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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: 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 called the;j ::+be, 9d;opxh7sjwqyfu l

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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 wj9.uysd j v,-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 the equilibrium point 3oc5u/ ohhio4 is calluh iho o3o/c54ed 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 undergo 4.msirkw17 vll/bc7nxh3/ mj es SHM. When the mass is at its maximum displacement from equilibrium, its instlm cwr/b.3si7v/lk x m7h1n4 jantaneous 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 slcka1.8pg 5 omu z20c+ qr ;tu4ydt+zthe mass passes through the equilibrium position, its instantaneous; 2ykr+ g5 tu+0c 4tscdmzpq8.lau1zo 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 displas:mg .sa;iesum+b7b - cement from eq+7m:- bebu;ms a ss.giuilibrium, 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 poi a11pa-l7fnq,q pso9 dnts A and B. Where is thef 1na-d7q,pp19 lsoq a mass located when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down between pmsd:qk3 zi +,mc( pp,foints A and B. Where is the mass located when its kinetic energy is a ma+kfqism, (d,:c m 3zppximum?

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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 psxkw /1l7rf7q oints A and B. Where is the mass qrx7f7/1ws lk located when its potential energy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached tonfwc425 ewnz0 a vertical spring and bobs up and down between points A and B. Where is the mass located when its potential energy 4nn ewz0w f52cis 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 vibrat k19;am b- ci+osg+cqjing mass-and-spring system produces what effect on the system's mec1cmi a++q-kbc9 jos g;hanical 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 pgwh80p ci/ .ooroduces what effect on the system's mechanical eno/p giowch80. ergy?

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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 v ,z(w7v3 d2xpv*d rockibrating mass-and-spring system produces what effect on the system's mechanicxv7,p(zdc dorv2kw3*al 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 thrhnm (0xzmrpk+/hni1c-r2a5.m no/xh 7f)l ee Moon. Where is the period the x1ha()k /rr0p- +7nmx5m c 2nlei frn.ozmh/hgreatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the springo:0-yiw*qeg v -d aa/l constant k of a mass-and-spring system causes what kind of change in te0vayo:gi/* ql-a- dwhe resonant frequency of the system? (Assume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a8r5acp 0) pr,l+amef )zss(il mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's spring constant sl8)(al5p ) zi +a ,rre0scfpmk.)

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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 kinz nkmck+87i d hv 9,osal-noba -2u2;zd of change in the resonant frequency of the system? (Assume no othcn228o ku+k d zs himz,o-;v9baa-l7n er 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 oo872;y ;yfg eks bhnq2h6pxw(f a mass M attached to a weightless string of length L. For this oqkgyf h;h 8n72e(2wy6 x;spbsystem, 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 .z4b 5nq/ :s2ql)tylq-z kjztis tripled, the time required for one complete.zq nql)52-j ylb:z4sq/z t tk vibration

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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,bl5uewks vc,a8 q71l T. Pendulum A is twice as heavy as pendulum B. What is the period o uqv57bw,ae l,l8 1cksf 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 trip.)l ;rd8spijnmu1b+ u0na(i yv2w-qb led, the time for one complete vibration ibn; -)0i.b8+iy un2wum1 spqd(lva rj ncreases 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 ia i2t6/c)l/ 4cej4 5g kahynwpl )au8mf both its length and mass are incr 8wug/5)4p4l 6hja l ncc)i/ke2aymta eased?

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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 forgp5,c29+czy5tv-l-npx/dg4 bn hpbj th at twice the frequency of simple pendulum B. Which statement is cxn tpl2c5/ y + ppz-hvg9 ,cb5-nbdg4jorrect?

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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, wz0,o- mtvt+:uf3xbm p here the acceleration of gravity is less than on Eaz+0-o 3tb u fvmp:tm,xrth, 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 represen n1s() ;2otvbuyitpv swdm;:+ts


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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 repr95vqj-jobz.y -h ee2 +fk3klp esents


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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 repremlbre3s,klo 3 7dv: 9esents


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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,y8/nuofwgld90sf/r e01 b 2 dg 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 dispp 77ljddmr4z3, eqm u9lacement of points of the wave from equilibrium is cal93zplmmu 74e7 rd jqd,led 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 b/f1jey dzj-nl49 r x6crests 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 c9qnktp,qjy2:jtm ) o3f3qz9oalled the wave'q )ftj9 9yk3tzp:qj2on3,o qms

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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 frequ3*jn1ry 33fkk-cdwv z ency 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 dis +3-yi,edwz9p(gq ;)o6t a ssgiq/xu stance between successive +s,ius xz9pe)a-6tow 3g g /;yq qids(crests if 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 wmnowg2 ++:d qkavelength l and frequency f. A second wave on the same string hwqmdgo +kn 2+:as wavelength 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 7ap6 yri1 b2wvlength L, mass M, and tension T. A standing wave is set up. Which of the following is tr61w ary2b ipv7ue?

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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 loio)4g xa/crq,6l d s5ength 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 incra6s/5 oro)dgxqlc4,i eased 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 *;.n aq;f 3isinp aq;wwave in the string is v. Wha; .;q fq3pw*iai; annst will be the speed 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 T9tq22u v1o tgz hz3rv*. The speed of a wave in the string is v. What will be the speed of a wave in the string if the tensioztgo*u31rqv t2vz2 h9n 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 wm-j2q7 jsmzrx s*u82 qave travels through the Earth, the relative motion between the S wave and -sjmj2r 8qus7*qx2 mz 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 l o1g8hxthc6 kfmi3 e2th;xt5;ongitudinal wave. As a P wave travels through the Earth, the relative motion between the P wave and the particl5t;m6 2f1khthh oc t;egixx3 8es 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 iu*kjjh:bbow1a1z *; js

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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 rwo lo: (b+uxkr o,o5g6ight along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmi6g: boo,xol5+o uk (rwtted 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 a 6(xrpq3cldc4u6( s stzi 8/fpmplitudes pass each other on a string, one is traveling toward th s3l 4u/( zpxpi8r6(tqf6 cscde 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 p6n3.i x8lw acr*,sqm each other on a string. The one traveling toward the right. nw* scxi36qalm ,8rp 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 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 ajlir.wye )8 l2ly:cx bz23a8x 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 fuj;;i v ( t5-c: ,oym2cwrfrguwndamental frequency of that string will increase by a ,t ;i cw;2 cj5-ryr mgu(fvow: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 th ek(t( cscj;a6ppwdj0q/ u z d8/r.lc*at stretches 2.00 cm when a mass of 0.dp(*jaj/( .p0/ur;twceck d 6clsz8q 600 kg is suspended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of n77xphov+*lip- 7 apt spring constant 60 N/m along a horizontal, frictionless surface. The sprinxtoi ph 77pp ln+*a7-vg 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 constant 60 N/m along a hori,a5qeqd t*en/z m2kj:zontal, 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 2 mzeqak:/e,5q*tjn dwhen 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 spr.qr8pqf hu uxm;70l1ying 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 equilib. p18f0x;umuh q 7rlyqrium 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 osfrj/nqy8 t mc 89:6pslcillations in 5.0 ss:ynr69/ cljtp f m88q. 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 free end gk1z ;(c.s2il- qo f3rbqna4cof an ideal spring of spring constanc 3i4kq;r b zcn- 1l(.asg2foqt 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 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 hor p5nv7d;es,wk6 o x(kcizontal, frictionless surface. The object oo6d(px; kcsw e75nv,kscillates in simple harmonic motion 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 ckni:7p:o;yzpqpzs tw5n- i )/+ kqc5 vm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the enz/ 7pi5 );nq+ qcpnoiyw-pv:kt :5zskergy 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 attacpzcc c4mp:b ))hed to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at p4 cbp)zcmc:)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 q+uxo)s nz +usvv67jza ng-;2 spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and hasxa7 v)usg+6zo zj+v;q su-nn 2 a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to teyx w1k.1u0)v0lx o2hhyn*sfhd 7xu 2he end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with asu 0v*l xd21 k 7yn)hfh0.xuyxe2ow1hn 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 onz4jb+ rf 7t yjptpjt(s9 d9gg0 r,mi5ck;n (.f a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude r9d;yrit . 0mn(5,f9psgkcgjbnt7p z j(tj4+ 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 ideayf8p ++u* /x geicnhe(l spring of spring constant 20.0 N/m with an amplitudf8h*yg(ce+i xn+p/eue of 0.250 m. What is the maximum kinetic energy of this vibrating mass?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of a mass-and-spring system is displaced 10 cm frko,l 2*y8chjxom its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be obseh82kj ,xly*ocrved 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 li-gzw l6:mf 1amy 8:qN/m. The object is d w6qi-8my :lgamz :f1lisplaced 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 N24/*f (wsj emgrgebr6/m. The object is displfrwg s/eb6ej( 2gr*4 maced 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 p2- -y5hq sewfof spring constant 18 N/m, displaced slightly from its equilibrium position, and released. What is the frequenc2 s5-qf-pwy hey 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 when gad:sl;-fffun/st2s -t 4s 2, vj/qs gdisplaced a dis/ f ts-lvd24gnf u;fa:/ s-s2qj, tgsstance 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 diffea t1j v14k6pusrent springs. Mass A vibrates with amplitude of 8tsa 1kjuv 6p41.0 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 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. ,jdp)8h2ep (bim: ztbIn equilibrium 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 rpp(i2:8,b ezdtjmb)hest. 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 strerb wxp(7hk0.hayn 4 a9tches the spring 2.0 cm downward. The mass is then pulled an ap 4ky7bxan (w0 h9.hradditional 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 btszb0pdoe1 +q q/e 18spring. In equilibrium 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. Write down its equatioot+b zse b1eq 8/1pq0dn 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 foll ybez 6fm3e+c3+5 esfeowing position versus time equation6 +f+fmys z35cbe eee3:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ty:bfg l,q* 7xtg2rqj6nr5n05;yrtv vhe following position versus time equation:xb ;vt*5:lrryftj0vqy 2rgn, 7 gn5q6
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 positionzk z41,itj r5 kis. dr74hljx; versus time equatio srjzhi5k zk 4x1id.,7;jt rl4n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 exlnqfoj/3d t 1hw -,1jl z.mp)osz:t,pecutes simple harmonic motion accotfjw lo /pnjzhd)sz,ml op. 1,: 1qt-3rding to 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 tol bwtez+9j.* s7w 7sep spring with a force constant of 20.0 N/m oscillates on a horizse . splb7t zwe79wj*+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 in 8.0 s. (a) What are its frequ 6qxxi*wp: x *2y:vg-mu.x7ajb kdx)tency and period on Eax 2avt*j: x dwigx)*pqyb. 7x6-xkm:urth?

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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. ahgg*01q-vbv 6b6zm,3g mwyl .6olbg 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 uuun6p80l ycvm041 cds on Earth. 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 lonru v ( )v/y(u.4lw y;l1zktzvtg. What is its period on the Earthzrkl ytuv(/4v yz)1(.ul;tvw ?

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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 grandfx.zixlr4b) 1 cather clock is 1.0 m long. What is its period on the Moon where the acceleration due to gravity is oix4zc bx1 r)l.nly $1.7 \; m/s^2$?

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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 a)iai6(w.hvfv)xcpcq hjx)v:k3 i ; , dttached to a massless strinkvvcpx)qahd)h ,6cv:; 3xji(iw)fi .g. 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 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 anu4k7fa5n oq,( kfrh4kpij e1dxih* :: gular displacement of 8.0e. It oscillu,q eif5kk * jfohxad(4i147:knphr: ates 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 frequencakzt;ae 0aa 0-y of the wave is 120 Hz. 0az e-;akt0a aWhat 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 tiec c*o36 ,tdbbme. The frequency of the wave is 120 Hz. What is thc6b t c*3dboe,e wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a givez :lw0grl6 k8b b)tk(jkuj4+ en time. The frequency of the wave is 120 Hz. Wlk t)lu6k0(r wjbzk:g4 bej+8hat 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 of a wave which has qo m9vf 8lu2l/l5r2aza 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 *7;u rm8g jsu,xdtj4 d1500 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 d3* w7d)wlems has a frequency of 12 Hz and a wavelength of 3.0 m?l)w d m3ewsd7*

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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-9l ga2 pth7oath of 3.0 m and a frequency of tl7a-gh29p ao12 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 ojtpf29)r-an2cl 87du0c ujh vva15 rm/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 a8qnlgfzp2p0 g;) r8 ex tension of 1350 N. What is the wanpfp 0r82xlqe)gzg ;8ve 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 o/ty- 8lh()bymcqqj 4z f 180 N. What is the velocity of prjc tyb ql) 8y/m4h(-qzopagation 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 q rp-6gf ,4oo4kuyoi8 m is traveling down a 500 m long wire whose totaprogfyo8k-i6o 4 u, q4l mass is
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagati. u(n.43ym*aqnba bas on of a transverse wave on a 2.0-m long string fixed at bon. .*b 3as(aa4nmuq ybth ends is 200 m/s. Which one of the following is not a resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has bagr0n4:a z fqwget v 47(g:)pa fundamental frequency of 500 Hz, which one of the followi0gner a:4:)q(b gf pz4tv 7agwng frequencies can set the string into 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.8c9ny;s 0 sbw0zaanm i2qk2 b segments in a standing wave driven at a frequenc9z2qb.0bns8 ; ak0 2wiycnm asy of 480 Hz. What driving frequency will set up a standing wave with five equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrates at a fre0 dwoh52/smp f)hb** tr 3qnubquency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pathm spt5b2owq/3d0* )brh nu *ftern 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 should 8o kickj5s7 i0*4zkxyits length be if its fundamental resonance frequency 5co i8kzk7j* kx4ys0iis 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 dengvka :+ ))fomdrs7 d.zsity 2.00 g/m and length 0.600 m when it is subjed) gmars+f zd:o.)k7v cted 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. When the string vibrates at u gyl3le,,j*q a frjg,yl 3u,*lqeequency 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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