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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 og4*e )ue l1qm2*bwt;aim1izof a periodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number of cycles per unit time is cal ietbm1p7+ka.nr 5os +led 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 equilibr9pd ctay p3r,2 r4l+gepd 8f(wium point is called te2f3(wp98t4r prcl, gydad+ phe

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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. Wh 6x4n nwl3tq5a;6wh zoen the mass is at its maximum displacement from equilibrium, its instantaneous veo3q 4 ;nn6lzat6 5whxwlocity

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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 uzq 1s l0oj16s cf 9bftsb4h98zndergoes SHM. When the mass passes through the equilibrium positi4b6s zlc 11hbs89jstoq9z0 ffon, 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 une1 rdf)z-z0 lpdergoes SHM. When the mass is at maximum displacement from equilibrium, its instantane -pr0dzlf)ez1ous 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 dk0 baa0lc(ik6own between points A and B. Where is the mass located when its kinetic energy is a0ilkb0a 6kac( 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 spxog c;i6da 2,qring and bobs up and down between points A and B. Where is the mass located when its kinetic enedagxo2q;6 c ,irgy 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 sgq-dw u )0exwnel *5v(v9p8pipring and bobs up and down between points A and B. Where is the mass loca) ww0 dn-9p8*ue(egpi q5lxvv ted when its potential energy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up /dx yqb)q;yz qy 5s49eand down between points A and B. Whe;)x qy/ q5dzybyqs9 4ere 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 vibrating mass-and-spring j k j52y nddmaf;kp(zs9-.(dasystem produces what effynd(jd-ma(;apj d5 kz2 s. k9fect 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-an da ,tl +kb,2rol9x4rm*r dad/z5pb;ld-spring system produces what effect onmpldrr5l+/bd, , d4o92k ar*l tx abz; 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 sprin czy slo6jrrx+kmc+tg 5. +v9+g constant of a vibrating mass-and-spring system produces what effect on the system's mechanical energ5c+g+s9+c +vjm 6rzrxl.ky toy?

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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, boto95w ri:sczo 3f hlqk dg09wj:k6ue*-h on Earth and on the Moon. Where is the period the greates9fwk :h 6-iko3e9jr c*zoql0g5swd:u t?

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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-d x4p.9zquax*and-spring system causes what kind of change inqu z4x*px9d.a the 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 a mass-and-spring system causes wf8myy ja4g p* *4wavsi: 0,bfmhat kind of change in the resonant frequency of the system? (Assume no change in the syst :b j4*y waaf*yp4ism,fv0 g8mem's spring constant k.)

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude of a mass-and-spring system causes what kinbg,xv17r d+ led of change in thebgr e+xd 7v,1l resonant 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 attacdas;b9 wg(cw +;- ark) ;lvpqdhed to a weightless string of length L. For this system, wrlvc wab;+wskd p9 g adq);(-;hen 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, uqd ouq(n ::ho,fv1fp(.( lwgthe time required for one complete vibra:.uuqq,1wdv(p: (lo n g fo(fhtion

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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 peovx* (.hbh v3j8qgfn7 riod of A is T. Pendulum A is twice vhgq8 x h(.7ob3vn f*jas heavy as pendulum B. What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pendulum is trimw9bp*ivr 12sc fm :(npled, the time for one complete vibration increases by a fa (mfi vw1pmrb9c:s*n 2ctor 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 kz8 px n,f3+prand mass are incrn,+x z8k3rp fpeased?

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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 an.o( *psb/qic)zws q,h d forth at twice the frequency of simple pendulum B. Which s * ibscp.s( w/o,)zqqhtatement 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 rb-x/w vez8s p3b6;xwthe Moon, where the acceleration of gravity is leww zrp8bxbe3 sxv-6;/ss than on Earth, the resonant frequency of the pendulum will

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 r6vvz7wd 2dk* xn:q 0qzepresents


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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 represen)-nh5o znnpkv3 zbbvxzn2y1. 4i2 a/hts


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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 represents5mwh7 rd/+gxp


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibrationii838m da6eme+ v1 qpj, 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 displacement of points of the wave from equilibriu 3juh:drfxtv ;b m2*9zq;fs;um is called ;:t*;vzdux f3hrjf b;qm9su 2the 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 wave rd2 f7x2cftk/'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 called the wu ib:57a;frnvave'iabrf; v5u 7n:s

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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 8;u.qeh a1 uyvis 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 ha3cf :um sui3,mpajjx8s7d8r : ppens to the distance between successive crests if the speed remainrdi8,3am8pu3 :sx usmj f7j c:s 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 strinclp8v ck39r rm)9 ra:yq7tm432 i(3eqb iw pdvg with wavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is m7qi8a(3mqpwy9v3v el 3r)bci kc4rpr: t2d9 the frequency of the second wave?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a string of length L, mass M, and tension0 -qiba wqb)2m T. A standing wave is set up. Which of)20 bbqa- iwmq 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 ths tjrji4eo ne cr-x4r2hf*.76-tz5mx e string is v. What will be the speed of s4e-4mhj.o jr *5t z6ntfcx 7r2xri -ea wave in the string if the mass of the string is increased to 2m, with no change in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. s (;snk(p kb4lp:fav35l z1.hbtbvb7 The speed of a wave in the string is v. What will be the speed of h a(43l b bb.: kvvbfp (n1l75s;sztkpa 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 le3eldu eu 1chx( *t5t7sngth 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 tension is increased to 5dt hlsu(*ue 3t71xce2T?

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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 toohiv 4 56+aepransverse wave. As an S wave travels through the Earth, the relative motio oo+6a4 ephi5vn 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 wavmrbtmgg8 ,;3 ve. As a P wave travels through the;r 8bmvgtm ,3g Earth, the 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 wa(puw x+fyyv 9u 1n-n-wve 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 disconsg+e:bqvw8a /)woj g4tinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pu/)gswb:va4 egqw + 8ojlses?

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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 wf,od q4w5i/xpositive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. ,d4/ifwwq xo5At 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 eaf ugj s:dj o5jh*y.go uw/0me4-2+fikch other on a string. The one traveling toward the right has a positive amplitude, while the ffj*gs5ihw /uuo.de+jy -jk 4m0o :g 2one 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, i+g1lnv/9v p ssuch as a string fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin strit q3hp4e+pbwc,; +ie kng, the fundamental frequency of that string will incre p+c4qkp,+e t3;ihewb ase 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 7xv plts;+co2 stretches 2.00 cm when a mass of 0.600 kg iol+7p2 xtvsc ;s 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 jk .pfsz13ea evw4 kbb.g666q spring 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 pose4.63gk1q pskw6je.fbz ab v6 ition 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 horizontka7 *ty p,/xynbr/j.6dk9jxe al, 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 xn .6dp/aj ,jrkb9/y7te xyk*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 sprinbir(t :e8 :qb;r4kq zfg 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 wqzbqt( k8br4ei f:r:; hen 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 unde; j+nze,me7 vargoes SHM. It goes through 10 complete oscillations in 5m jenea7;,+ vz.0 s. 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 endpgcrp5z :h r/ 0z/gi;2mg mwxe2i /q,e of an ideal spring of spring constant 20 N/qe gz// cmg/2ppirh x5:ig0re;w z2 ,mm 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(zq k p6d(xia: g0-ngfgv: on6 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 the equilibrium position. What is the total energy of the systen:zgid qv(0nx6 - g:gafop6(km?

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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 ;97 / ggz1ozfhht nid4l:3hhn amplitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and t/h :zg9 4hhot7 f1g3d;nznihlhe 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 attache 2p(e w*nu7t5u9 ryvond 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/svn *9 ouny5ru7w et(2p 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 :y*y2qlukx cw 87s 7*9ragwmg 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 the equilibrium position. At what location are the kinetic energy and the potential energy gu792rq8s7l k *ym*a xg:wywcthe 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 endkv :.wk3osl n/aqa )k/ of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m3o/k:s.n a/l k kwavq). 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 attua ;z-wz lx84cached to the 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 mechanix zla;zcuw8 -4cal 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 spring of spring 5f r8bj bmplz44d (:d9-jjk ebconstant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy oz-pl j:48b4f9d j(meb5bjd rkf 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 equilibrium u* 7u7,gsiy kzsd7sg7d dx)se 9pg u50position and released. A fr9s7d usx7gs s0 ,duei7d5py*7g) zgkuequency 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 N/m. Thc8e5mk+iwu-as/,rpt;x h *yx e object is dit si-awc,*m ;5/e8hp+xkxy ur splaced 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 consti2 5ok4p,2 ceh:uohklzy+a/ cant 10 N/m. The object is displlu4 k+:oc5o /e ic, yz2khp2haaced 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*apriw- r5rn6 z4,ghc of spring constant 18 N/m, displaced slightly from its equili4rpwzc 5r hr-g*a 6,nibrium position, and released. What is the frequency of its vibration?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillates at a frequency of 1.27 Hz when di2q+rusqd 45 fcfa(a0 n -mr,zhspc fm2zrn sqhda(,r- qf 4+u5a0laced 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 z: n tj ft,7djq- ql+.u/q f(fy51wjkato different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum spw:qyd /f,fj7. -l (+1uk5tntjzjqaqf eed 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 z*; qtoxvq,y.2-dejm a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an addie ;zx. y,mq* 2vqdo-tjtional 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 sprinuhe5qf6 d+ykj xaz1vu)u ;/,lg. 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. Calculate the total energy of the sysa/) qlxh 5,euv16yu;kj+f z dutem.

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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 sbliw:b i)3*go tretches the spring 2.0 cm downward. The mass is then pulled anw)bb i*o3: igl additional distance 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 g )9ep6 dnwl6fharmonic motion obeys the following position versus time equate9 pn6df)l wg6ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 posf8qkrr1ymna3;. 1-g wgt/ctq ition versus time equwm trr./gk a1g1n-qtc8 ;q3yfation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 tim kbuaj */.p:bf 6t3ie tmt9q+me equatiotp6f 9b bejmt+q*i. :/tuam3kn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 r+ l0m6pb rs e1,ey9kymotion according to the equation yle,06pesb +ry r9mk1$y = 0.50 \; \sin (18\pi \times t)$ 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 forcec3d74oj9ryb ;myrk 7z constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x=r;cz397kj yb7 m4oyrd 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 9k:w.kd s0 yz*he .lrmare its frequency and period e0kyk l * zw9.r:mh.sdon 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. Whl3qsq) b.vo hwtp:.,0+dz fd 8igh*qn at 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 sgtl61acq5;(tvt(6 8 gjhc5nvxwyn 1u 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 l: swzb9y+ d0ac/ fyg*on the Earthw*a/y s9lc0fd:y+bzg?

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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 isxu9d bx y 89 fcl3cg*10vlpw9o 1.0 m long. What is its period on the Moon where the acceleration do3b*dvxfl 9c891 yw9ul0x cpgue 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 consistsdg07n )x5 be 5wt2izpz of a 0.25-kg spherical mass 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 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attachew7zbx5 p)5d e2g0zintd 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 displa1l 7jkl et(c(ucement of 8.0e. It oel((tjl k17c uscillates 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 p zg)afeo5sn hf6i423frequency of the wave is 120 Hz. Whanza456 f2o pe3hfigs)t 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 "snapsh; bg 7u7n+gmia6 kgf0kot" of a wave at a given time. The frequency of the wave is 120 Hz. Whatg 0+a7bng;k6if g 7kmu 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 : ulx6krtua8zo)9 we-aww,dnus9 v, 1 wave is 120 Hz. What is a 9w 6 9u)8etuslo nrz1x,d,v-wawk:uthe 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 a6d/1rt-zl*w ikh.vee 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 w( ic:p-v/nu,i9d0qkkli 7zftr 4ul *iith 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 hask 8cpd 6 faoslmto7-y8dl(g)6 a frequency of 12 Hz and a wavelength of 3.0o do(k 6yl87-t8a6sgf dmp c)l 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 a5g*wb ,r+qzqprvzq51**i mqz nd a frequency of 12r q5p5, z1+ zb z*g*rqm*qqvwi 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 m/s?qvam 6y;n5 p,jtg ho*6

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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 tension of 1350 N.xs6ohpc(cuk t x:3l97 What3 ospc h(lcu79:x6 xkt is the wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is under a tension of 180 e jhe h;4z e-qle6r4v-N. What is the velocity of propagation of transverse waves along the string-jh ee ezr4vh4;le-6q ?

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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 wi* -gz-au++ ep. grlkcqre whose total massl-pg*z+.k+u c age-qr 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 transve j6xz2ibn0 shcem4i4 6 s;w18zhpaub3rse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequenb c in1e3 mzzb2 6i8 j0awh6px4huss;4cy 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 hasv4r- qjxsbabr s*-ye 6kdw,o96; :lmp a fundamental frequency of 500 Hz, which one of the following frequencies vexrw ;:mks6 ,bj- 4ly-d bq*s9 raop6can 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 standing wave d7 *fke;q* bxjeriven at a frequency of 480 Hz. What driving frequency k7f;b xej* qe*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 endsp (yjd zt/xz5+, vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What freqj5pd t z+zyx/(uency 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 1gjl5umfr l/6/inr s2;z2 kq*j.5 g/m is under a tension of 20 N. What should its le/ izg26/;j2 f*k5 rlqlmsnuj rngth 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 j(q :k+h qy3nyp tpo3t*; 6j- qmvyc*blinear mass density 2.00 g/m and length 0.600 m when it is subjected to tension of 50.bhj-qyj3y(o yp t3 ;m +*nv6ct: p*kqq0 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 2vpv w b0hq,e6a frequency of 85 Hz, a standing wave with five le,vb6hw0qv2p oops 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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