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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 proces53(xctspxup; mh0 ss5 s is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number of cycles per unit time is calfhup + d7sy:h9ss-6zbmf - p0zled 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 maxid j, ;**ajrauh rkjcnv+3, a1vmum displacement from the equilibrium point is called th1ad,;a*j ac3 j*rnvkj,r+ uvhe

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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 the0ns2oz.z81g gaj z+ sc mass is at its maximum displacement from equilibrium,g8sg0nz 2a zcs+zo1. j 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 the s) d+re5z :i;vqw 8.cch,qvmqequilibrium position, its insher)qq:s 5d; q cv8wzi.+,vcmtantaneous 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. l0st,s1 qtf ms4o 8+wc When the mass is at maximum displacement from equilibrium, its instalc tt0w+q,14sfm s 8osntaneous 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 verticaabpqb)7i*ky m b/27kfl spring and bobs up and down between points A and B. Where is the mass located whenky i/a2p)*bk7bq7b mf 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 u5 yveqzv n)g4z3;ga262cvuyep and down between points A and B. Where is the mass located when i6nue2ez cqvg)gy 2y;a 34zv5vts 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 dow,dcwsr,)-dyz )u st6wn between points A and B. Where is the mass located w,w)dwc, szrd-ys6 )tuhen 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 e4jd;k8wiq0(k l* k tobobs up and down between points A and B. Where is the mass located when its potential energy o(*8di0;q ekw4jlktkis 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 produce:pl2w v9d n6umo g3*scs what effect on the system's m dp*uv 2w:scm9gn3o6 lechanical 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 vi4y9/p j3p vcyqyu )bn;brating mass-and-spring system produces what effect on /u;4y9jbv c)ypy3 pqn the 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 springwl) w0vt4xw 8z constant of a vibrating mass-and-spring system produces what effect on th0wwx v4tl8w) ze 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 thc9)28/ctvp ylp 7hrk qe Moon. Where is the period the g q7c l2pkt)h/pry8v9c reatest?

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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 mc yvw-2sm;:ss hh nr8,ass-and-spring system causes what kind of change in the resonant frequency of the:8rv-ssw2hc, n ;shmy system? (Assume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-and-spring system causes what kind of changi3x :r, *, ob0t(x2i xqk30g onywtltge in the resonant frequency of the system? (Assume no chan ,ob0 g2yt r xn(tx:ixw0o*q3ig k3lt,ge 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 mass-and-spring system os -tx8b,nv(v +8uqcmcauses what kind of change in the resonant frequency of the system? (Assume no other chv mqu8vo+-x,n bc8ts(anges 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 ofjvv:vupx+f ad+bc39kuwg) +8 ud.0w0 s6agcr length L. For this system, when undergoing3guu +sr++vguxpwdj vfvkc6 b8.0a 9 wcad ):0 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 i zu0m*hapy+/g s tripled, the time required for one complete vi+0 pm*/y uagzhbration

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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 lo8x;w,kx aw;.vz :q fkyng. The period of A is T. Pendulum A is twice asxvw:yz,xwaqk .;8f; k 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 hb8t8md1wvk . g; 8wmktime for one complete vibration increases by khbww18. g8k8tmmv d;a 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 frequency if both its length and mass are 4isk6gw) oaczc4-hk r: 9zz 20bot;princreased?2psg)rtc69c 0o- z a:i4zbk z4owrkh;

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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 twic -u+fdy;ywv(n+hf+.ydj5 t3 zdyss7 we the frequency of simple pendulum B. Whf fu+ +y 7 ;yzs.3dytsh+-j5dnydw(wvich 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 zeinck i):bntn.36-kq 64tgp is le3 g 6bt.4cn -:6zipenqkt )iknss 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 re pl rln6sm p)2gg-*ey.presents


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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 repy:n(gy01ey m//phh it resents


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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 represzu ebnk/+x v97q-t a0sents


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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 depen- + a4v0yctsd5,5jjqw ec(7(sqcq pl zd 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 equmer7 j3rr0 go(ilibrium is called the ro m7j r(03gerwave'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 crestp1r/g -e m+ei;sii 7.l oy8wdfs 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 passing a point per unit time is called the w8rt y)+z vea,uj )aoa4ave'z,oeuayv+ a8 ar4)jt)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 freqvd7 4mgei :amht17m, ht:3equuency 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. twmfsb y+6v o3n :yb,gx/;:ue What happens to the distance between successive crests if the spos6 bwg:+b u,f temv;x:ny3/y eed 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 wavelenx9; rz8 cfen)e8 3ueoqly,6vogth l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocvylq xf n8e8 o9o3zreu;e,c6)ity. 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 length L, mass M, and tew-id p4 rit;aj.4v *aunsion T. A standing wave is set up. Whr j4pdta.i* ua-;w v4iich of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wave innxs wpgg9r12nw1y rcg);e1t)a(:a *d w 5a jxa the string is *e gr xaa2:11(n 1jrs cg)w;wa59)pndtxaygw 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 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 cw7 r0fg2 zww(under tension T. The speed of a wave in the string is v. What will be the speed of ww (r 7z02gcfwa 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 lengd(wdhry2x9c)e5//vn w wp r* tth 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 t/c)/d(wrt wvp xy9hd2rn5 we*ension 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. Ap,79c pc)bg(cf rhjg /,dw7 pys an S wave travels through the Earth, the relativcycp9j/ chprwd 77b),(ggfp ,e 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 a longitudinal wave. As a P wave vz:( .73qufq ;ebdx 4wvt*cdqtravels through the Earth, x.duveq vc 7qq3 *fw(z:4td;bthe relative 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 i*bp6qz-l llzg3n/: a,oeek*a i.s0g17g a zt es

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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 alonyv yg91,b dd;9qprfn*g a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientapq9 *;r 1,g fnbdydvy9tion 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 posf r ;lb5)3nilazbye., itive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the p3ir,zf.yl5an) l;eb boint 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 uapi)j pq6;q:aci0r a bvrz9.2bec 40 each other on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude v rarz q4q bc a0cbpi:jp90u );ei6a.2in 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 stryx5oteht2 nnw9qn 046ing fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundamentaluadq 8 )ku(a4n frequency of that string will increaa4ud)una8(kq se 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 stretches 2.00 cm when a 2 u 01gpg l5wrpyoi43qhk-/v rmass of 0.60 2g0 3yqpl5 or1hgi4/ pru-vkw0 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 to4c4 lh czg+v5f a spring of spring constant 60 N/m along a horizontal, frictionlv +gfc5z4lc 4hess surface. The 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 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 s0xle6dmp3 u6 iuyi ))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. It takes the mass 0.50 s to go back to 3edli0yup 6ux6smi )) 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 spcjy1 v x 1)0cgt1kc0saring 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 0.50 s to go back to its equilibrium position when it is oscillating1j v 1c10gatxc cs0yk). 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 SHl t ka *7wm0majy4p*:pM. It goes through 10 complete oscillations in 5.0 s.0y4a mma ktl:j p7p**w 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 7bnyl- myf q l*jm:g26eur; eq t:2j2hand forth from the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from :7u6rb 2 yj;nqm-2 hltjeeq2:mf*gylits 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 she a4k6q:b5i spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of asi6 qhk:4be51.5 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 amc w banp8r8l-1+ tfhm*ab*oj 0plitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. Whacp 0mat fb +1j*r8o-b*l8hanwt 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 sbg;f03 g9 eg f6yry(k.h c0ia/fq cd6apring 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 at the equilibrium position. What is f/gd fq0e aykrh0 ;y6ag3.6ci(9fcbg 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 sprin-x9 :mp3qej -rmw,2.yzv 1xudvz0xj ig 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. At what location are dy,v-z- x2i0j ru wxj3m1x:qe9.vzpm 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 tuzxo4ed8w di-(4 wv k5goi):tbj o2 i 7z.ke+uo the end of a horizontal spring of spring constant 528 dzu7i4j .e )tzogiw bk kxeu:5ov+ (-wodi40 N/m and set into simple harmonic motion with 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 -2 +hvg3mkb0v)d tnhqq jj69+zo7g 7d mkzl:a 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. Whajdzojvgzgh602mt d qh 9)a3+l q vn:b-k7+km7t is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring of springfcu5 zni 2l83mt) zl7d constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum km87 dz3nf5z t ll2ic)uinetic 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 1r g6t; h(0dljy0 cm from its equilibrium position and rd jhy tl;0g(6released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is a qj2su7w 6c0v)qfmk.v ttached to a spring of spring constant 10 N/m. The object is displaced 7v.vkj c qws0f62)qmuby
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. T.kg: scoac8b; he object is displacedsagkob cc;. 8: 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 springps6*vbuzsc 0fqw 2fnu -t *2t 18.cnnd constant 18 N/m, displaced slightly fromq vt fnt-n6ss.*p d2fz81nwb2cc u0*u its equilibrium position, and released. What is the frequency of its vibration?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillatshz8 hp1fd7ub rt9 9)ues at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is9fhhbru 8 9td71pzu )s 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 spring ;5+pfco-zt4bfppwa .t(rx1y y*zo h.bu5lo2s. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amxtryzw5 2co5bthy+4*. upl pb f(po z.oa -1;fplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In eq9egsa-k:tthi -h e2ye y7(k+ f2xkqt1uilibrium 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 r tt- hkx2k9 s(it:aee+12ky7 - hyeqfgest. 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 equilibrium the mass + l a45vz2qpu gd625yp 5ggqxrstretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 c56zv5g qurg4xyg2l 2pq pd5 +am 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 equilibrium the mass f6c r axef6q)ht4h y76stretches the spring 2.0 cm downward. The mass is then pulleqhac t 7y f6fex6rh46)d 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 positi :sd +md .a8,x umjhtqq1o*h8ron versus time equation:m8o +t1*dh:umq h saj r8dxq,.
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ths9orf bnlmkf( a3w8 v1q,/vj/e following position versus time equationl1 fjw v vq/3(sfok/b8,rnma9:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 f0 t*2 rzvlkd-y:8dzbmotion obeys the following position versus time equkdv2*dytzf0 zr :b8-l ation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 mzu)v +(u 4lghm cl4*a +.rzbv f3s7nxaotion accordinvz4x*74( ls uahcz+ nb u3f.rva+lm)gg 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 wvy0)8h s9 heo5wobs1with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track.ewsbh v)0w19y soh8 o5 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) Whatwpg8ta1 z9k*7k *aji/ es,qrn are its frequency and per*ns/89aw keika gtq7r1 *j,pziod 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 mz6g5k t yop) 29ok0ysq long. 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 leng 51wr1crspna3th?

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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 grandfatherr btut c p0n9 v,ge,5ayizx/:. clock is 1.0 m long. What is its period on the Ear0i5cnza.e tvuyb,/ px 9g:tr, th?

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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 long. Whatl*j/anqr2caehx 3 -k 29a 6xta is its period on the Moon whj-cea 2h39/xn q6 2aat akxr*lere 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 spy * e3cy00 +2mfabyv; timz-8 a (naqcwx2v;bjherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position aywa aa3qtbcz*v8ei+b;j ym0n2y0v(cmf2 - x ;nd 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 has inith4 8*kpxnmld ;ial angular displacement of 8.0e.xl8;*mnh4 k dp 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. Thep . am2y*awbi, frequency of the wave*2ap, bw.mi ay 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. uq8.a9 9aas 4p+b:zz eihx tpbku+q*5The frequency of the wave is 120 Hquzaaepp ba5q*b+i:+h ukxt9s.9 z48 z. 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 th cuf3.chih 1cvqy* ;p+e wave is 12vhcc* y;p+ 3uqh1icf.0 Hz. What is the wave speed?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a wave which has a period mqqye wx86+ox60gox/ 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 j)p;fz3ofsd60tfp2h a wave 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 and a wavelengthbzg f6*)o dk3awop d+/ of 3.0 mw* )3gz pdakd oof/+b6?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the velocityd ucoz,m oy493 of a wave that has a wavelength of 3.0 m and a frequency of 12 y34m ,9zucdo oHz?

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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 9f xci5)gtl5ta 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 i3 fxr)x dr6k cgc:upq)s, j18ns under a tension of 1350 N. Whatdn6u x) k 3,cs)pg xjr:8fcqr1 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 6.2 db7iz)lvz n +kqp g2-fonn.70 g/m is under a tension of 180 N. What is the velocity of propagation of transverse waves aloiv-nk.7 )2pblz dn gqzof7 n2+ng 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 wavelengbl.-b0rw0m d 4i+dkh.t-p q dwtz+. wgth is 0.500 m is traveling down a 500 m long wire whose total mass ir0lh--bikpt+wtw . 0+ .zwg. mb4 dddqs
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 fix7k m(b/k8uq(yp: h2y1frf rj yed at both ends is 200 m/s. Which one of the following is not a resonant frequency of this strim2h u(fy k:rp qk/y1 8(rby7jfng?

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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 onz5xqjr7z199j: ear6vecl 0i 0j*u lp2glq7lee of the following frequencies can set the string injcllpal je9u5 qreizv*706glr2xje 1 q:7z09to resonant vibration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string is observed to have four equal segments il c23,ytwjd (ln a standing wave driyjl(c ,3wd2 tlven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrates at a frequency of 12 Hz with a standinqb6f chq w w;q bn,whs:a(6)4bfz xf13g transverse wave pattern containing 3)w1wzfbqxwh4(:6;3b sn fhaq,f6 cqb 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 .gcjvkh2 r)r(/gjbs7 tension of 20 N. What should its length be if its fun2krsg(/v hjb)j rgc7.damental 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 r.tuh 2(u vu7bof linear mass density 2.00 g/m and length 0.600 m whe7v h.t2u(b uurn 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 vibrats/,fg o/2 v1; qiuf *j 1pcbxho ,zu+psat):ynes at a frequency of 85 Hz, a standing wave with gxfjt/n1)buass u ,yc/ z,:+ vq2;h1ipoop*ffive 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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