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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 process ifs7 as1 m qx0gxn k-8)o7lf6iis 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 unit time is ciw0a fxtk w .k3,lv91valled 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 ty,l:zl6w 3xitu:z i0 qcprt7:he equilibrium point is called theiytwlp3r z:cz7 6:ixt,: ul0q

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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 the mass is at its maa ya4a ea gp)1c(1jls2ximum displacement from equilibrium, its il 21a4jga(caa s1y)pe nstantaneous 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.yvohcn5.ka 5* When the mass passes through the equilibrium posho5 n*vaky. c5ition, 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 underg6em .5)vfg27yrsi(toa- pw5 ad mh+wgrvg3j*oes SHM. When the mass is at maximum displacement from equilibrium, its instantaneous acce5w -tr*7 fdsv h)g5g+3rwvpgo6iaeay mm( j2.leration

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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 ve.mk,twr h1bosf.j ( k/rtical spring and bobs up and down between points A and B. Where is the mass lb,ojtk1.wfk /(s.hm rocated 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 pointujfg1i9uz((c96zt cn ds1ti0 s A and B. Where is the mass located when its kinetic energy is a tstuf9gccnj d019((i z6 z1iumaximum?

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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 point; f9og v:,wqwwtvq w(9 l:*iucs A and B. Where is the mass located wgq v,:;wfww( ui:vl9cqo9 tw* hen 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 verticn h 9y zg35)ztym b*3y1vl.rbkal spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a m nrl 3y)y*zk. g9hv15b3ytzbm aximum?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the ampp/j/b0,m:-l kq- zxp e8 hc5surz9 hqilitude of a vibrating mass-and-spring system produces what effect on the system's mechanical ez qhzp-qhx /:s be58m ,ck-jl/irup90nergy?

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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 vibhr .; vf*rdl4urating mass-and-spring system produces what effect on the system's mechanical enehfrvu;*ld4 r. rgy?

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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 syst1 q e.pyge3/*t ;gw )qoylm3wsem produces what effect3 pmos.y qew ;* gtweq/1y3l)g 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 o 7 rs,rwfjkg5i,,un3yn Earth and on the Moon. Where is the perk , gnf, urw73jiysr5,iod 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 l/7cfxp)ti, s constant k of a mass-and-spring system causes what kind of change in the resonant f tf cxl/)is,p7requency 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 a mass-and-spring sysexh8p, d )*08h2pzho) r fj2nzra3opvtem causes what kind of change in the resonant frequency of the system? (Assume no chang 3fe roorjz)ah ,npdp hh088* 2)vpx2ze 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-spr s)-aj)m e:0lffu)yww-a:a1+aln bgding system causes what kind of change in the resonantel y sf:+f-b))aa -1 lgdnw)aa :0wmju frequency 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 .t:1ii7t+slt+lz rqa string of length L. For this systezs r:ti.qait ++t 17llm, when undergoing small oscillations

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the mass of a simple pendulum is tripled, the timeii/b0fq ko) lzfy:); d required for one complete vibrati ;bzq:i y0kl)/i fdof)on

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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 A is t/v abht1 le,taz6ih2 4wice as heavy as pendulum B. What is the t/ abalv 12h,te4zhi6period 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 s.uv .8dzk;il3( 9sgye q.pjzoimple pendulum is tripled, the time for one complete vibraog38lqzus v.;9ykz j ..(pdietion 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 both its ltohy ,.3i rpr+ength and mass are increaho,3.tyr ri +psed?

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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 forth at twice the frx u(bu hix4 r (akafa; n;7:770djgfbrequency of simple pendulumah((;kgi4a 7;7xujr :nuadbf7bxf0 r B. 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 act5ct fw..g-wp celeration of gravity is less than on Earth, the resonant frequency of the .wf t 5-twp.cgpendulum 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 reprhnf30,hqs/,mbu n7jzs) zyo-esents


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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. 11-1mek7vmu o,/7e represents


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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 represen:1e k)rn n5wtbi)6cihfb * ng9ts


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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 amplittxmb xa1c57cr3v8 8ho3( agiv ude 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 fromk*a9,p;s;rmz: juzd u equilibrium is called thm zj r;9su dk:*u,za;pe 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 suc 6(qka *v67jds8a/y c2 gdcrdi 4syck9cessive 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 o7hh*khe uq3b 6p- 6vwa wave passing a point per unit time is called the wave's-o vqhh3e6bw6ph7k u*

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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 mul10ly::b :) 7goshtheaoy( 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 b r)0(gzrara*s etween successive crests if the gz)r0s*(a a rrspeed 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 wavelensmx;6uy810+tpr a jyx gth 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 sep;8 s+6ymxyja xt01r ucond 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 lengthus b:qv) mk8gkvl6 ,zb7d27jt L, mass M, and tension T. A standing wave is set up. Which of the followingg tb uv:qd7v, 2ml6b8ks) zk7j 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 ispq70xh,-lek r f5kma6 under tension T. The speed of a wave in the strink5qp0k hfmrl,a 76-e xg 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 len-kb2qv.i -49n u yibdlgth 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 length is increased to 2L, wii2q4nuvid9ybk l.--b th 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. Tl* lw xjp;:(dihe speed of a wave in the stw*j( xi;ldlp:ring is v. What will be the speed of a wave in the string if the tension is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a trakv *(t4xvt 5gbnsverse wave. As an S wave travels through the Earth, the relative motion between the S wave and the part54xbv (t*kgv ticles 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 travels throug pzwer+- .2ovvh the Earth, the relative motion between the P wave and the particles er .- wp2vo+vzis

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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 wav+qk n)w4vrii;1e a/ zljj8( pre 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 discefve/5mi u-gs* h;/riontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses;*vhe5u/ifg me r-s i/?

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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 amqgfr(juo0 00me l 3c-xplitudes pass each other on a string, one is traveling toward the right and the other toward the lqc oj0fleu3g(x m0r0-eft. 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 strix,9p :tvplsz0 lp ;4 fv2j1kgdng. The 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 timj9 s ll0p1f4xz:p v2dg;pv,k te

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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 stri(. n:i m5 nwzxui9t:ging 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 teniuc -ldf c-63w3xpo0o al d:82-xnq mlsion in a violin string, the fundamental frequency of that string will incre -2:fdi cl -n6u qolowxdx ap03c8m3-lase 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 f(rm r7 usgu)5a spring that stretches 2.00 cm when a mass of 0.600 kg is g (urfsr75)u msuspended 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 spring constant 60 N/m along a horizontal, , :(z6azbmo-xmu hv-2vo sdv- frictionless surface. The spri z(vh-m du,xb s-- oaz2vm6:vong 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 hgxsp41,lf+ qhu) o i-eorizontal, 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 bac1os+lg-4 qp), ihx feuk 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 constant 60 N/m alod8j6:vcow7j nq8 cnbht- 2(x7 t7qvnrng 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 the frequenvqnjjx :dnt( cnqh7rv- 87wtob72c68cy 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 go ks 6x wnpih)xp26mk/7es through 10 complete oscillations in 5.0 s. What is xx / 6pwis6pkkhn 7m)2the 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 ide)yh9 .qt lhz(sal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of th9qtsl ()hzy h.is 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 alonza)iye53xn,gq sf7htp 9*lr4g a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibtl3rqhxn*,ye p9f g47)i asz5rium 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 dhm0wcv /)-zi :dnh(n 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the syst()wc z hd-:inh0vn/ mdem 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 alosch a rz3alm)wr 8gk2ot:5a, 1ng 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 1sakg3za8 tmarc 2:)wro h,l5 the amplitude of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m alonglb:cx3in1 2mc a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.m :c3inlc2 xb15 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 horizontal spring of spring cons/sk p 3yra 64vs-)kvcetant 50 N/m and set into simple harmonic motion with an amplitucvasp) k/e3yr k4 -6svde 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 horizontal spring ouv /, 5e*ergf6r;c drkf spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mecha;5 f/redve,6u krgrc *nical 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 spzd+s xf+ bkmaig1-j4b,5m;gkring of spring constant 20.0 N/m with an amplitude of 0 k-xf b 4+dmmgikg1z;5abs j,+.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 its equilibri6 68ufhd0 qllg-vd0jbum position and released. A freq06v-dd u0gj6h8f qlbluency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 p2;kh7vp6w0:mdzhoz/ y5, o cpy awo0ocrp59N/m. The object is dispoz5pdzo r ochvmk0ac 2 y 690 ;5o:wh7pwpp/y,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 spr*g+-htbq,( . djktvh fing of spring constant 10 N/m. The object is displacedt-,bh k qtv(gdf +h.j* 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 htrd;3w/)3pqgy i6srof spring constant 18 N/m, displaced slightly from its equilibrium position, and reldy3r; iq/)g3hrw6tspeased. 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 frequ f,3jxx 6fi)w b90boshency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attainejxb f3if h,96xw)so0bd 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 attachfdb4 y;gukrn v+c t 1;g.d24qzed to different springs. Mass A vibrates with amplitude of 8.0 cm at tg;v db y+ ck2udqgf4n;.4zr1 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 suspe)qcpiu3,vw5w*k e9* k d 5g3z acj2gq/jfu- xonded on a spring. 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. Calcula*3o k juiw 5u f95dv,/2 c3xqzqge)agjk-*wcpte 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 ;f lxe3 pb fj2ml,nu.c2wz, f2b6xml1 a spring. In equilibrium the mass stretches the spring 2.w2 czbu2b6pfmlx l ,;1n2f ,fx.l m3ej0 cm downward. 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 strel2qu7h2dh -0eoi,m laz6c4 vqtches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write downez dml 4o,2hv6hal70 iucq- q2 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 th u0bs 0jh5bv)xe following position versus time equatiohj 0)b5u 0bxsvn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 har28gu 4 81d*k cbsd;b. oawo.ugnrqxc3monic motion obeys the following position versus time equatiow. g.u3a8q*12o4ks dogb8cr ud nbxc ;n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmoni6psf+b9 m(gr / 2hewfdc motion obeys the following position versus time equatio6g9f+se fm p/w db2hr(n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 :x8 renxo+3dryzr 7ygg ikh2(2e dk+dtg+o2( of a spring executes simple harmonic motion according to the eqde2eh kx(ky o rt:7z8++( ddio rg+n ry2gg2x3uation $y = 0.50 \; \sin (18\pi \times t)$ 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 ofblnp3zi-s55- s-fti nmy2,tz 20.0 N/m oscillates on a its5sznln2 - -mti-p 3,5zfybhorizontal, 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 8d+7gwk(f,8 b) di duji.0 s. (a) What are its frequency and periojw)dkdfdbiu8+ i,7 g (d on Earth?

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m long. 7nt wk)lr7:rgoql 4p g;-: lhbWhat 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. What is its p*pdi) 5yc1rcz4p :rrlength?

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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 lo7qyi mdv.32q*g ppw d. -heo0hng. What is its period on the Ea 3qd7hh.pewvpy-0o. mg*i2dq rth?

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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 7r;aah+ dn +puclock is 1.0 m long. What is its period on the Moon where the accelera+7p +nr; uhadation 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 maeq l9s;rzu5 /4pg6v jsss 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 5sqv/z6p e 4;j9grusl 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 a8bs e08kh q5doq8kvhnjod4)2 20-g mass has initial angular displacement of 8.0e. It oscillates with a period of 3.00 s0kqh8dv 5 dsq8je ookn2 )h8b4.
(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 freq uxpd imo8g*95 ziup0v6 .7oicuency of the wave is 120 Hz. What i.ip0xmd8v u7i z g6pc5o9*iuo s 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 fom:k pg3*vlm4requency of the wave is 120 Hz. Whatl4m*k:pm 3 ogv 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" o37qbls8,:jcz;p g/5xve,( eanv e vwhf a wave at a given time. The frequency of the wave is 120 Hee ;jael: q38pnvx(g,7zs vhv, wb/c5z. 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 of a wave whs(aff pp8 +oo1ich 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 withh o+po+9.oay 0 (jawap 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 a)57 oqto7;0 euu ,mkstile:ifrequency of 12 Hz and a wavelength of 3.0 77 k;so5),lm0eia tiut eqou: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 m and a frequency o y cp8 rzhejb+ka1)ax7 v22pe6f 12 Hp y1e7bje 6 pk2raz2c8xhva)+z?

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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 7nluguf:y74hzv 49 iw 2.5 m wave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass densb h0gjr8ffmzd67 zk,q62m cy-ity 0.0050 kg/m is under a tension of 1350 N. Whakyqfrz,m68m 6 dbch-f0 2g7 zjt 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/t ony3x)a9: flm is under a tension of 180 N. What is the velocity of propagation of transverse waves along th)9 oy3lxn a:fte 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 a43oefkwu;d56zdqhhux u*4d+ 500 m long wire whose total m54u3zo de6u*xh w qhkf;d4u+dass 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 long string fixetic(vjb pjnp 7l(r0 z:)o +g/h hmb)s6d at both ends is 200 m/s. Which one of zpg/0j):bht ( bv7+(ichp)s mo n rj6lthe following is not a resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a fundamental frequency of 500 Hz, which one of the follo/s (j d62umxxqg-1c k9ijp sp33-1pps/ xkscqm6ui9 dx 2jgj( wing 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 segments in a /z ntxjoe-83*dyeb:wstanding wave driven at a frequency of 480 : xjw/doeny*te8z3 -b 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 b.u-cee,ttg5l .d-pnsoth ends, vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is need-lu5 ce.ed,t n g.ps-ted 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 under a tension of 20 N. What shoul37szr- j4la+5liv gx qd its length be if itszl gsix3v jaqlr45+ 7- fundamental resonance frequency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string of linear mass den )e2mcl,yj7p:w (7z:j nizlp ario7r *sity 2.00 g/m and length 0.600 m when it is subjected tjic*nl( e)m77wayizr :zr,l7: po2jpo 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 st2izld5g,va3 vring vibrates at a frequency of 85 Hz, a standing wave with five loops ivzga5 l3idv2,s 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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