0ld :exa-/4p:e. It oscillates with a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequency ogh8r3 hh tz9m*epij* (f the wave is 120 Hz. What is the amgtpmi*(3hze8h r h* 9jplitude?


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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 t5cz trqb75 90 xs0n7j h * 7lb0o2u3mwfxhvojtime. The frequency of the wave is 120 Hz. What is th5xtnh l23c7otob 7x7 q00bfm9* u sj 5wjhz0rve 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 "snapsh*(ny: cl;x .6whpmieuot" of a wave at a given time. The frequency of the wave is 120 Hz. What is t.*(xhiel c p:mn;uy6 whe 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 hauiubmx83)az +t w 5p7ns 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 wave with a fr,gyww., /kdyin vv) *wequency 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 frequenc1 7)xjpb mz5bcl ;pw4py of 12 Hz and a wavelength of 3.0;cm175zb l) pp 4wpxbj 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 and a frequency uursfa ca() 29of 12 )cfuru92sa a(Hz?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a 2.5 m wave trvu*y8fvwor) 2pmtl 0 )zcs(2maveling 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 dea6qs.z wr54m o+ak d6pnsity 0.0050 kg/m is under a tension of 1350 N. What i6 qr m5w.azp+ksoa4d6 s 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 of 180 N. hliujt7 ..1 nh0b(40dcnbrl bWhat is the velocity of propagation of transverse waves along th0 jh4u(indlt bnr1b h .70l.bce 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 abmolfr4q q9vlhe,*fc .7- w5m is traveling down a 500 m long wire whose tot,fvlc b*a-l7eqo.9fq 5wrm4hal 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 propaga k kr ld0hkh2quea *5vzr5i,1o:q; w+ation of a transverse wave on a 2.0-m long string fixed at both ends ia*o5;+qez ihkvkdwr l0,uaq5 h1r:k2 s 200 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 Hz, which one of the fokk fn8xfk4/0q llowing frequencies can set the string into resonant vibratio qn04f8kk/xf kn?

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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 s(wh1fj2cz:1: kz u gi3evk1xqegments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equaku1vc ( 1fwj :eg1ik:x3zq2zh l 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 ,x +zf o ne*g8f ysndf.uk482ka frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequencf4s8*k,+28dff no.z nkxug e yy 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 202q(6i2rbb:hzfyvwc .ub -exb h)r * /m N. What should its length be if its fundamental resonance frequency -r.rbifecbz6 hy/m q*vuhbb 22x:w() 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. wc+,1e rs,i-x7eooa j00 g/m and length 0.600 m when it is suwse1ce o+i-r ja7o,x, bjected 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 string2)sbtu;q8 a nr9sxsy6 vibrates at a frequency ofr8)y ubsaq2;9ts6x sn 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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