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习题练习:Physics Unit11: Vibrations and Waves



 作者: admin发布日期: 2022-08-06 21:32   总分: 99分  得分: _____________

答题人: 匿名未登录  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 calleds2*z;x-v u/tmu5 mujaz9bll0 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 cczwu q6;xo r(:ejd-7d 0e;njxalled the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement ab. -ywx.xitwc pqi* bxn5p g)ie9 * 2v55vc8vfrom the equilibrium point is cvb px-)gxvip i5 .ctn8eaw*5*y 2 cb.5xwiqv9alled 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 undergoeabcx z9i, rf6 g(fs8z6s SHM. When the mass is at its maximum displacement from equilibrium, i,afs(xfg6i b 98 6rzczts 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 thg54: 1to;g5j vxn2rydzo4 tm prough the equilibrium position, its instantaneous velocrx4n1vg: 5y;d 2z jo mt54tpogity

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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. Whenwj g zsk/-,c ai9 s8p51gfsi1v the mass is at maximum displacement from equilibrium, its instantaneous accelerat s 8p/swg-1 ckf1sijai,v9gz5 ion

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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 : vexjwsm:,t 9and bobs up and down between points A and B. Where is the mass located when its kinetic enwv9st:xm,j: e ergy 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 k5;uu ofpglzy0k +/y b.h 1r6tand bobs up and down between points A and B. Where is the mass located when its kinetichl.rtb 5; gz61ykuk/+ o0pu fy 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 l7ya zo*ph m) x7-7f1ig xuvh:gvu4p:and down between points A and B. Where is the mass located when its potentialvo7pihv p:mf1g-7: *xxlz4h 7y )ugau 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 sp dtpl8z7 ;w h,8dgs) vhtiyj/.jx bh,3ring and bobs up and down between points A and B. Where is the mass located when it,8t;d g)hlsdzw. /, pjhx78j3h t yivbs 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 syst 4aa* r88nk+jkkal4g;q pa .frem produces what effect on the system's mecha+q.8 4rapa*8afk argnkj4;k lnical energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-spring system produces what 9uz, t bb+mrgtm,zgxyh -4/ 1z)j -clveffect on the system's mechanical energyzhgc 1b,u,-mvr l zm y-x j)z94gbtt+/?

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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-andhof1-dswaj6 vz.dc8 1r/j2 st-spring system produces what effect on s a61 /tdzcjo8fj12swvh.dr - 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 Moon. Wk qa d 2q 2zv*(m)uff;ev+jwy:here wv )*f e(dy:q2;2zk+vaqufm jis the 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 mass-and-sprinx qijx.;gl *a7is:u 0tg system causes what kind of change in the resl:q 7uj*i xxg0s a;i.tonant 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//-/wkt 8o8iw tg8gq8j bpgau a mass-and-spring system causes what kind of change in the resonant frequency of the syst /88tbjpko u a-tw8/8/gwi gqgem? (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-a6im, p1tu: xmeyrt1u,nd-spring system causes what kind of change in the resonant frequency of the system? (Assume no other cha1ue,yx,ptut6 r1 :mmi nges 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 weightlessndxb2;hgs e::ng5wb77el n4 nqk. 3ej string of length L bge3bek :sd;l7 nejn7wqxh4n:ng. 25. 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, xwy9ixxlr8 5-fn.*)p a8oj*m( ui josthe time required for one complete 5s xinl)oo*f(m 8-j *xa8yu pjxr .wi9vibration

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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. Pendu 0d(.qrocc-fv lum A is twice as heao cfcqv .(r-0dvy 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 complete /fkil/ 9i xuw.vibration increases by aiu/9ki lwf .x/ 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 aregmrm,y5o8 j y 3r,13grxj. xwt increasjrt xygxr3o5 13. m w,gj8my,red?

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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 2i i u4yhzpfjqsk 55oc+j ,/(oand forth at twice the frequency of simple pendulum yu4 5oo5/ j(p jzif,shc +ki2qB. Which statement is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the accelerajp8c poxdc3jh5g26 7ation of gravity is less than on Earth, the resonant frequency of the pendug7hacjd cx8p6p2 j5 3olum 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 representv1iz uw*omc fcd7:;:ps


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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 reprelzs56 qwscv+ mk6,kooh z lu-6.h 4ax9sents


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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 rcq+ z0i3i x2elwtg*zx0l / jzy. 8zr:fepresents


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 of vibration is found to depend ozg7yn8n xhq-d d/ad* .n 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 fros-o8f ;qw pujr5ge3a7m equilibrium is calao q7e r;3 fuw-gp5j8sled 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 succex9 jp7f 1tnp:yssive 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 of a wave passing a point per unit time is called the wave'+as f;-z-vo3mcyr+ h ssscf--y+ ;o a shr3mv+z

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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 ,v /0lavfeo a)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 increas(ge7(sguub +mfqr ky b2j7;9gg0+nm hes. What happens to the distance between successive crests if the speed remains cg 7g7g0yhfq e2 n+bb9(ku ur(js;g+mmonstant?

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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 bh 12b)u8z:dtls9c3h 9uz cvn wavelength l and frequency f. A second wave on the same string has wavelenhd zt2b)v 9chbsul:98u1zc3n gth 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 string of length L, mass M, and tension T. A stw n/g2n fm6wg* ..wqhdanding wave is set mhw w6/ 2g..qwg* nnfdup. 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 8 ;amtyt/o+uzL 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 8z; tomy/atu+ 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 len:arl 4r wuyhf6n/( es3 /sy69y; vfnhggth 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 st3n/6g4(eh9h ylsu fwv/ 6f ;rysnr a:yring 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 spe:ox ksaj -+y1ked of a wave in the string is v. Wha 1a oyxskjk+-:t will be the speed of a wave in the string if the tension is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wave. As an S wa cxzrgk3 ;)jwyr/v 0*tve travels through the Earth, the relative motion be xt)kjc3/r0;zw rv*g ytween 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 uww5v3p4i l xsmh7hs2/)agr44x1 b tttravels through the Earth, the relative motion between the P wave and the part s7t4s)rh wwviugb4 l3/2 4xap1xt5mh icles 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+o w(hapb.7ongrb/)/ 2jxc-ubdf+ srs

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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 b:xlwcr*p/l )qm7i.b thin cord reaches a discontinuity where x.i)wpmlqcb:7b/rl* the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal pj5q kmt o7+x3gositive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the s7xkt q+5mj3ogame 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 r8z,fmi g2cc )string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplituder)mccigf8 2 ,z 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 endshpcq b cg17yt1w/3sw3, 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 fundamenjoecv.jiz0o*yc;d e85*pu+u emml2; tal frequency of that string will increase by5ji+.mjde 2; 8 *y e pccuou;omze0*vl 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 s:1py9 j o7 shewp.z-setretches 2.00 cm when a mass of 0.600 kg is suspen7jo -sspz:ephe.yw 91ded 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 o(3, 2dptmwdj4skuv 8af spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the masksa p8td,wdu(j 24vm3s 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 spring of spring constant 60 N/m along a horizontal, neg ) d,ckx(57jtnvv; 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 thec;vgnn,xd)5(k7 j e tv 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 sprinz yxx8ex-o+ndt6vr* 7 g constant 60 N/m along a horizontal, frictionless surface. The spring is7n8xx etxy+z-r* vdo6 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 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 59uns qxq .yrzl4:ylq;- cuh8 SHM. It goes through 10 complete oscillations in 5.0 s. What is the perio-q nz yxq;4l89h:qlru.cys5u d?

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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.1uzqqy-t r)g0ng3jes 3b yr2 end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m.t-.)qsyr3 zeg3 q0yu1jbr ng2 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 conq7o6qb9h22nqstpsfl61g 1a cstant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motiobn 6p6 s1oql7gc1af2qth2sq9n and has 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 J at this time.* tb(rg(b ksw: The mass is cut in half, and the system is again set in moti:tgs ( rk(*bbwon 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 constanteo;fd t n(pexy1ez9.) 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 equilibte(f.) od z;pnye9xe1rium 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 horsdyb/ulg k 0qn4y;(ap5 *:thr izontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed o5g;0 *k(l/yq:dpnt su a4hryb f 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 horij5l-zcbmb ,0 xzontal spring of spring constant 50 N/m and set into simple z0b,mcl-bxj5 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 the end of a hf31r e2t i4pmiorizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. 3124f tem iirpWhat 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 sprejo 5 vtm: t;c0x,+dpjing constant 20.0 N/m with an amplitude of 0.2 tp5+ mx0cv,eoj;t: jd50 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-and4omy 1c fv:t75h s+txq-spring system is displaced 10 cm from its equilibrium position and released f+hcystqvt 14o5:xm7 . 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 attached to a spring of spring constant 10 N/m. The obj75zzilmpc zk+vhj 5vs, /.vx6 ect is displ hsz5pxjmv, i5vz7 .kv6zc +/laced 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 attached9ok1 pc/q+)q zpoq5c l to a spring of spring constant 10 N/m. The object is displc o5qoc1 k )q9+/qlzppaced 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, dis 7qk+,/5ba5m l :qzr+ ptjdmpiplaced slightly from itst +d/zk alp5jp,m7b5r:+qq i m 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 oscilltxlgipwca7t0l7p p71cj * 46nates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm frl1pctptpci76 ag*wjx n70 74lom 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 h8dm8x+aiaf 6to different springs. Mass A vibrates with amplitude of 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 +mai8h86 xfaddoes 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 equilibriubbdem1kpp 6sb no;)5:m the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calcula);m6bppkod: e5bn 1sbte 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 strehuno). brq48 ttches 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 eneb4q)nut .8horrgy 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 onuu 4j323r) ntwogz,4fxrpa, q a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cu 2x og,a,rt4rfz)np3 ujw3q 4m 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 mog *1bh f32sx -)mc ;ketf(lemation obeys the following position versus time equation:hfm3;k a me fl *(e-)tg12xbsc
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 vs9.e/j-pwb nposition versus time equation: /spb-n9jw. ev
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 kprl e60n o 2ml4ejyim3)+jl2obeys the following position versus time equat+ e42mnem6o2l)jyl rpi0j lk 3ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harm+l-h p9lh1uvm8 zwzi a*/v5,;bam yp fonic motion according toalm1zh p+*v8 -y zw lv;i59, h/faubmp 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 with a forceu5 *4rg-yz83gif zqkb constant of 20.0 N/m oscillates on a horiz*ubzzg3gy45q8r- ikf ontal, 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 i)wtv; z9(pz(q xu2uhgn 8.0 s. (a) What are its frequency and periodh9)x(;uzw2zv gq tup( on Earth?

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m long. What is its period 6xgme52g9h.bo 3 yedbon 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?rl9is/23y1tm in hv i-

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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;vjw.nv 8naa5 s period on the Earth v;na58an. vwj?

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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 isywpvr28/ bj; n 1.0 m long. What is its period on the Moon why/v;8nrbw p2jere 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 spherk .n5zwl p2 fbd(ajc -cd6*x/ :lopel-ical 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. Whp fc-/ lac 5nz*o6jd-.xpe2l:kwlb( d at 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 2 b/ gmqr. z8yh5*2nogo0-g mass has initial angular displacement of 8.0e. It oscillates with a period of 3.go/h5 b on*ygr z8q2m.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 give10ch:)i7(cbm-e+q8lyfan g0 hrk inbn time. The frequency of the wave is 120 Hz. What is the amplitudn b:f0cm 0yh h e-(icl+7aq1k br)i8nge?


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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 r :f;,lh kl1tmd d;d/ra wave at a given time. The frequency of the wave is 120 Hz. What is the wavdtr: k r;mdld,1l/;hfelength?


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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 w/10h1q 2v (cdk*ka.cc lltndp ave is 120 Hz. What is the wave spec11(nc*vkd kl. cq/2lh 0t paded?


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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 wwcrc2a u4 x1h2hg2pl6 hich 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 w0 ss8vo1m.tco,f1xw +z wn /zwave 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 a 1eom;jv9*e49za/ zl c2j pz 3rvqv is9xzhg/7nd a wavelength of 3.0 mm *vgjzzvxj4e91 rhp z/ eql 9zv93ao;c /2si7?

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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 wavelenf(h/q- 2yqqh xgth of 3.0 m and a frequency of 1xq(f -2hhqq/ y2 Hz?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a 2.5 mh dvra2;gexe-,zx 4r ) 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 o-sota+ el1 ftsso. bmf +3ggjmi .8r4;f 1350 N. Whft1sb8isog g-3s;4m +tl e.ja.o+ fmrat 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 6.0 g/m is under a tension of 180(bnzi)w t c08i N. What is the veltzwii 0 8b()cnocity 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 dx8 .vj ced5s*nown a 500 m long wire whose total mass x5v8es*c.jn dis
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 w d78jvq(vabwli 9w)/e/8hpifixed at both ends is 200 m/ wp9 av)hjew8/ib7w8 v (/idqls. Which one of the following is not a resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a fundamenj-w-.ouq v 5qutal frequency of 500 Hz, which one of the following frequencies can set the string in.--ju5oq uqwvto 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 in a standing w*l)gdpc1bal1r-9 i7ovk ik2aave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave withad1or-l b*lig12) c 7p iv9kak 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,-c wyx 9chn3m- vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave patw-3 mxc-yhc9ntern 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 densitw*fhzz (x( (g4zhxrr 3y 1.5 g/m is under a tension of 20 N. What should its length be if its fundrz(*z 4 h(fhrx gxw(z3amental 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 of linear mass density 2.00ny5d gmkqsiq)lg5 c,8ct- *l0 g/m and length 0.600 m when it is subjected to tension of 50.0 N.lc )t8-ydqkmq lcg0sign5 5*,

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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 -28s)n nr hfe9odu,thstring vibrates at a frhesnhr d ,t892uf)-onequency of 85 Hz, a standing wave with five loops is formed.
(a) Determine the distance between two adjacent nodes.
(b) Determine the wavelength of the waves that travel on the string.
(c) Determine the velocity of waves.
(d) Determine the fundamental frequency of this string.
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