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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 wpz*gu dq k988a 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 oi+u g4(uh/xn 1zpn8ivf 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 displacement from t6kp ,9w npqmqt) 1vni,he equilibrium point is c , pqq1nv)9tnm,w6 kpialled 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 Sx5)t1m+v3za. dei grpHM. When the mass is at its maximum displacement from equilibrium, its instantaneous velo1pvaxt m)5d +zr3 .eigcity

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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 e at9uzs.h:i* kquilibrium position, its instantih:*zs . u9atkaneous 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 displacement fromg5 7n )z ;zldluio: ahnj7*7as equilibrium, its instantaneousgd naoia: julh7ls z77n5)z;* 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 downdt);5z6fv4y :0zfntoouzj6d between points A and B. Where is the mass located when d fn tz 560)v:zu 4tdjo6fozy;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 points A an4hjp kl)q,ybwfl3 9;u d B. Where is the mass located when its kinetic energy is j ulk9ly, hw34;qbp)f 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 between*+m/ d)dscaim points A and B. Where is the mass locateas imc+m *d/d)d 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 spring and bobs uphz4ssz(/ vda8 and down between points A and B. Whah ds4/v(s8zz ere is the mass 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 amplitud9b-4ldvjfd; b e of a vibrating mass-and-spring system produces what effect on the system's mechanical enejd 9;dvfb-4lbrgy?

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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 v y wck8 yy,b;gp,n/m;qibrating mass-and-spring system produces what effect on thep,y; k;cy,q 8nw/gbmy system's mechanical energy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring constant of a vibrating mass-and .lxhbl-653tqi uz:qv-spring system produces what effect on the syst5 6tq -ilhl:.z 3ubxvqem'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 spawik r*dbu, -/x-gxm, zeh3p9ring, both on Earth and on the Moon. Where is the period the greate* pzb x,hmw3-,9gx/ia-kr u dest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constan01 hyge.xvuaqtt:f1( -om4a at k of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (As.mgaah4tyxa :otq(1e fuv10-sume 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 syste/hi d(0i5qf pam causes what kind of change in the resonant frequency of the system? (Assume no(dii q50a/hp f 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 causes what kind:rr.g te 9d*cn;iu lmfgz9.8 q of change in the resonant frequency i;lc*r.enz. quggtf: 9m9rd 8 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 stasypz 8y2u /7g7d r9vcg-jk2m ,n2nq fring of length L. For this system,zc/j72- gy 2un9g v2qank7r,p8ydm fs 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 tripledvv,ko b p41i.e, the time required for one complete vibv ie,kpvob14.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. The period of A is T )oap3- s3 9dtdldccc*. Pendulum A is twice as heavy)3d c3l-* ts dpdcca9o 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 timmu)+k*oj0 kt 0a2 nsyuxw/+ae yz, d1ue for one complete vibration increases by a factor ofe++)z kn1ua ,uatmwk2 * osdyj0/x y0u

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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 simplec9j 8aog;gdsdw f299 z pendulum's frequency if both its length and mass are increasg sc8awd99gfoj ;29 dzed?

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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 for p9,d/2vl hj,ijfzl f9sjo-k (th at twice the frequency of simple pendulum B. Which statement isso(kj 2fz dhf9/jp,llj v-i9, correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the acceleration of gratg;-+.mu sxn kvity is less xmn;g-ts k.u+ than on Earth, the resonant frequency of the pendulum will

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 representsjzi655 d e9zxc


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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 represent0bl.ofj 2 5lv 4mxc3uos


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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 represeab)oxoo8 q6b4 +;glwscax 2o+nts


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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 amplitudl4 0vtg,3;fa a zjfk344 xmjgxe 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 equilibrt2 wx-bj*e1el ium is ca-et2 jw*e 1lxblled 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 betweenqgf2 p;-dk2ml blt5 7gqk.7bnc3t ;aw 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 is c m9gbc cn./ n.r4lea:ualled the wave's/.b: n. 49urnglm ecca

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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 frequ7 ua, rvoj ywc8:g:d5eency 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 happens to the distance bepn 8548n6)i;u sz+lk,heu m n;ubwxketween successive crests i i;uzwu ;mnh5 , u+nks)e46lnkxep8b8f 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 wave2 1afs egz75ielength l and frequency f. A second wave on the same string has wavelength 2l and traveia ef7zeg5s 21ls 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 tens5/y 7hoh ij;opion T. A standing wave is set up. Which of the following is ip 5ohh7o/y;jtrue?

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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 c+9w eac 42yfflength L is under tension T. The speed of a wave in the stri+f9w ec4 2cfayng 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?

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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 ten7 aq,s, q-kqeqa h*o qyd.cu69sion T. The speed of a wave in the string is v. What will be the speed of a wave in the stq9kc u7aq dqo,q.ayqe6-, s*hring 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 wave in the sb.3 vl 71vagj*2lma mstring is v. What will be the speed of a wave in the string1vb l 7.gmsjmva *23la 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 wav1djz(*udo)- pw cnrqk :jn1o)e is a transverse wave. As an S wave travels through the Earth, the relative motion between the S wave and tn kj j1:codq1) z-wpn(o)u*rd he 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 trave4 mn )s0h,p*fqcnb pub0t93sa,; seosls through the Earth, the relative motion between the P wave and the particlesb3 sch*fe 0 4;mtu as)n,pb0p nos,q9s 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 7;:k dhlauq*a 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 a thin cord reaches a discontinuityuw.,l;4-eu j rif(k-agjk c5y where the rope becomes thicker and heavier. What is the orientation of the reflectej5 4u;,(k af-criygl.ju -ew kd 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 pa sbvsa7d p8v bek9(21tzc w *dovs,+y6ss each other on a string, one is traveling toward the right and the other toward the lo b1y swvszd( 2ck,d9 sva7tpb*8e6+veft. 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. The one traveling toward the righ9jha.z3o 0segni+pm8 t has a positive 8n0 jez3po+9sagh.mi 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 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 as5agdd8 05e ej,( 0myol3tyuhh a string fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundam /b+qy9jit.at ental frequency of that s t9a q/btj+.iytring will 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 const-p3w 1)hqr3laj0qc up* vsi+bant of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended from il*urq3w +pi1vc3jbp -qsa)h0t?

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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/m along a horizontal, fv rf6 y7r*bma(rictionless 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 oscillar7(v*f6bm ryating. 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 constantb) b,cu v 291jgpnczn* 60 N/m along a horizontal, frictionless surface. T,c)1 zjg9vc un nb*b2phe 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 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 a4/0es,rjuj mconstant 60 N/m along a horizontal, frictionless surface. The spring is initially stret0u, s ejr4/jamched 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 SHM. It goes through 10 complete oscillationc0lp;o1 -bqd y -2wlvbs in 5.0 s. What is the perl-qlvw 2py-b bo0;d1c iod?

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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 h: wlnnj, ea.,forth from the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30nj:,wn .ha e,l 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 jwo)5vpejjvr 9 64 o7q20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the total energyp45o 7rjq9 ejvw6 )voj 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 am.c vpdvvzm9.ae .7e w-plitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set.pe9.w v.7z-vac e vdm 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 att7 9u;4ph qp(o;qxlxryached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object xxq7l(hru; p;po 9 y4qoscillates in simple 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 c1:4 q fz gyjhdf)u971nzwnf1ponstant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.q 7114jf n9 hzuf:dwnf1zy pg)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 horizo4kg/fnkmv)f.w) 1ufyntal spring of spring constant 50 N/m and set intoy .kmgf41uvkw f/f) )n simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horiz b-7o7asia c,sontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this saao,ssbi7c 7- ystem?

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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 i x (aoovt2 2 :)hnp4)elxf(gfspring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy o)lthv2f i4o g(n f:p2()aoxxef 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 diskxrx47 8k :p+ x-xf8sey enn+gplaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced onlxxne fp8+gsrkxx n74 -y+:ke8 y 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 attachhb5iow x6*t3zed to a spring of spring constant 10 N/m. The object ix*wi53t bho6 zs displaced 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 consta w(m7hzz,3e6v .olo cont 10 N/m. The object is displaced o o,.wmv6 l3ho(7zzecby
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; u axvko ve5gm thx 4y)-lr/x)8(xf-p 18 N/m, displaced slightly from i ;)koax v) e5uv/yfxxrl(x-t8h gm-p4ts 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 oscillates at .v 4u n).1kiy61pfz n6hluzsoa frequency of 1.27 Hz when displaced a d .66s u1zypzfvklhn.uoi) 4 n1istance of 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 atc):fokz xndi.5icij*6x ml u 7t0,rw2tached to 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 does the maximum speed of A compare to the maximum m dulfc,2)wicn iitkz j5:r x0*ox6.7speed 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 the mass stretches the scqpn a 2dk7wp7oc,r )v,d,vr*pring 2.0 cm downward. The marckw v7n2d7cq*a )o,r,,pdpv ss 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 stretches tyomfkc,f ug (36i+p8qhe spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released fromoi3f+gy(p6 ,c kfmu8q 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 equilibmlfgx 63+n3+qcd; tberium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and releal td6;+fb3n+ xcg3e mqsed 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 posi9q -:p6a++ orscbwyaation versus time equationor+ yqawc:a+ 9as6p -b:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 pos)l (nst- laa62jxlwwa n8 mf54ition versus time equatlajxw n -2wf ll5t6 am(n8)s4aion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motqxl2zf sgjhvw* m0,.hvk., w9 ion obeys the following position versus time equatis. 9 xjvzm 0kg2,wlh .w,hqv*fon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 -0w76l lugvzfop*mu )harmonic motion according to the equao7p lmlg *- z)uufvw60tion $y = 0.50 \; \sin (18\pi \times t)$ 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 20.0bjwf 5aw 3a:f,yx, r86o:cofw N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is xfo cb3rjffa6y:,8a o:w5ww , released from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings in 8.0 s. (a)mop /45vr3ufu3zfp/ s il.c7z What are its frequency and period oou7 pvri3lsff 5zz/m/p c.34un 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 i2o) r(bodkc )5df ht*f4q/alvts period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Earth. What is its lencw ydrq /3a7253 khmbjgth?

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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. Whw1b;m+f.e z:a ;ai5gw zk7rusat is its period on the Eart ;w+1zeu:b75wrz . aamkigf s;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, m 3in/p khxz0ddb ,q9an:hk7. What is its period on the Moon where the acceleration due to graviikzd:n,mn hd3 b/h0q 7 ax,k9pty 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 sphc7e:wfm 3(o,f: jiulterical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, tm(lo u:we3jif,fc 7 :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-n)k z2ay*lw+y r2c y1 ,tzu-5jq.xlqlg mass has initial angular displacement of 8.0e. It oscillates with a period of 3.xqyuj,2-5t 1 z)yyaw*zk ll.2l q cr+n00 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 x,)y5ek g zpcouqz8 (say-s2;given time. The frequency of the wave is 120 Hz. What iop,a;8g( u2seq ysz zy5x-)c ks 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 of the 2ox 1m;3rg tkl2kgn2 twave is 120 t21kgo32tmkg xr nl2; Hz. What is the wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" offcp/ -hr * -j,*eqyifhyf(0x t a wave at a given time. The frequency of the wave is 120 Hzi tfc*(y-fj hf,y*/qp- 0hexr. What is the wave speed?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency 2- w/m vccao5m xmd59xof 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:e7sl 7g-r,vczdim kauxf321 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 frequencez/o w w b8f3 x*)i5qcrml43*go-vxiic0ue j6y of 12 Hz and a wavelength of 3.0 8lzx3xo5o4r 6mei*ie)0vw u3bg wcq jcf/i- * 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 of 3.0 rbumyv c*78n* jg)y2pm and a frequency of) njr*2py7 y8 vugbmc* 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 1400 mzypx+8xy f;b8q0ssj :/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 linei6zi0. nu( d8 dflvwx,ar mass density 0.0050 kg/m is under a tension of 1350 N. Wh0i 8fzd,n6xiv (w u.ldat 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 N. Wha2c1u/:tihb q yt is the velocity of propagation of transverse bi1 c2qtu/h:y 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 travelintm u+xiwmz;5,-zxp 8t g down a 500 m long wire whose total mass is- 8 uptmz,mt;xi+w x5z
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 ll0qdjs,s:f 2z ong string fixed at both ends is 200 m/s. Which one of the following is not a resonant fflq0: 2s ,sdjzrequency 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 a5g s ;u: hp2rmi88aui-k v/rjq fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vibration?pv8u;a5u/jmrs- :8ghk i2qi r

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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 se.:mq3ws 8gk(za7w mqmgments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal segment g7zmw8aq3: wm(qks m.s?

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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 standing tkt8i 0 -h78i,reohpgzransverse wave pattern containing 3 loops. What frequency isg0e8h, 7kt oh8ir-p zi 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 unb2ty t:p 6i/da3*-m*)kp wke8ffzgox der a tension of 20 N. What should its length be if its ff-z :y3*pfep8 /t xa* i)kwtmk2dgo6bundamental 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 harud0*gn sstjj--jiod231 alw -monics of a string of linear mass density 2.00 g/m and length 0.600 m when it is subjeja -d0id2j -1gws* t uj3nsl-octed 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 + *r ur,okj,ethet /t3both ends. When the string vibrates at a frequency ekur ,t ,ehj/*3t+ortof 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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