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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 process is called theg -9e a6m;r tc;u+xxva

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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 ixa q2*bsa,hv. ir1p l7 mar7h,s 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 displacemenhybg bj9q1*.-bb/db xt from the equilibrium point is calg bxbd-j.b b9qb*h /1yled 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 is at its maximmr.qjw1zk6 mt ,i*wg/um displacement from equilibrium,*tgk/, i .rwqj6w zmm1 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 equilidpfj: h,d*weqz8 *h :lo*yt r8brium position, its instantaneous vh:z*,ej8:wydtq* 8 ldh rp fo*elocity

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at maximu,ob575dj 7*;c nxokn iz+4x dmdpjqdkgm*w-1m displacement from equilibrium, its instantaneous accelerat*xg mdmdonj-bp kxz+ 54jq *c 7odi;5,k7 n1dwion

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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 betwem evw3g95 gfqkg,zf-,en points A and ,qwff zg5-v9,3kg m geB. Where is the mass located when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to q*0ey/fe+(nu( dquu :le myj(a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energjqef/ ueqduy:y((* n(e+ ml0u y 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 bemfqo20 gryj/+1wbj*m tween points A and B. W2gj 1orym*bj/q+ 0mfw here 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 spr)wd8-ccypk r2ing and bobs up and down between points A and B. Where is the mass p8-)c dc2rwky located 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-and-spring system produces what gu.v cfunydk*7u 1qw)du9 /.p effect on the system's mechanical energ/q)yg1 v.uu nc7kd *p9ud.wfu y?

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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 drc u9dpd7phpdpt2fpx5 * 92: effect on the system's mechanicp:p25p*dfxhdcpru t 9p79d 2dal 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 conspj/q iq,.xkp t r46*uftant of a vibrating mass-and-spring system produces what effect on the *ki/.xfrut p p64jqq, 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 Moon. Whzyfr31+j0b8x n7t pfg0-ghhg ere is the pe nf+8 gfp0xgrgh1yj7- z03 thbriod 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 mass-and-spring system causes what kind zko7c,l:ft7r nz(m4gk 2sdh3 yhhg 98of changnh3dg2f rhyh8:9g(z oz4k77cmtsl k,e in the resonant 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 what kind of change inog3zkdd go vw)28omevaxcs8*r)40 : d the resonant frequency of the system? (Assume no change in to4*ao:)gg k8 xr3zd8 v20e d)osdwcvm he 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 causes what kicxk q,xk l/ks9g/7ft+ jq fw4,.jaws,nd of change in the resonant frequency of the system? (Assume no other changes in the syst4sfk,c+tw7k, k9s.wa qql/f gj ,jx/xem.)

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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 weightleeu rei s*k; ;jia (u-th,uz-*ass string of length L. For this system, when undergoing small oscike s irj auh ;u,*u-*(-ei;tazllations

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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 one4p s 09ryof8ih complete vibration fyr9po8s4 h0i

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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 3z.r-sh uxuhsar/ (.rperiod of A is T. Pendulum A is twice as heavy as pendulum B. W ah rsuz .xs.h/r3r(u-hat 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 triple-6ind4f8jqmk0 j pzu(d, the time for one complete vibratioqd -z8j ufk6pijm0 4n(n increases 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 its length ydom6; zg/ak3 and mass are increasedy6g;kod3 /zma ?

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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 at1 g1e5gztb2.u( ovaaq.h+prz twice the frequency of simple pendulum B. Which statement is correzv+u( zb5. 2ar pa.gte1hgo1qct?

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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 ac m1lf7 hnokydo+.(m +sceleration of gravity is less than on Earth, the resonant frequency l os (.f71++m dmohnykof 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 repreu+ omk:+.mm zcsents


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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 9:or;ec+53coew+tva8rn s lurepresents


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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 represenlk ud.t:2u -7voyazq 0vyp 6(qts


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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 +onurgm, w;- 5xur9qqfound 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 thpya)witz o0* p 961l5lfea-equilibrium is called -5 aipfpo th1 z90* ae)lwt6ylthe wave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between successive crests on a k*oa2p4j6)ekdm xh0d 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 wavs y5q fi*qn56fxk/-te e'sist5e/qyfn -*5kf xq6

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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 d+noz 5vj zvpb;mz k08e**(dbv dt62q'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 distancejzygrb0mul- h nl574 p70rg-y between successive crests if7 7 540r lr bluj-gmzgnyy-hp0 the 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 wavelendrgdu/4;j8g9v p tn 0qgth l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the0nr/ggp 4;uvjd9 qtd8 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, e73 ae.iz-2xjtxrt k. and tension T. A standing wave is set up. Which of the followinj3tx2ee r a.ix 7tz-k.g 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 ing nbayqk8ldvn gu ;1f30.ql,7 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 cdf kalq8vq l .ny g;g37,0nu1bhange in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a r /ya p(l01j7i9mv kwqwave in the string is v. What will be the speed of a wave in the string if the lengj0v 1q lwrpi m(9ay7k/th 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 speed of a wave gh9rz+,t hutcnfkbp3/5e, ;u in the string is v. What will be the speed of a wave in the string if the tension/eb,h+3 n rc;,tf uuthp5kzg 9 is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wave. As an S wave tra d1ui3.73-n- r wcvnf3wzoidpvels through the Earth, the relative motion between thnw3-3dv zdp1wiu f -.ionc3 r7e 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 longitudir xk k*lwz/;+r3by3k3re t0 z ena33dynal wave. As a P wave travels through the Earth, the relative moet r zkxak y b/3y3+*;k3dnr3rz0 w3letion 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 wavi*9va 0u2p8nuc8g ;y1veuo kpe 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 ua;1zrnu n3x. z4lt y:)dyd9o to the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and tra onzu 9dy:3 u1d.yxt)n;r4lz ansmitted 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 ampep .v9jgy:0 gug79hc slitudes pass each other on a string, one is travv9s 0.cuheg 7y :gpg9jeling toward the right 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 erc,0k xo8) zda4-o n3nxwma4 zach 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 in the negative direction. At the point that they occupy the same region of space a, c x3rm 8-0 no4nwk)azdxz4aot 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, occurz *4:vjwx j)a)j p,kbkx6ui)ss 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 fundamental frequency of tha+9 dshss1b/+jnr vrg/ t string will increase by+g+9bh rjs n1vdsr//s 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 springhl-y 0 o.9n 0moc5my;cie)qm i that stretches 2.00 cm when a mass of 0.60;c.n-m ciqo05h yey9 )iml0 mo0 kg is suspended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of sprihl7x cj 8h9qefom1 bmo(-7;jtng 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 oscillating. What is the ampxj1 8; (lb7f7oo-qmhe9 jmchtlitude?

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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 of;l jr0bv. idcb x*cdt j- m85q ,bro64s7li*a spring of spring constant 60 N/m along a horizontal, frictionless surface. The sr8v0; -qb cjx*j.bf7iic o,5otr6b4 lmdd *lspring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the period of oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along cu21xlwr4o .j-6j f8 xdknrj5a 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 dj1n -f5 c68.24u ojxwrljxkr 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 gd e6i6 )j5rjpin 5.0 s. What g5e jpdj)i r66is 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 fz0q6g- xxx v3mxmv4 eid 0)k5jree end of an ideal spring of spring constant 20 N/m with an amplitude ofqx -0j3 e g)k x60mxmdxz54vvi 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 attachu g,c+hr k4sm9vt09dced to a spring 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 asr4,0vc+gmhdu tck99 t 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 c4jtr xi+oj- 9J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is toj9i+c 4r- jxthe 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 51q,qxu6 zuip9pa tjm 9bu*r ,of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed61*59u9p, u jp t qaubiqz,xrm 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 al*6hru zyc9r1;rkfb2;lzith 4se :n,hong a horizontal, frictionless surface. The objsh ,6;9rkz h2bun cr:1y;h 4fr* ztielect 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 endnm809g g9i( pczouvrg8o)d; e of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mec ( 8moovg8)n09 gcpez9uig;drhanical 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 horizontal spring of spring constant 5t qi tz )j2l5l(js7kna41tmcfqt b. ,/0 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the tot(7jkfn l1) bl5. , ttiamct4jt/qsq 2zal 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 1uxe))vlt aif7d8la f* rf ,3xspring consta ) ulda8rix,fft 37e)1 xvfl*ant 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-sprincqpl8u (8fsan4 ;ib1lg system is displaced 10 cm from its equilibrium position and released. A fri 84l1nlupfsb aq8(c ;equency 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 attached to a spring of spring constant 10 N/md09i (-hyrkzvwg8 ri 1. The object is di1h0id8 zrvrg(9 -i kwysplaced by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/m. The oby.o+u;g3wx x 1 slet+ e3sgo8aject is displ;3ue gw+e+la ostx. 3yg xos18aced 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, disp ybtz9zk9t5r;laced slightly from its equilibrium position, and released. What is the tr5tzzbk 9; y9frequency 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 spriny3d- e+9,fc m ;vglhzag. It oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and releasedem a,gvl+;fdc3- yhz 9. 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 tv,fd6t( 4xs elo different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10de (txs 4lf,v6 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 springmn 0d(/6cd 3w/itkm(1im gut z. In equilibrium the mass stretches the spring 2.0 cm downward. The mass/(mdi wg(ku t01mmzi/t3c6 d n 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 equilibrium the mass stretcd)s wsi/b7jcv fc1yow) 61gp-b olm 4-hes the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest c-lsimw)o gfcw7bbdp1v/)6 1-o4syj. 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 spring4aqf kp,q.lq0/l z y2b. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled alaq lkpf 0.2 qq/bz4,yn 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 tiol 9uygas+9j-pe 0 9wl 6tlqi2me equation:2o9ly+al elgsuw906t9 pq j- i
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the amplitude of vibration?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the following position versus timej:ols j 8(pmc, equation,lmoc:j(s8 j p:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 position versus ti*g rlq- jy pxwd6hq*,3me equation:r j3d,wy g *-xpq*6lqh
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 spriqgo-w)sq mo;p;hz;p 2 ng executes simple harmonic motion according to the equat;z;opqsm;po qwg)-2 hion $y = 0.50 \; \sin (18\pi \times t)$ 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 cgi2xl1o4ip,he-92xu, ff,y4wg n fqu onstant 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.4-uf9i yew,i 41l f,x2pugqxfgho,n 2 (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 fr,io f3f hs*/q9grvhauyu 1*z; 6 d)zduequency and period on Earz9 d/d*gz1farsovu3q,6; yu *)uhh if th?

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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 perk 32ewjga:sed:a x. 1wiod 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 length/ l+pwkf:z)bu n7do( n?

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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 qbd iidf) sex:hf;.a g 376iy-is 1.0 m long. What is its period on the Eary)x f:hibqfa6sg i3di 7 .-d;eth?

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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 ikoi q0l(5 ) ffm+dcbd1s 1.0 m long. What is its period on the Moon where the acceleration due to gravity cq b1dk )(5f+fliod 0mis 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 aei azmn( x,7o15 c.jys 0.25-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequez,mce7oy (s15 xain.j ncy 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 hah bus:ok1e *d,s initial angular displacement of 8.0e. It oscillatesdhb:soe ,uk1* 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 a ( e*veop n1uvzcq1c7.t a given time. The frequency of the wave is 120 Hz q.cnv cpeo1(z1*7u ve. 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 -ju nkb;fyp2;2/xtm gtime. The frequency of the wave is 120 Hz. Whak ;;t/g-fmn b2u2jpyxt 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 y 7 a5dy7 6t;revidw-atime. The frequency of the wave is 120 Hz. What is the wave speed? 6-ya;yw dt d77ave5ri


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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 oml0,eko (xy0mz e19ntk cs /b.f 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 frequency o2v cw0i +i z;1z 3ci 57+ew3c ufpcu;avaqfpf,f 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 ,:xv sl -e7lswp w2o5da frequency of 12 Hz and a wavelength of 3.0 m?,2 xdw:lsv-pe7o s 5lw

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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 wj19 6zen nfr6navelength of 3.0 m and a frequency of 12 Hz?e 1r6jnz6f9n n

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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 qa(ze9zaf4+6tzk j) 9 xb5 bzswave 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 N. l4krx8qu: g*m4, ok7t m-sdur Whr*:g,xo ksk7urldm4t4 8 q-muat 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 densi,l al tii8j)bz:1 )ibr2uat 6tty 6.0 g/m is under a tension of 180 N. What is the velocity of propagation of transverse waves alongi6)1llr it),8tb :2baztjuia 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 tr/vfwo mv)l 0hz+5cx -eaveling down a 500 m long wire whose tot+f5/vc- hm) w elxz0voal 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;w1zxsn k, at1 on a 2.0-m long string fixed at both en zk1 xs,1;nwatds is 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 ha(*z+4uy rja)n(- sihcw8j slzs a fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vibrazn cul+8)hsw *ai-4jz(y rj(stion?

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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 segmene93:k)ibamaf;ke4c8u gcq, w .4s qah ts in a standing wave driven at a frequency of 480 Hz. What driving frequency will set;4fgqaq ,ca sk)3weeukc :h4ba8 .i9m 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 stanln*u pitt/.fe8du1 )3p :sp y(ydc:mm ding transverse wave pattern contain) 1y:ucfn t.ddyl 3(t:u*mpippem/ 8 sing 3 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 undk( x keq* 3atgrvio36:er a tension of 20 N. What should its length be if its fundamental resonance fre3kt i erqg:x3(ovk6*aquency 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 2.00 gab7(d6d rz-s6j o6k ls/m and length 0 6b7djzkda6s (s-ro6l.600 m when 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. Wheq4ls8kmy 0rl 4n the string vibrates at a frequency of 8krly8s q4 l0m45 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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