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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 cycdvpt3 p6jft+3le of a periodic process 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 p6 ,o m0(wnslyj+4g ukg802ogrhe t1i :ehil( 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 disl0vy7:dmp ( mnub 2ae9placement from the equilibrium point is called euyd( m7 ab 9pn:vml20the

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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 n92nmij0n6aab p 0n 0othe mass is at its maximum displacement from equilibria6nj noi bn0a0p02n m9um, 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 equils;:t8os 7on :yilk/ dbibrium positi; :8sndkyt oolb/:si7on, its 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 undergoes SHM. When the mass is at maximum displac9blk u di2)*eaement from eqk9b2ul) a*de iuilibrium, 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 between points 8a b2 7zs,t h-;vbcpnn7eax1 *iboyg4A and B. Where is the mass located whee2xg 4-c, 1bnyhb7o7v sazi8*t pn ;abn 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 veip+o wk+,o v-s2h7nnlj kvil8e4qg/3rtical spring and bobs up and down between points A and B. Where is the mas op3 -jlgo/ k ikn+liw4+,h87 nsvv2eqs located when its 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 ;wucxcjx axf,9)m :6pn +yw c4and bobs up and down between points A and B. Where is the mass loxn4w cxy)+x; 6 cmfu9pjcaw:,cated 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 ve ib0,*j9skbyj rtical spring and bobs up and down between points A and B. Where is the mass located when its potential energy *b bjiyks,0j 9is 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-andoo:sbuc: eq7(zueh 74yj/ 5yp 1+s ttd-spring system produces what effect on the system's mecetjd5 y7+h/ys q: u(1o:ubszte p47ochanical 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 86sl,b0 uvqne what effect on the system's mechanica6b l8uq,vsne 0l energy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring constant of a vibrating mass-and-spring system producen7-r /6.mt reekec2xtb; h3io s what effect on the system's mechanicalm7 r2ec/ ; h.inxk3-tobe6rte 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. Where .b09gr,ik ox *i+pnqe is the period the qekgb io9i,+nx.0rp*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 ma q:k tn)b b3uwb8va7u9o. 6wxuss-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no cha3)an8bqw6 kob9uvtuxw . 7b: unge 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 ca39f*(h9t fvpwg * onrauses what kind of change in the resonant frequency of the system? (Assume no chanpnr9v*a( g *3wfof th9ge 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 causezsxt,e:zf+ :. ep pm)js what kind of change in the resonant frequenzx+ z)m.pptj:, fsee: cy of the system? (Assume no other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a mass M attached to a weightless string of le z cwmrgr c.;0/ 8u+9*cmrgljongth L. For this system, when undergoing small oscillationclow c;0cr gmr9z *+m8u.gjr/s

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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 requi12px tid+- ewired for one complete vibrtx-i w ie2p1+dation

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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 3.0t b hun)lqgnlka4 ,)p /aa9+;n m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the pht aqk + nnlp),4gu)9alba;/ neriod 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 completequ xsc,ju fwl6/2 (h1y0s3tct( g;owx vibratioy;t,l3jc( cqww hx/o12s6guut(s0fx 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 2 k,l7dkto0r:a twpr3r -bp5m7i3wcwboth its length and mass are incbi,7:0rlmwrd a kc753-t w 23pro tpkwreased?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swings8,5 tomodn kp*b:q 2ms back and forth at twice the frequency of simple pendulum B. Which statement is corrobdmpskqot, 2 *m5:8nect?

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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 accely j7*)qesqf j3eration of gravity is less than on Ear*3q )js fqey7jth, 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 sy-(m jhv*k.j


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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 representqo dk96k9f /gw i6iali ng3f88s


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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 represkk sy 2k;hiu8dc3 n;,kot +hm;/3 :ltfm ch7bhents


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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(4d+bnz6u g9umcgsm pl-g /(r, the amplitude of vibration is found to depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of points of the wave from equilibri-np k..m8jj tfd3k0ja um is called the wpmjndj f .k-.kt08j3aave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance betweenxai4r . *ydqchh2kos(ole fz31oo*;/f 3wu9n successive 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.lf,36gzw dng is called the wave's zdfggnl. 63,w

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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 freq:3ivn dl43xjquency 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. What hh 7y8p mz+thy,appens to the distance between successive crests if the speed remains 7h8z+ymh tp ,yconstant?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a string with wavelength l and frequency f. A second wave on t x++iqwn -u 1qnng7mvr7z *fa6he same string has wavelength 2uxwnqzq1 +* i6r7 g+ fn-7vmnal 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 M1i xslnz-+e1 p, and tension T. A standing szl-1e1 i+n xpwave 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 o hd7 m:l7q ,tnno5fuj5f a wave in the string is v. What will be the speed of a wave in the string if the mass of the stringnhmjto7ufl5:nd 5, 7q 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 under tension T. The speed of a wave d83vh9 ldmi+ hin the string is v. What will be the spee 3d8hdivhm9 +ld of a 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 length L is under tension T. The speed of a;q+37mc obsek6jmlr4s zn 6r: wave in the string is v. What will be the speed of a wave in the zoklr;c b:me s6qmj 7n43s r+6string 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 mc zvjr:cyc1f )clfeo:*9b*i:ft 8 * nan S wave travels through the Earth, the r*bol yf:rz* c) encm:*jcvi 19f :8cftelative 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 longit qe 0a iws ijnrfc-xzbms;,3y0043e.7o7txbuudinal wave. As a P wave travels through the emjzw7-a34bf o0cx0ru70 n ,y e.qbsix i3;ts Earth, 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 waveic-wkz(cl6 i 7 is

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave pulse traveling to the right along j3nn0w ta68n cokb9t1a thin cord reaches a discontinuity where the rope becomes thicker and h okabtnn3 c1wj0tn968eavier. What is the orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positive amplitudes7ac q,0/ nqn9orpm -dv pass each other on a string, one is traveling toward the right and the other toward th9 0qpmc/nn7a -rvoq, de left. At the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. g6tui7uzuq8u + oz 3utroe/ *0The 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 at the same timeit0r+q tgu*3ou ue6uz z87/uo

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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, x w+ 8sz.jg aldtdo0);ma7a2hoccurs 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 ofb9ru/ix9r+f z that string r +z 9bxrif/u9will 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 when aglg/v4 3 z.vueexo .w k.a1r-d mass of 0.600ekx /od1g z.v-lu3 regvaw.4. 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 spz( jsbrvilfct.5zh v164 ,u: wring of spring constant 60 N/m along a horizontal, frict 1(4i6fw jruls:cvt zh,z.5vb ionless 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 spring of spring bo;:dx/p5xmcm r4te+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 t5 xo+remm;b4/d:cxt po 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 a horizontal, frisaj0/jrx ,avba x2 e;.y,qf+ictionless 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 equ2aa xib,v,s+.a0rx ;e/yj qf jilibrium 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 compl .sc y qsfugr-3:ywrx33si* 2iete oscillations in 5.0 s.3sxrwsi. y3-3u iqc * gr:2fys What is the period?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the fr ztqpzd7;bx08 ee end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. Whatd7 q8xtp zbz0; 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 constant 20 N/m along a horizonbehvx6+6jtobzc2 gs 4 .we9f(tal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the total enerjx+b6seg 9 eh.4 f(t2wczbv o6gy 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 42/-9a.p* gumzrf/b j pqdknn+ cm. The energy is 8.0 J at this time. The mass is cut uma.g9dnrzk /q*j/-pfbpn+2 in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a 8s2e ifu a32jse9k6 jvhorizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the amplitude of vibkuav 8eijs2e2f j639sration?

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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 hobo wek83 4c 5drj xi6u: yd6tkx,r*wx,rizontal, 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 aredtrkx,: bj4 x 3wce6dk*u r,i 5ow6x8y 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 t/ 5ugsn s)t-; tv7abjwi)re y -e9gs(of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with ant tw5 s u) (/yjsr)es- v7gi9;-tenbag 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 attachu* v3pa13rk;kuc gn *ked to the end of a horizontal spring of spring constant 50 N/m and set into simple harmonicuv p*k3 a*1ucg3rk;n k motion with an amplitude 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 sprwp5ggc.n s*5ss r *z:wing constant 20.0 N/m with an amplitude s* 5*.rg p:5ncgwwzs sof 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 zel.78 87mj a v 4pcjb6fwoqvwnqo6+8its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced ojl8j +eq .7 7qfcw v6pm4b8onzvowa86nly 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 sp+noe4v0e ( cz v370nxqxbly -kb:ht48xa, sbqring constant 10 N/m. The object is disp ( +4abe exv3x,7t-b0xn4lqc0yos kzn 8hbqv: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 attached to a spring of spring constant 10 N/m. The objecr xwcuvk*4 ;wa5vr)dp8;e m+ft is displaced k4 *xr+;du vp;wwar8)m5 cfve 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, displacf1oix285l/ - yl4fg ub nx.preed slightly from its equilibrium position, and released. What isfi1 .fxl e8lyob5p/2nu - 4grx 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 oscillates at a frequenm 87+9ztbeyf scy of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. Whatt7e9bsm 8 yz+f 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 attajcu0f52vp; h bched to different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitufuv c 50p2bhj;de 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 equilibr;za5q m qb qmhuua -8(cq9e7f.ium 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. Calculate the period of oscillation. uz hqmc-7 m.f5 ue(a8qqba;q9

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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 bzf7d ,2i :kyvspring. In equilibrium the mass stretches the spring 2.0 cm dowv2izk:, fbyd7nward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mass stretches7xp0yhkg/.0d5 p gy ww the spring 2. k0 g /hdw.yy5x0ppw7g0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obey l .2mrkf -9a4lidi1kps the following position versus time equatir al1m p2 -ik.fikd4l9on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harot 18h .pmuaus 8-(4hkpn5rtmmonic motion obeys the following position versus time equatio1ak uu4.8no 85 (tp mpmh-shtrn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 thehu q8 9iki71uhvk9 dh: following position versus time equation99:1hvihh k7kqd8uu i :
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 6s6zlhqk u 9zt29sf ;gp2s f2-yutcy*simple harmonic motion according to the equation-fs6y2h2z6s9t2gktu fz;*us9cp l qy $y = 0.50 \; \sin (18\pi \times t)$ 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 wih b4n0p hbnm7(th a force constant 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. (That is, the spbhm7nh0n4 ( pbring 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 frequency and ) w/c61iszsb gjd3ef8gxy1g )period on Earth68x )1 s bsfieg1 wj)dz3/ggyc?

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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 isd ski2u/6y tt5 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. eypwp 8ly*- v,What is its length?

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather clock is 1.0 m long. What is 5v *gy ugbajouu83+ y*6h8 ic fp,o6jxits period on the Earthg i5o 6bug8v yjc38fha,u pujx+**o6y?

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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 grandfath 16:mwhl5r )g dq9uwdver clock is 1.0 m long. What is its period on the Moon where the acceleration due to gravity is onw6qu )gd9h15:dl mrwvly $1.7 \; m/s^2$?

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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 spher ku)t + bp*xonwav6(l cb::;pjical 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 frequency would hpc wo+xpb:v *:tu( 6nlajkb); ave 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 angular displacementyz;(oehfsh73 vx ;8oz 0r+z6nszcs/c of 8.0e. It oscillates with a periz+o(xh/7f oz3 0hs; vz8n yz;c sserc6od 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 tisg5b2+e(bo .-y q tgqxme. The frequency of the wave is 120 Hz. Whatb(g 2 bqgeo x.s-qty+5 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. The frequency of5 4nw6gaqri kie95: pv the wave is 120 Hz. Whiew 4akq5ip5vn rg: 96at 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 7fhkka*f,9 egat a given time. The frequency of the wave is 120 Hz. What isg kfhk7a,ef*9 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 bqxm9 ( jwddy:q::u:mof a wave which 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 brq,dlfn :k wt* 26y/ufrequency 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 waveb,d4n /:8o2iajs iey 4,pqve j has a frequency of 12 Hz and a wavelength of 3.0 mbeo4 8/as,:ev,p 2idj4 yqnji ?

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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*uy8qoqm 8lf;b q2r*y of a wave that has a wavelength of 3.0 m and a frequency ofoq q*uq;yf2y8rmb*8 l 12 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 m wave traveling at 1400som;- i lw/6co 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 tensionj(d6sdo 3 z gdtih.:(w of 1350 N. What is tg od.: d(hwdiszj3t(6he 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 6 8 wex qn2uuw0)3aaiwduuz+0 of 180 N. What is the velocity of propagatiodq) uu600x nuwz238uae+aw win 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 tra (*(lq+tdrcr xkd7mb 3veling down a 500 m long wire whose total mass r(c( d7tl*qxrd+bkm3is
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 tra jk7b(g df lqrs8*1y5a sk(,w0erqu*w nsverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the fray758sekswkf (j d1q g0*wl r (bu*q,ollowing 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 funt kz5;v 6:5hssy), h1owr,qk*58a zk ayvzkqhdamental frequency of 500 Hz, which one of the following frequencies can set the string inra5y1z5v zk kq kyqo5 ts,*;vw8k):,6s hhzahto 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 segment4:wu59yn5 oc lxb:wa os in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standwow 55:al 4x9 cu:ynboing 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 1* pe95 f)x*fd/dukpev2 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing exfd *d9k5f u)/ ppe*vwave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 1.5 g/m is under a tension of 20 N. What n ypqtoy4hzm.8-ze kj n*3t 25should its length be if its fundamental resonancytn-mt h48p2nzqj yzk 3o *5e.e 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(+jngjcb7* dlit ug4(totbin+ y1 05s density 2.00 g/m and length 0.600 m when it is subjected to tension of 50.0 Nb si7o(tgc tn1 j40lub d+*(yt ij+ng5.

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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.;-tmg 50tq7r:k pvauo 5 m is fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standing wave with k;u-t rtpa:mo gv075 qfive 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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