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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 perioeo-nmfpoh79 92*oflyocv1 gw46f) v +kqqyb9dic 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 numbw ja,g a:e028p5hlygs+ bfi2a er of 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 the eo7-dd ay+b tka.zdgw8c77+ iequilibrium point is called the+ wkdaedt+g7o78a cyi7. dbz-

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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 maximum displace20/w ,b rzyzkwment from equilibrium, its inst/w kw2 yzb,0zrantaneous 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 *x52, bhlzlxlthrough the equilibrium position, its instantaxlb z*xlh 5,2lneous 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 from wxskb7+ .nx-n equilibrium, its ix +s xk-b7nn.wnstantaneous 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 aglal 6uh o1e*;nd bobs up and down between points A and B. Where is the mass located;el*a 6h guo1l 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 tboq6px*y4lj +kv :th-o a vertical spring and bobs up and down between points A and B. Where is the mass loca-b lt6pkvjhyq4 :x* +oted when its kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical sprinik4 dk ,o(ce; bfwtf+d5m*8drg and bobs up and down between points A and B. Where is the mass located when its potential energy is kwdoc+mfef* 4 rb5tdd ,8i(;k 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 f,kgfqwmr 4/ 3ft;zb,buz5t,a vertical spring and bobs up and down between points A and B ztfz g,/fm345qbfrw,k;tb, u. 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 dgelsgeko.. +r 9+e8fa vibrating mass-and-spring system produces what effect on f.d e r le+98ke.ogsg+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 vibratinyaci+/ojk9 v08k(rp7p bo(t cg mass-and-spring system produces what effect 9ckcti+jry po/p7bk 0vo( a8( on the 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-spring systemci e9drx37 )kh produces what effect on the system's mechanix)c 7reidk3h 9cal 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 Earthb/*tixqb 1 8 m3puj)ic and on the Moon. Where is the period the greji 3q1)i8mbxt/pu* cbatest?

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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 system causes what kind ofcdf6sb+fnl; kg ps+tu .xf961 change in the resonant frequency of the system? (Assume no change in the t;d.+ 6ks 6+x9fc1b lusfngpf 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 mas jzb:ffavk3(a3:2 cr e t9vc1md pqh7x9owc0-s-and-spring system causes what kind of change in the resonant fr(a03f 9da2b wjvq1f3hxo9pcevc7r k:m c -tz:equency of the system? (Assume no 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 u0o;y90s8 smg+yby2o roi/ dvmass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no 0+yg2;soudy0yo r 9obs/m i8vother 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 att nom5v()(yv9bf mqsg zy1l29veh1l a )ached to a weightless string of length L. For thi o 11lyvz92yf(vm )es nq59 blamh)g(vs system, 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 ej6tlxy1-kb ,5snd c)7ao4 lgtripled, the time required for one complete vibrlxk-7db t a ,4g)j6ncyso5l1eation

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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 zs-);)ejdcbkng9d,z pg2*u n of A is T. Pendulum A is twice as heavy as pendulum B. What is the p;zzu9gcp-,gkbd* sjn))dn 2 e eriod 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 trip -epq l ti)x6x7(*lvxeled, the time for one complete vibration -6vl()t* xqx7peie xl 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 length and ;rc9, t9 szbramass are increaseb9 sr rz9a;ct,d?

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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 a93sr a(d;yhd.ozpe-zt twice the frequency of simple pendulum B.( azsp;.d o9zy 3d-reh 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 tusz45qezm;d7dx9ow- 5c (w, cjnqo:1 pn8yq nhe Moon, where the acceleration of gravity is less than on Earth, thecc9: -1x m z7qnpq4 dz8;ywq(n 5jswduo5n,eo 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 rep7y7ih:k41u2-pl 2f sktcf5 tzz j xg4rresents


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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 repe/0e;bie zdr3ix( wa b;k14sg resents


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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 repret p(rq,.pqg t.sents


本题所包含的其它图片:

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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, thenr7:x a7(-q)+6 et vajiu 8opd*unevc amplitude of vibration is found to depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of points oa4usk)uccb:w+ t05)a * ry(auo) ya1 kqytc 2of the wave from equilibrium is call1)yrst )uu+ aowt a5a4yc0 y c*(k bcuao2)k:qed 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 successi vdgz8mvj1 -q4ve 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 pa.+fn olgsnv 35ssing a point per unit time is called the wave'no3s.n 5v+g lfs

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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 waveou67,0r*v(b xejf :j 9mb nd;ystb;fclength 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 inli,ypyxgao m +ld (7ey.oq+73creases. What happens to the distance between successive crests if the speed remains constan7yog del73lo(iy x ,p++.mqyat?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a string with wavelength l a7wykndbmzht2)gi. / 7nd frequency f. A second wave on the same string has.i d y)tg2wb7mhn7zk / 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 lla5h ,- +orwb v6/um)mhiqr,r ength L, mass M, and tension T. A standing wave is set up. Wh+aomu 5hwb6)/mr ,ir vq-, hlrich of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wave in t nc7 sevjm;ber9u:g2- he string is v. What will be the speed of a wave in the string if the mass of the string is ie;jn-b7reg92us vc m :ncreased 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 wavmpacx(k;/ pyk)1y 0 oue in the string is v. What will be the speed of a wap 0 yoyux(kk1pc) a;/mve 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 anhbajqa: 94ggz zef8xc r;:+ j9d length L is under tension T. The speed of a wave in the string is v. What will a8zq bh;+c e9 :gzx:jf9gjra 4be 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 transverse wave. Asw8z i vulx1s:dg2gxj1 y9-ki. an S wave travels through the Earth, the relative mzdjs :x.9gw1-kxigly 128viuotion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudinal wave. As a P wave travels thf175nv41 lo bs ndy2umrough the Earth, the relative motion between the P wave and the pa1n2 45nvmosydu1 l 7bfrticles 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 wao r;pcne5.elhg)wrn /1, b663bj ym18 ofar hfve 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 discontinuity wh/ bs3bb.o, s05 rrexkrere the rope becomes thicker and heavier. What is the orientation of the reflected anbb.rr / ox0 5esb,rs3kd 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 evxe+g.k. 739 vio77wizm vmmlsb) tt1qual positive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupyz t e7i3bw.+mgk7miv lxv19ot. )7m vs 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. T8 vw+g5oz:s b4 gqyl:ihe 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 poi:ozi 5l:y vg+bs4gq8w nt 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 f1 1- i/z ixc.yxx ,arldb+dxj+ixed 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 fu 6ufpmjy 0tt3k.2cy7vndamental frequency of that vf6. u03pyjt 2tc7ykmstring 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 constant of a spring that stretches 2.00 cm when a mass okaic-6aq 3s7 cu*h, x(lsyemji b/ 9:tf 0.600 kg is suspended f7m ,ske -ujq9a*h syti(xl i:c/bca 36rom 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 horizonta4f onrx ouj/j85ls2e7l, 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 equilibruof 527oj4 rs8 lnxe/jium 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 spri)c; /u3apjz-(ted de eng of spring constant 60 N/m along a horizontal, frictionless surfj;u /a-tdp( eed)3z ecace. 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 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 8ex7uz4 vk0dnbt-z 9sspring 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 gz exb0u-d49ztsk7vn 8o. 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 z3y us+hn8 t9fthrough 10 complete oscillations in 5.0 s. What is the pers3y8u tnzf9 +hiod?

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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 sprin402+cfnpr02me jk lk jg constant 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 positio 0fm02pk4lkcj +rej 2nn?

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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 constakw.ql( ld3- q.0x qkvknt 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 x.( .3qv-l0kkq q ldwkof 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. gl /u.qgl vj2.:u62mvgw vy;tThe energy is 8.0 J at this time. The mass is cuq.m g:lvg.t /ul uv2j26 v;ygwt in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached tnoucdp7 9 m*a; bpgp hzf(7.j 6.v.diqo a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmod.;d 6*ibqg7 9 o papfp.n.z(cu 7jmhvnic 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 constant 20 N/m along a h-178hy8/fx1vo wqyo jd cq/udorizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential energy the same?o 87cy fovu q1jd/dh/-81wx yq

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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 constafb9hb(4nj c( xu5k6 /a:uj jbdnt 50 N/m and b:j xfd/cuuahb456 knb(9j(jset into 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 horizontal spr vtf 867yam8sz5 a:k lpr0ang.ing 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 thit7pvk808za 5m.6galay s:r nfs system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring ofths i )bhn8dhc +,la-2 spring constant 20.0 N/m with an aina8d b)2hh,+lc h-t smplitude 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-.)h tyahnl.0kpz4f 2yk m5,y ispring system is displaced 10 cm from its equilibrium positi k n.mtah k,05yy) y2zhf.il4pon and released. A frequency 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 as8omd9y a8e 7yd64 hsl spring of spring constant 10 N/m. The object is displaced byody 69lh7d8am s4y8 es
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 e6db bnw**;0wt /yxvdnm.sm:a spring of spring constant 10 N/m. The object is di bn0dm;n/wbt.* *eymvsxwd6: splaced 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 springr xrzhx 8n k/(pb9mlxg8q+v0 , of spring constant 18 N/m, displaced slightly from its equilibrium position, and released. lpv+mhq 8bzrx9r x8,k/ g0(nx 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 s zrs-;i;2 an;mgsg v0 udv0j3t;mg* tupring. It oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibriumtj*0;n3vds;tz; g-au0 m2 mgsvg u;ri 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 t +q.b1um*cc:ao v ya* ba0j;fho different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz h0uocab. :q*+b1 j ;f vaym*caand 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 equily wnn* pbdrhjt;h,( w.u(7/sxi /.qhcibrium the mass stretches the spring 2.0 cm downward. Th wudbs. i(xq,p;c*h r 7nnh/(tjy/ h.we mass 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 equilibriqr4tss1v+n yxq jkmdu()/hgww 7t -+(um the mass stretches the spring 2.0 cm downward. The mass w)/rjsshq+(-4+dguv 7ktxy 1m w tqn( 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 stretches thesr,0 pwz k(3 vztra.2t spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from r k,23 z 0rvwzra.(tstpest. 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 positil9rgm8 m n,1hlon versus time equation:mllh,ng8rm9 1
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obeyjhm7jk 6 a/7qgs the following position versus time equatio/kg7 qj6ajm 7hn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 versu.tf pa)nps7 7vu:fv 1ha4yh.js time equatiop h7s1vtfypva..a4 7)j f hun: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 of a spring executes simple harmonic mvpwgr+ gck6m2 6 -x3gmotion accordinr gv+ggxc kp6-2mw3m6 g 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 to spring with a force+sd l+oy+/ilg constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That i++gl+/ds iyol s, 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 frequency an yo2 9)yvx:wb(vl pko x6k/w,ed period on 26vk)e: /l ypyo9o ,kvwwxbx(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 lonb58ivrew e16w g. 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 2.0bym+z47f z/wdkrxf/ b*e)-c y s 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 long. What is its period o4mkr ad it9- d9,gx(icn the Eart m9(t,gidracx4k d- i9h?

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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 ral; 4-*xv/;)ggvbundeeix 1is 1.0 m long. What is its period on the Mog*x4rd;1evgl )ni u a;/ev-bx on where 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-kt 8(xm7 s)wcltg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium 8tw(c7sl t mx)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 angul+etx.pt)23)isfgd-xw ,dx4sd xel g 1ar displacement of 8.0e. It oscifx.pgsed 3sg ldwt)-)ix1 2te+x4xd,llates 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 "snn x/t2nna6*q qwu 7n3vapshot" of a wave at a given time. The frequency of the wave is 120 Hz. What is tna3nnn 6wx 2u/qvq7* 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 t06h:9 iu0yuryhdl7 t)c u:brthe wave is 120 ) yh0ld7ybrthu9 t0cu6: :uir 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" of a wave at a given time. The frequency of the wn ;.n8w ieq+vj wpw.dly, 36jwave is 120 Hz. What is the wav.; jdj ,38nwiep qwnvy+6 wwl.e 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 a periodc2w 0qebw)y s3 xj3oz8a-ol0hyk5tmzg*t o0 + 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 150(bbh:3 ye3 r 8a.gh5wgfwuf .a0 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 frequency of 12 Hz and a wavelength1l1 m u0zhgzf4 of 3.hfml0 4g1uzz1 0 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 dz7ldgf,v,o:5 r( cy j3.0 m and a frequency of 12 H,r7 y5lvzd:ojf(g cd, 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 2.5 m wavb8pzs:)dw/)ad7 woc z 2pm0vw e 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 density 0.0050 kg/m is under a te,ne3(kobxph8g7c.u yo 5e ;ylnsion of 1350 N. What is tbh; c, uo x yeo378e.lp(5nykghe 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. Wjgjtpz tc,b.nf-61v r- wg0z +hat is the veloctgtz bj1j-rz+wc-6.gpf 0nv, ity of propagation 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 travelinn-r4. rzm4 o in8lpkn2c/9lme g down a 500 m long wire whose total mass inm 8o4em/4c2 r.nl lnz-rpik9s
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 tran.kq w; fi l43b;qpt fmyh*.0yvsverse wave on a 2.0-m long string fixed at both ends ywp;ifq 03; .tvkm.bfhql4y * 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 a fundamental frequency of 500 Hz, whichop m g 8t/9hpb/2*ksiu/ad:zr one of the following frequencies cp dapi mrgou://hb k89t2 s/*zan 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 4-qj 4byj5efv5eg5 ztequal segments in a standing wave driven at a frequency of 480 Hz. What driving fr -4g45jjetzf 5 5qbeyvequency 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, vibrat sxkd/m hww7dw ,t2npg8-h))ses at a frequency of 12 Hz with a standing transverse wave pattxw ph2)/ shkd-snw w,7mg d)t8ern 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/otgs9g7 (r -tlm is under a tension of 20 N. What should its lengt-7ggrst9 (lo th be if its 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 deh7;s/yef2 i+ qh 1e nrzoy:c7(jdcfe.nsity 2.00 g/m and length 0.600 m when it is subjected to tension of 50rcc ;2edq7 +zefj/e :s.7fyhhyo 1i( n.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 ylbjdhd*: e 6 h t).8im.ew7roends. When the string vibrates at a fr6 *hye)h. i:7t l.8jedd rwmboequency 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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