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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 q.bgjl8z /wk0;uoc*(+ntmuf 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 un ea 5w8ookp97dq /w:apit 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,eoufrqt:cug s55w 1hrtw 0vim9i *4; * the maximum displacement from the equilibrium point is called t u: rmec4w9iugi;q swtfh o0 vtr*51*5he

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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. cm1l3p 6f5wj gWhen the mass is at its maximum displacement from equilibrium, its instantaneow 3 lpfg1j5c6mus 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 thr-,*hzqczln w,aw(:2 9t vgr ycough the equilibrium position, its instantaneous,r z:2tlhczn-c * ayw wg9q(,v 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 maos2;ufii ,9m54vu ag r aznru 2wld;+:ximum displacement from equilibrium, its instantaa 2du fmvn5i+;gu,; irwa9uls4z:ro 2neous 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 ts;nb0j+a.v 6*ggc su3zmv 6ebobs up and down between points A and B. Where is the mass locc3j g +6*; amz.seu v60gtbsnvated when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertica) zf -n0 q81r0 r5fbb-eyavthvl spring and bobs up and down between points A and B. Where is the mass located when it08 abb y1)h-f5vz 0renfvqr-ts 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 an qy+s7v(1m cv:jkp,uad bobs up and down between points A and B. Where is the mass located when its potential energy is a minimu(vqs p,vc:ku+7a y mj1m?

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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 up and down between points A a tkd; i3sxhs c98m/ujz, f/1rbnd B. c8zd / ,3/subkhrx9 1imt sj;f Where 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 amplitude of a cko3aj;,j .n0jvtkd 8 vibrating mass-and-spring system produces what effend3jo , v0ck;j 8k.tjact on the system's mechanical energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-spring(a rqpwwk6l/ ;v jb;z- system produces what effect on the ;-v k ;a qw(lzpjr6/bwsystem'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 sprinamgs9 yk9xix i/ qnn8/g ,zy;4g constant of a vibrating mass-and-spring system produces w,z994ayxk i8/ m nsggx/qni; yhat effect on 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. n.,d cgwyy8iwq*v+ :y Where is the period w n8+gq : ic*ywyyd,v.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 snv ah86u dn(ormi* /p(ystem causes what kind of change in the resonant frequency of the system? (Assume no change in the system's mass p((du6v mr*n8ai n/ hom.)

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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 b87wn bgak(- b.m*zzl k2jc6y:;hgrfchange in the resonant frequency of the system? (Assume 7a.z:jlf-b (6rc wh*gmgzk;k2by n8bno 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 sykbw(27o a ke )k6bm-g)he s 6ziai2c/vstem causes what kind of change in the resonant frequency of the system? (Assume no other changes)2 7 vki -e(zkae2)b/awo 6smhc6kg ib 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 str:eo4 f0;vp1 dt apc79cyxw i+zing of length L. For this system, when c1cw 7y:p4fvd+ape z t 0;xi9oundergoing 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 pendulusv,4/ phe-bj,uzi za5m is tripled, the time required for one complete b,j ,p uiz5/-ehaz4v svibration

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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. Pendulum Azdxm c gx9*79gj 6aft*8b1pww is twice as heavy as pendulum B. What isj8b*a*x79z wg6gc 1 mf9 dtpwx 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 pend9;vy,cpscy d/:vu.r j*0 o czyulum is tripled, the time for one complete vibra9cycy/ ., oyvu0c;*zvjs drp :tion 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 bojl d q7,8ft :m+c6cwnith its length and mass are increac d t :+inqcjwl6mf78,sed?

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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 h3x8o6sco o(eback and forth at twice the frequency of simple pendulum B o(xe6cso38h o. 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 aehyaezf,e m//00e,ah w6n p*9wehy p*cceleration of gravity is less than on Earth, the,0mfa /eep phaey,* ze0* 9eywwn /6hh 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 represzzhap;p3c8 (v:304 g vx9yurog ynns ( eml04tents


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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 represents, xq9b w09 dpzzm:a0x:sttc4l


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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 repruvrk6f wx :ia3e2/k k9esents


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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 v 7*cogoqpzih; 2rvy;gjz6ja * l w/+4pibration 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 equilibrium is ca7+ i z. him kgmt*a;+zt;7gdegj(nf2 clled*tm2ztfk z+;7mnj;(g 7gied g.+ h ica 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 successive crests on a wave is called the wa,dd29ocroa* gve'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 unitl8 ) pw1*3,8,uao m)a3,gxhg ia nkt uluwwmv+ time is called the wave'pmx 3,n)t1igku aag hm),*lu,u ovw+8wa w l83s

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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 th3r u1i1ktqddh5g78n re 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 betwec3mij-.rh 0o*p9ug.;rlx u enen successive crests if the speed remains consj- monupe*r.u9gc ;0i3.rl hx tant?

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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 wwg ktd2 4k+2fwavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of the second wav2 t2+4wkwdfkg e?

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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 lengthe 06kgyni y3:o L, mass M, and tension T. A standing wave is set up. Which of the following is okgen6 yy3i:0 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 v wx,9-au14pxcx gaw,length 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 string if the mass of the string is incr9p -c xaau,1gwv4 wx,xeased 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 u5hqp4:: r hz4(j os*ef+ pwbkrnder tension T. The speed of a wave in the string is v. What will be the speed of a wave inp( :+pwh4re ro:*j5k4qsf zbh 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 isz-l1 ip2 oh7 uhequy2/(hxh7 o under tension T. The speed of a wave in the string is v. What will be the speeu7eqxyi(2- /u2z7h h lh1hopod 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 Scfa) 434 *ytg uk)tbxh wave travels through the Earth, the relative motion between ttb4x4)3kuc*yf )ah gthe 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 ymgi*ig dul 0i(:k70 uwave. As a P wave travels through the Earth, theim00gi:k udl ( g*yi7u 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 wave /tlplv: bo o()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 alon+tcae ai1g97x n8*txu g a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is thxa 7g *+98 aexcut1nite 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 amplitudes pass each other on a 8n(b.rf 9 xwqex9rj-k string, one is trae nbwrf (j 89kq-rx9.xveling 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 each other on a string. The one h9/4m/h d sanytraveling toward the right has a positive amplitude, while the one travelmahh9yn s/d/4 ing 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 as a string fixed at bo;0wvpaop , nr2l sv3*gth 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 fundamental frequeno0)s n12v9xj qs) 2i ca,iolfvcy of that string will increase by a facto,xsv2 f1io02l)s ajq)vinc 9 or 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 that6w).t/s mz;wsc.h out stretches 2.00 cm when a mass of 0.600 kg is suspended from izwo.ht)/cw um 6;s.tst?

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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 horizontal8ir lat x0;/oo, 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 lar t o;8io/x0to 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 spring31,j)hy kiijtnz e5lh g ;9 2i.r/mdcg of spring 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 thc3ghj 5ei/ 1 li;9nmyd,g2.kt zij)hre 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, fs(kyfsa 06e:vn;w)sc 9*h uhz 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 posi s ea6n0uc:v hf z;k)s9y(ws*htion 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 comp ,l1jho45a izt38 un7;f-qc 1nyqzydflete oscillations in 5.0 s. What is thefln7a,qoh; c- ui3dfy q1y 51 zz4n8jt 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 free end of an ideal spring of spring cov,vns i: nwm:8nstant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilis 8n,:nvv iw:mbrium 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 springz 2p1 jfup n:noe06tj4 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 at the equilibrium position. What is the total energy ofu0:o2pf1pn6j 4zejn t 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 iz/ yhdu2v(ps3gs6 d7 at this time. The mass is cut in half, andhg76dys/p (usz 32v id 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 spri o v+2)k)dw/mqlb)+ ovotakr (ng 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 at the equilibrium position. Whv/kk )+( olq t2o)vwobda+r)mat 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 constavqvla 41t bgc4u/66auhvq9r/nt 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 equilibrium position. c /4vql1h 6urg9v/bt6a4 qauv 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 horda s4(g /6o ugf4.pppiizontal spring of spring constant 50 N/m and set ints(4u6a. odpg / gi4fppo 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 to)rl;9u0 e /wy( ir4ykui5jwu he end 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 mechanical energy of this euo9ry kwli/)iru u 5;(w0jy 4system?

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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 u 5 k lesn(is.3c4fitt6e *b)yi dca9.end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic ee6(l 4yi*.) a5indfi e.tst bkcs93ucnergy 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 displ n(ctp)f-h; twaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. Whaw)ft(pn;- t hct 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. y8 d 4hhl v /34xdueojk,4v(qzThe object i v43yhqx4,4j e/oh kv 8d(luzds 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 constant 10 N/m5gzk k/. phw 0n/s/avzt5piw.. The object is displace.z0 a/ph k5 5/wn/ k.zwvgpitsd 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/m2vc*q yzbnp,k b ,xu;/, displaced slightly from its equilibrium positbvnbqu2pz x,/;, ykc* ion, 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 a frequency of 1.27 Hz whenll,y +c8vr8pr dispvl c,r+ lryp88laced a distance 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 attached to different springs. xh7uuw h: 2,m+jozwj7Mass A vibrates with amplitude of 8.0 u7zw m27 hj:ux+hw,oj cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mass vlkppp)q-7i4 t i)4ny stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.lvk) 4i4i7pypptn)q-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 th83 -ty/d2 y rd4t +ycqtewq9vde mass stretches the spring 2.0 cm downward. The mass is then pul qe3-vdy/ttd2 9+wd 4q8ryy tcled 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)csc-i;*f zq:9+ f z xi;uteoo mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distatcfu: e;);izzx9cfs *qo i-+ once 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 v r ms)o;xljw-y4 2mh6persus time equatis m6m-wo ryxl;42h p)jon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 po6,+lfazjc ki3 sition versus time equati+cl kj 3i6z,afon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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,2/hc vxswu/ekl t)td n:(p.lme equation:e/s /u(t: c2) d.tpvlk,nhwxl
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 endaog t; 7+3ylrqo)gcr* of a spring executes simple harmonic motion according toyqlg r3t*o +oc7; )agr 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 force constan9ip dn*p*go1j t 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 spring is stretched bg* p1dpij9 on*y 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 a sw7ycx;ni o+-re its frequency and period on 7ns-c;ox+i wy 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.d4q: .mzab82peyhw- (kuh mq 284 m long. What is its period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Earth.ht lce i5tm/ww t:4;-civ+ m/z 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 llu1dr88s5lk long. What is its period on the Earth8 rllk18l5du s?

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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 loq 2eb:i80l kt+keg g:ung. What is its period on the Moon whe82u :ggbetq0ek+i k: lre 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 spherical mass atta--e+z gyej lk5ched to a massless string. When the mass is displaced s --zly5 e+ejkglightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initial angular displacement of ,w.+yjr czex d u64ez; 4 zd+,crw;xezej.6u y 8.0e. It oscillates 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 at a given time. The fre97r iy1 o9gcaequency of the wave is 1a9y1 co 7reg9i20 Hz. 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 "snapg3al 9ar aik74shot" of a wave at a given time. The frequency of the wave is 120 Hz. What is the wavelenlaa ai3 94krg7gth?


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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 f46 x) ajrajj(yrequency of the wave is 120 Hz. What is the wave spexa4j( yj6r a)jed?


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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 ah/ lz n8o;ykmm 46/fnd 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 frequency of 157-wy057mhsi wqb zl2a 00 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 v4wo gn8d;-vxhas a frequency of 12 Hz and a wavelength of 3.0 md4o ; gwv-v8xn?

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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 waveleng t8 uxm3m bq25.zy0wryth of 3.0 m and a frequency of 12 0.qmybr 8umxywz 2t53 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 fk6. zrpvy.-r vh33pgk 2pwe;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 d70ys85adz x nfensity 0.0050 kg/m is under a tension of 1350 N. What is the wave spy5fsz n da8x70eed?

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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 tensio k+a1miv-1obg9yys .mn of 180 N. What is the velocity of prop+kv1oa miy9myb1-g .s agation of transverse waves along the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m is traveling down a 500 m long wire whose tot66bhn wu .x3x;y d:gvbal masshu6y3w d vb n;x:.bxg6 is
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagation of a transverse wave on a 2.0-m 9q9tlni tuj*.0rsn, klong string fixed at both ends is 200 m/s. Which one of the follo 0jnuti9tlqnr ,.s* k9wing 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 fundamental fccdkfa,3a 1qdw( f2o8requency of 500 Hz, which one of the following frequencies can set the string into resoc w2a13d od,8fkfa (qcnant 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 s hz-ud1 kr q1y2fchg+y,x(s *9jt ;lyf, fogl/tanding wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal seyl -gsd 1 y12z(yrjlux f +,9gt/ffh h*,c;kqogments?

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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 standi b5 /tr73 kn/ze-fp7g/syrwk cng tr-7/sw r p3c yzkgb/fk 5n7et/ransverse wave pattern containing 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 und.qb rzcaaoz3h3 qz w7l)3n 67(6tidjwer a tension of 20 N. What should its length be if its fundamental resonance frequency is 220 zq6) z i.tqwzwj b6 (hrl3ca3n3a77doHz?

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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 line/qjt :b jz0db6pv+be0 ar mass density 2.00 g/m and le0bb:b dt6+ ej0vj z/pqngth 0.600 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. Whs ff e.xt4l,0eb1auy :en the string vibrates at a frequency of 85 Hz, a standing wave with,y0 f e4fextu.b:l1s a 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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