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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 proce2 -7m/ k d*a6uhlu))v w xmyr0(ffptfiss 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, thh31s5u jsadd1 zf5 hm *9kj9pse number of 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 displaca1nlrfoa3xm9+1m6x vfy p , r2ement from the equilibrium point is calledmf6 r1o9x+pny2a,vl r1 fm3ax the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass p:jb,e/x3gwtnp0 3 zia -5 mjmq+jns+is at its maximum displacement from equilibrium, its instantaneous v5 /:s-a3n pwg mb+pm zn+tqj 0jx,ij3eelocity

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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 5ov)wgjzuh,y,ad2 2 y. When the mass passes through the equilibrium position, it aoyw,2yu2h ,dj5 vgz)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 under3 ;4v iv;7 waoptu+mdagoes SHM. When the mass is at maximum displacement from equilibrium,uav 4+t3w;v7p oi ;mad 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 spring and bobs up and down betwee7i)9ds +-ztuvfnebd: 2x 5kqsn points A and B. Where is the mass loc2v 5- kedsux+:9 qbd inzt)7fsated 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 and down between pn3 x(a.qcdo q th;im53oints A and B. Where is the mass located when its n33hq . xqi(ca5do;tm 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 :+nccjmoyr6dk9 md6 t f*t -)jbobs up and down between points A and B. Where is the mass located when its potential energy is a minimum? 9omtrjt+*):d 6c 6dcnjymf-k

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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 vertivy40qzs6ms hoka la4v m9z)sg l,;8*ccal spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a yqozs6kla msa49 h s0 gcmv84*l;)z,v 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 x/moh--wiz,tof a vibrating mass-and-spring system produces what effect on tmhw/-xtizo ,- he system'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-apjj d,byi77e 0o b;)yfb-7 egpnd-spring system produces what effect on the system's me,pgj y;7if7ey 7ej0ob bbd-p)chanical 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 spr2 hz rrkrmd..m */ (pw01fp m*hdv7shking constant of a vibrating mass-and-spring system produces what effect on the system's me.*.2w/h(r 0zrhks hm7p v*rdfpm1km dchanical 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, ga(ck : ) rg0xv(vg2suboth on Earth and on the Moon. Where is the period the greatestrvs(: 0vgx2 ca(k gug)?

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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 p el-nw8xhm lk)+i(a9k of a mass-and-spring system causes what kind of change in the reson(ekh mx8ainl pw-9+l)ant frequency of the system? (Assume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-and-spring system causes whatb56x8gx ubc0x:d0mo7( ib6udfampr 4 kind of change in the resonant frequency of tbb680u pb4 7i5g(:xcfam6d ux0drox mhe 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 mass-and-spring system cau6+r3btqthxs b:xa e, 0ses what kind of change in the resonant frequency of the+htsq63xa: xb0te ,r b 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 op.xgq i d6h-8nf length L. n6gid h q.8px-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 tripled, the time required for o; k/(lduybj/ mne complete vibm uk//b(j;ldy ration

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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. Thd 8y.2lht mz g/av*vnf;r)jj-e period of A is T. Pendulum A is twice as heavy as pendulujv )8.y*gmf tl d hn-avj/2zr;m 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 completj ) :c;u1ollice vibration incjo ui):1lc;lcreases by 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 it. 7hxuxi2c;hu4wr x8y er;) tqs length and mass are increasuy.q i4x;)hwru87; e ctxrhx2ed?

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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 frequenk6yqr8 zjwjtx7;6sqd .u 9b2c jq:p n4cy of simple pendulum B. Which statement is corre: 2cxs;up49dyw jk.jbq8r j676tqqznct?

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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, wher klo5c.ocyz9 u fv;18/y 3ifope the acceleration of gravity is less th53i / 9cz.f1l yook ovf;y8pucan 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 represents;505+p hju1x rtct z rde-wbd+


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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 rerzoujayvgnk +*hu *f41h*8yc( qu, c;presents


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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 repr3.n8;ifi rzdw 7s5b xgesents


本题所包含的其它图片:

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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 +eu *u.adpvn. f/v0fjof 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 wave from equi)ag l5e8fiqxx/sr ;. rlibrium is called the wave'l8 .gq 5xaies)rf;rx/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 ssdzoa3n */d65u7hfw 6 quj,psuccessive crests 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 offvq-ipj+r gpp w1g1;6 a wave passing a point per unit time is called the wave'rfq;1+g6 vgiwpj1p - ps

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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 wavelengtkw6dz g,dfq*3 h 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 distann e0 p5tvg82ti-sktp3ce between successive crests if the speed remainsg2 i3te5s0pvn-tt 8 kp 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 fo0a -mf0 -xs6vcpv 1rkrequency f. A second wave on the same string 1-ao vc 06frmpxkv-s0has 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 strinw3czst9 by 0w2 9supdjw54i*k g of length L, mass M, and tension T. A standing wav0su4sp* 3w cy5d9ztb2kijw 9we is set up. Which 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 wqu3bw isy14 0rave in the string is v. What will be the speed of a wave in the string if the mass of the string is increased to 2m, with no change in length?r0sq1i4u b3y w

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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 u6t)f 68fnpv+2rdp+ mx5pjpsender 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 length is increas+pnfvsxt6d+e m82 jf)5 6pppred 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. Toti 0z x+w),jthe speed of a wave in the string is v. What will be the speed of a wave in the string if the tension is increased to 2,wto+0)ixzj tT?

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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. Asghze sm* */7vf an S wave travels through the Earth, the relative motion between the S wave and the pa7esz* g hf*m/vrticles 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 uiq21ozyh+gva-z 8r+ wave. As a P wave travels through the Ea1zu+8o hz+vqy2 rg-airth, the 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 w8,:uy+lic b+ixqc (hs: z6k ulave 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 t r:vs 0she);t*bx1uez o the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientatsbee*)ruz:0 hxv;1 s 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 oh( aptm k;x3r)ther on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same xra pm3)h(tk ;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 w/uc xt o3/73u-rmehttraveling toward the right has a positive amplitude, while the one traveling toward thexuhwo3 3 7/euc/r-t mt 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, occ *fv. vtix+iur 0t)i5-hiv;b lo2y2zc urs 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 tensiln29r ;m t osy64bxgc*on in a violin string, the fundamental frequency of that string wlc b9 r2go*;mx4 nyst6ill increase 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 whet: fyh; j6. dbm.rdb-fn a mass of 0.600 kg is susdrb.hb . j:fy-d6mft ;pended 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/mdhnm)n55ao ra-k;g1n 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 oscillating. What iamna5n g) dh r5no-1k;s 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 ho m/k)tm ;fbg4zdhd3,enpa-9v rizontal, 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 oscillat e3g-/p)fnk 9,d bmm4;azhtvding. 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 a horizontal, frq 3dwiwioxppoz*0mtt10x2u3 3h r/f * ictionless surface. The spring is initially streqo dh3oxr/w* 3 z*x 0pftiump2t03iw1tched 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 under6 6dy,3h;j 7hmnv c4e f8nzokugoes SHM. It goes through 10 complete oscillations in 5.0 s. What is the penj6 ,h k4yn 7zf8m;d3ocu h6evriod?

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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 e gck(4drx 5+gsnd of an ideal spring of spring constant 20 N/m with an amplitud4 r gsd(k+5gcxe 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 constanta q.vwqfo55+y 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/swa .q5 vyfqo5+ 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. The7sz6p hg bn6(:+/f*xbjlmb+c.sy iltu sya13 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. What is b+pssy7(mzfb s 1y/c. atl ilgu6xj+bhn3*:6the 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 atzu+d(wi740 t6n li 3lg tej,jotached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in t+0n67 4 eij (j,d3oiztllwgusimple harmonic motion 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 constant 20 N/m along a hp5/ 8zgd1udti orizontal, frictionless surface. T581gt d idzp/uhe 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 attached to the end of a horizontal spring of sprf)z7eo9r(f kp ing constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. Whkf(roe z9pf 7)at 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 enda.*9 0qj3 n;r+ep uufik8eous of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplito+u*p 93 qnisuerku.; j 0a8efude 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 ideal spring of sa0 .ajeorn9(go+x3k + bc)kh-ce*e nhpring co rbhn-9c0go(.ac)o3xj+knk h* a+e ee nstant 20.0 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 itqw 6dff: m:h-gx 0w n.s,owrv/s equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displacevwf ,xo snw/m0hqrd -w.gf::6d only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 1s.s (rpxgdw*tr- g)4w0 N/m. The object is di()wsgd w.*r xrg-ps4tsplaced 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 sprj9h f+ d. qhv0ooy2h8-2ryorcing of spring constant 10 N/m. The object is di+8oo2y9cdhhfrv2 yo0r h.-j qsplaced 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 u6zg s ; :icm1wzf/l7eN/m, displaced slightly from its equilibrium positiof71/6 zg ;wc:lsi ezumn, 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 osc0 +ayhf x),,t.6tb2ksarpfp dillates at a frequency of 1.27 Hz when displaced a distance of sr.t,ak2d 6,f pyb0xa)h+pft 2.0 cm from equilibrium and released. What is the maximum velocity attained by the mass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, are attached to different springs.1gcfg i9t*yn 5wn6 2wy Mass A vibrates with amplitude f*gt6 5n 9c2giwynwy1of 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 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 t*am(8 f;p upzd fs*h .bcg,jbe*;9x xwhe mass stretches the spring 2.0 cm downward. The mass is then pulled an addbjp(f upmxcb f*8wgzd9e ; h*x,.;s*aitional 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 equilibrium the mass stretc + lm9s2o2gj xxz9u7f)dfssg1 hes 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 total energy of the )sg2fxlg 9xmf2dos jz7 u+19s 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 equilr0,+ocgzw14d goiuo 8ibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additiw8go dru+g,z0c 4oio1onal 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 fol, .ga/6txxw dslowing position versus time equatio sda,w.gx 6tx/n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmonictd)/7aq; jyl-el1hdgb y*n8wto b:j 0 motion obeys the following position versus time equati:7ogd-/*h0eq 8 t)nb;at jjydl1lby won:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 th5on*4qcw. vd ee following position versus time equationnc.5w *dqoev 4:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 sz87 8b-sdflulimple harmonic motion according to the equatiob8f7l-l8 sudz n $y = 0.50 \; \sin (18\pi \times t)$ 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 20fkk8wo*k.uz 0 9nc4xl.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (Tc k k.ko 8u04nfz9*wxlhat 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 itsbs;opj qh54i v)b:ovidy;v76 frequency and period on Earthos56;biq :djyvvhp ;i74o )vb?

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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 in3z i2v(en g-kbn+ii /s 28.84 m 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 perioe q6c c9/3nndnd 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 ic,kv 7+u7,mo:oa ym-at *wx crm3we 5bs 1.0 m long. What is its period on the Eartmkcm:wvc t*bea,5xya 3o+m w7-,ru7o 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 long. What is its period on t (wqg2 k uj2wj -fdtv*i84;snfhe Moon wher2-kif4;njw*wd 8 tfgujq s (v2e 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 0b /p7-jx axsv/.25-kg spherical mass attached to a massless stri -xvaxs/bjp/7 ng. 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 has initial angulmgw( 6cmn 7lt 39*8n1ch/0mswbavwqaar displacement of 8.0e. It oscillates with a period of 3.1a78 /wgv6 9 sahmnwbctc0*( 3mqmwn l00 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)8 whfv9 xapk;y3/ kzd given time. The frequency of the wave is 120 Hz. xda9/ p3 wvzhkk)8yf ;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 give c5ce8p; mc5bgn time. The frequency of the wave is 120 Hz.c mg855ce bp;c 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 "snapstl28 e,nsy,h; 4af4p5wqbnu o hot" of a wave at a given time. The frequency of the wave is 120 Hz. What is the a4po 2,,4tslnhqbn5fwu e; y8wave 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* uy gc;ab*(pm7jqo4;n fkc a; has 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 frequem-o /8o6mje;igdhr(a h ql4 y0ncy 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 wavelo5q zz97gq 4.,w rrtltl nb8t5ength of 3.0zt w l ot784qlt5 .qr,zgbn5r9 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 oftg8+ ww)sn tzg*;(iyx k-myy8mm(j 3 axh3e5a 3.0 m and a frequency of 12 Hz; tm(gg-h8wktm5*)x a nzyjiwm3sy8+(3ex y a?

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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 o g*c m3 cq,;yv:qrmup6f 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 a tension of 1350 da(uhr1rw;o : N. What is the waveh ;da:(roru1w 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 tensionz,wu3; p9db4(vxe5kteb d a1i of 180 N. What is the veloci3a (;b i1pz ke4 vd5xuwd9be,tty of propagation 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 down a 500 7bm bz 4m4skr:zyrkd k(g da,a:w /7t4m long wire whose tot7dkk4:d/ g4at k sz4m ma(yr:zrb7w,bal 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 propagation of a transverse wave on a 2.0-m long string fixe a0ft(oec4a5t tg89ujd at both ends is 200 m/s. Which one of the following is not a resonant5a48g 9o(etu ftca0 jt 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 Hc)f 81fghevcuc6y3a2 z, which one of the following frequencies can set the string into resonant vibration?f a6 fegvh)8c2uc13yc

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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 segmen9*8mpn k1ezv-86 yyor x w3wslts in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standz ywe 8-9pmnok 1ys*l8rx 36wving 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 122tj**fid,y w)g5x n8a (bef-y2 rnyog Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to)2gfrn 2*gtw fx8 yno i5(,jade-yby * 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 undeu w. pug7:p6hpr a tension of 20 N. What should its length be if its fundamental resonance frequency is 220 H:7uuppg w 6ph.z?

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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 5ah9qio 7kc1tof linear mass density 2.00 g/m and length 0.600 m when it is subjected to tension of 5oht1 7qk a95ic0.0 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 vibyriv 36r8uz2y rates at a frequency of 85 Hz, a standing wave 3ryrzu8v6iy2with 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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