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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 processvup 7;sf2 k3l -cgw.ke 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 of8h isx / (ygub4aafd(9 cycles 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 displkj ,5msp c.8nhacement from the equilibrium point is calle8,jm .hkc 5nspd 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 underl;7 ,rn/h;/iqoqglfh goes SHM. When the mass is at its maximum displacement from equilibrium, it7h/fro hiln;qq/ ;, lgs 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 ma1rlswoz j(-hd em 04q /2m+flkss passes through the equilibrium position, itl-/4e kdjq smz1(fm 2hrw+ol0 s 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 undergodrrb0xq5n m6 :)mo9qxes SHM. When the mass is at maximum displacement from equilibrium, its instantmd:ro 5xn 9xb6m )qr0qaneous 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 to5)x qeoldznt k;p6(l . a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinoe ;6xqd5 pz(l knlt).etic 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 and down betwee)2qo +zpr c;, r(xqxdkn points A and B. Where is the mass located when its kinetic energy is a maximum+2(;ordx p),kqzxcqr ?

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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 points A anoo4h,oa0vo /fd B. Wh, ov4o0oo/hfa ere is the mass located 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 bobs up and down between poi+g (i6 t(xcm bbke.q7qnts A and B. Where is the mass loca7t6 mb. k(bq gqix+e(cted when its potential energy is a maximum?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the amplitude of a vibrating mass r,20l mhh5-sl)zuj ub-and-spring system produces what effect on the system's mechan0 5jzlsu-mr u l)hbh,2ical 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 systemc ll5xid :2(fdq3vy)r produces what effect on the system's mexl5) 3d vrfc yi2(ld:qchanical 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-spring sy:,rk fzvvhe 9jl,/se :stem produces w: l ,jrvezk/h,e9f :svhat effect on the 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 Moone)a*co,mad1o7v2 tn vum;l l1 . Where is thec 1l7 )m,aeadmunot 2vl *v;1o period the greatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k of a mad0.*a o1sd ipdw9rr:su c;7,eozmz;kss-and-spring system causes what kind of change in the resonant frequency of the system? (Assume ; ,. sep:7r1c k9odzzumrs0id*wo da;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 on+0+cm1 1 -bu o rxe4e)gbgghmass-and-spring system causes what kind of change in the resonant frequency oho xg 1g0g)bb-e rme+4on+cu1f the system? (Assume no change in the system's spring constant k.)

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude of a m uh s6. qkv pd/1atsww 2t5:z :bv,aao402pkiwass-and-spring system causes what kind of change in the resonant frequevtu 21p6dkh,w2 :ap.qw 5awas vo /zibs04kt:ncy 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 of lengte7mwgy7gn+n1 h L.g+ngy 7mn ew71 For this 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 tr 3s1 zre*g6pghipled, the time required for one complete vibrat*gez613h rg spion

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and B are 3.0 m long. The period of A is T. Pendulum A i( ov0j 0(. rdftfa7xuis twice as 7 0oa (f(vfir0tudxj. 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 time for one comple784 lky0i i rezi2i84 e0ztlzfg2e ,qzte vibration increases by a fac7qz0,k2ilzirf e44eie8 2t8giyzz0 l tor 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 pend(zbj31sx 7vdx ulum's frequency if both its length and mass are increa(7zv13js dx bxsed?

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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 t w:)u-ss 6pk*f0 hsmvlhf:p,ihe frequency of simple pendulum B. Wmsh0wss-p) lvk*:ffu 6,p:ihhich 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 pendulw6hiov jorq;2 iby(/6um to the Moon, where the acceleration of gravity is l y/(bw i j;ovirq66oh2ess than on 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 repic*h*9t no..st :x+ipb+ flitresents


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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 representj0 k j3miw4wx,s


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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 represen zpkx;1x 7 gau:rtb* k2;l;wawts


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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 d cskyj0h 6j9/qk*pml3dfv3w41gfr: 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 wavezspi(f 9ll2bn5 a 57xv from equilibrium is calledvp(xz n 52bslfl975i a 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 +gb8 *z8 eomm:bzfk9 kcrests on a 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 passic8 s05zjj7c tkgr*b) ong a point per unit time is called the wave' 8* rscgojkc5bzt7)0j s

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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 the wave'utcc.;8k yp)jkhx ;-u f twloh2jv4,3 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+s r2wi it,81ngqj4am successive crests if t1ti,wmi 8n2 gr s+4aqjhe speed 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 s.bp.xy 7ssi hh8 16yjsecond wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of the second wavesh hb 1s6y xsyp7.ji.8?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a string of length lpkhx 7lu/al:3y cwynt.p k 5+watu20( zq*6 mL, mass M, and tension T. A standing wave is set up. Which of the following is true?h+ n z*/xlmk6:tpt70upw.wa25qk yuy3a c( l l

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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 az *ki q2zz5cz-nd length L is under tension T. The speed 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 increased to 2m, z5c zkqz-2i*z 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 Lcem46fp9 4gup is under tension T. The speed of a wave in the string is v. What will be the speed of a wave in the strinp uefg 4c46pm9g 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. The sp2 kr e 63 dgzkj4lpay6o7vk v3g2fa+fuc7 x:+jeed of a wave in the string is v. What will be the speed of a wave in the string if the tension is inv2vkf l eaf+c+d2o uk j:g xy7ja3467zk g3pr6creased 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 tran 0*jk0gyp05mdy*j9.p f lyteosverse wave. As an S wave travels through the Earth, the relative motion between the S wave and thg*lj09. pjytyey0omd5p * k0fe 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 a02ieg j7mzc7 jrs n8l* P wave travels through the Earth, the relative motion between n7r87ejs0gm * j2zcl ithe 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 wavjc1gm (5ni-o m l-fh(ce 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 discoi pui +un 2(s3ietx+0v,a fc *.dhy)lintinuity where the rope becomes thickelci*d,iiy fpai 0u v)uhet+.x3(n2+sr 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 p/bt :j/e-1v)axp3iqq zeryr 2 ass each other on a string, one is traveling toward the r/3vp1ra / r2ji be)e-y tqxq:zight and the other 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 strin zxxtb2cf3a1tq9uu8 9 g. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. At the point that they occupy the same region of 1acttu2xub9z 3x8qf 9space 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 w2zhl*7dz .y1ckv r e5vhen

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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 thav7es1 ;k-ohj-2 el mhbt string will inco -bj7;-kvsh21eemlhrease by a factor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring constant of a spring that ss/b608h9ea.fczd8kz n9dqv utretches 2.00 cm when a mass of 0.600 kg is susp b./8c9sv0 8ahuzdenf96 zkq dended 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 azfd9n:e ;a1u(b d ey+glong a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It:1ez+9ude ;d a gnfy(b 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 ty9)pavawn vwexu 141z;02x uuv 1(mvhorizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. 94nw(1vzuvuxmew 1 y1;0vt au )2pa vxIt 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 beoy 3d0azdqq dev7hx3)87r .N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the masxraq7h b3e.) v78qz0 y doe3dds 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 ae:czqgms xoiz2y ,x: k2* 4j4in 5.0 s.sy qc4 2:k, mo*zg:jx ea2i4xz 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 ideap57 9n-x q;p8lp 1-ilj);egufff exsprjq 1 z;l spring of spring constant 20 N/m with an amplitude of 0.30 m. What-1ru;q gxp5f;il l8ps 91xenpz-ff7;pq )j j e 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 gv5uwvs8/ tbt2zl eme;i8yb+*- t me( spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and /l ;t(8t imemg 5u*b- 2wyvte +zb8sevhas 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 amplitude of 4 cm. The energy is 8.0 :,21.v;w ,zmue x5eg k coj;o5 fxxykmJ at this time. The mass is cut in half, and the s.m,ezc jx25,;omgwvu;y5 xfek k:1xo ystem is again 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/m f 0 vp2 b1f:0tcn:haizalong 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 a b0htpfv2 zf :01ani:cmplitude 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 spring1)vl6lac j 0*6wbwkor of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in sim1wla c*vj l )6rwbk06ople 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 attached to the end of a horizontal spring of s-di/vxew :po9 pring constant 50 N/m and set into simple harmonic motion with an ai/xvdp ew-o: 9mplitude 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 ofh,bm8.v1nbss 283x8l;vrc 6lgeemfw a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitudelc 3 gs.hl, w18evfxm82n 6;ver8bmsb 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 enzo1de,.en1 lrd of an ideal spring of spring constant 20.0 N/m witzeo1ledrn, .1 h 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 sid w+6i1*i:*q ne nfsoo24pvpystem is displaced 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 only 5.0 cm and th infeqd*:6i1p + i*spwo2ovn4en 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 o,g gk4ir3okp3 bject is displa4krk3 g,io 3gpced 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 gfewo2 5 hp+ or 1b)f 4+rs2:f,)mrootgsb7tdspring of spring constant 10 N/m. The object is disgob+m r wo ,ffp5t7+s2ethsgdrb 41 o)or2:f)placed 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 sp gb(qlx /nxb6jw 5 vl82iwaf 5tu3/tl*ring constant 18 N/m, displaced slightly from its equilibrium position, and released. What is the tw q5a/x6*n3i8(jfbu/lxw 25bgtllv 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 m nusr:n0xa)6p7,-5nw;yb9dr 0ms,lfif g kqoscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity ans:iglk f ux;r 0,psbn0)qwn6m a79rm f5,d- yttained 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 with : b5u*c:n*xb b8ait wnamplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a freqw t:n*bn:*a cu bxb5i8uency 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 sqdulnbqj(ip ux- ,s5 39qz,l 6tretches the spring 2.0 cm downwaq zj 6nlq9 (,ud5uxq,-pb3lsird. The mass is then pulled an additional distance of 1.0 cm down and 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 suspended on a spring. In equilibriumyu5ggw +ot1 g2dshx((bsh 60n the mass stretches the spring 2.0 cm downward. The mass is then pulled an a02 gg+ bxhh d(ynos(615t usgwdditional 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. In equilibriu:xf fj.p02ijr9qckq. q+ oyj,m the mass stretches the spring 2.0jxqfi o ,p9 jj2qqk.fc.0+ :ry cm downward. 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 motion obeys the following position versus time ed 7t ;cgyft1 kt /ton1s--ntv;quation-- y tt/ f1ocgs1v 7;ttn;dtkn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 positionx*y;y)uow).kzk)l c f versus time equat)w.kcxu ;o y) yzlfk*)ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 *rw7*sv ty5*ysy) fkfre2 le* dc9s2uobeys the following position versus time equay*ysk c )s7rv2 f*d95wl * s*ute2fryetion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 s;nwln0f oio fy0 kt6,.imple harmonic motion according to the equation no ifl0nfk. w0,;o 6yt$y = 0.50 \; \sin (18\pi \times t)$ 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 l (1i 1va2xyghforce constant of 20.0 N/m oscillates on a horizonta vh1l(2iaxy g1l, 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.)
(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 fre t22thhcx p./my)z1z pquency and perix /ctp2.hhympt1) zz 2od 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 u(l4r a zz. pi62 za)2ctc7qxmits 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 periodk s:(snst p0 837-e3vjvfesdb 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. What is it jqo u)5wu;wj+ji3 0yws period on the Eartuy;i+0o3ju qj5 www j)h?

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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 longbat/; :myh3jl . What is its period on the Moon where /ym j3:t; labhthe 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(ix9 2oqe4 e6ry,pkoj mass attached to a massless string. When the mass is dij6rey , 24xp(eo9okqi splaced 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 ub 5vl.peflkm8 ;cr/ 7o fwn5.mass has initial angular displacement of 8.0e. It oscillates wie7l;vn8uclm5ow.bpfk/ . 5frth 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 give 4o5sc/gsv hax 8 ,l0yfozd**un time. The frequency of the wave is 120 Hz. What is0h y/f84lvdu*sg5xocas oz ,* 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" spe r xe+0twz;/xpz+h (..8rw:jwmpi of a wave at a given time. The frequency of the wave is 1ei+z8pwhp . 0j/rm+pw ;x:r(xw e.szt20 Hz. 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 frequency of the wav 5d8ivz ekzrr;u*4:lpe is 120 Hz. What is the wavez r:pu*4k;e lr 8zi5dv 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 gwuz0w .tn6xefmr,g d-2+u 5c*j;tl z 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 frequency of 19 nt4 pu6n/pfjdj :2xu500 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 1ad,vb k45 mhwy;q.o/)9 xflkm2 Hz and a wavelength of 3.0 m?ma obk. ;d/ q)m,hykxvfl4w59

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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 hakd75vt+pn 2nes a wavelength of 3.0 m and a frequency of 12 Hz? 5nv+pkt2n e7d

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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 kcce)6l1yzr . 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 a tensibeq.d7( ke3h fon of 1350 N. hkb ee3f7(d.q What 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 den k kk hx;9*vu;2.ru.d3a/ eit2symy42 a ngalusity 6.0 g/m is under a tension of 180 N. What is the velocity of propagayu.4m/du uk9x2i lkka22n e;t a;.y gsra3 *vhtion 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+w xkpk;s* g58s oaja8 traveling down a 500 m long wire whose total mas8kxa+gsw8 p * sj5a;kos 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 propa f2) e iy(t12mkeo7npmgation of a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one o)1 mk 2m(fo2tpi7 eynef 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 b,qog8e.e*- cdp.-u mzwkys+ 87umznfrequency of 500 Hz, which one of the following frequencies can set the string into resonant vibrati*+kmmubn8ey gs z q7-zu,. d-8oecw. pon?

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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 wce-n)+d)myw 1-ainre zcd;x(l(u 1ek ave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with fiv c)m)- kl;nw1ce- de(a iz(rdeux+1ny e 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 mqi8j(rykl5*ufy wk**)kw1r 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standlw i k5wq)j(urk *m*1*yky 8fring 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. What s-( g(wkfc3uq r(toq a)hould its length be if its fundamental resonanceqcq 3u-ft(( arg()kow 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 gmkq) k0(e +4bldl i6aof linear mass density 2.00 g/m and length 0.600 m when it imi+gd(kekb4q6l 0)l a s 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 end87 z*avd h :tx7/tmcavs. When the string vibrates at a frequency of 85 d *a/ztvmt8:c77vxah 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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