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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 proc j1 e+m4ccvd5;gpm er:ess 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 e,ed9af5vm/; deu0cx number 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.7d xl.bc2 nlh the equilibrium point is called .b2ld.7h lxcnthe

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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 mass8(u (dk fb/j/g*jkdhph; bp+e13 av wm is at its maximum displacement from equilibugbd+*/kh/3wep fv8d j h1(( ma;jpkbrium, its instantaneous 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. 795 n) xii8cje1n(i b,it h*3zhnxyr aWhen the mass passes through the equilibrium position, its instantaneous velocrx 9h zhtxy815i j,(a 3*n)nnibiic7eity

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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 dis5hfj o*0ma1ltplacement from equilibrium, its instantaneoa5mt*o1j 0lhfus 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 spcn2: p (cou*/eyc/q hcring and bobs up and down between points A and B. Where is the mass located when its kinetic eneph/2cnu cey*/q( c c:orgy 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 po8ixq*e7ge:wsmc 2z rv, / ix8p)g3jztints A and B. Where is the mass located when its kinetic et)e*gjrz 7q/v 2zpc e8i3xxsm w:8i,gnergy 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 vertica2;h mh8nmfj3zl spring and bobs up and down between points A and B. Where is tjfhz 2mh3n8 m;he mass 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 to a vertical spring and bobs up and down between poij w 4jas23qzdl;z lnurz*) -p2nts A and B. Where is the mass located when its potentiaq uznr2z34 zj ;j*2-lpsw)da ll 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 sys2 k9razlv)puh5qms8c 14 r*dktem produces what effect o4 pvurz1 chq29k) adk5*mls8 rn 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 vibr kr2 x/31cp-b4o:kxmk.sg g -wka6is n .7iofgating mass-and-spring system produces what effect on the system's mechanic7 csink4 b2 m: i. fgpxsox-kkg1kow3-6g./aral 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 spri)bptc+p l )r a:-7 t/mscyo.hfng constant of a vibrating mass-and-spring system produces what effect on the systemtpc7yopf)ch .l-ra)b: +tm s/'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 sprihqsdt 0jv9qtm:,,q3: csd)sp0 ru8 dang, both on Earth and on the Moon. Where is the period q,r0hvc,a:qdtq) pstsm 0 3 u8sddj:9the greatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k of ;9z /og df1ez cjtx3iw;w09iqa mass-and-spring system causes what kind of change in the resonant frequency of thw 9eo; i c tx0;zw9giz/qj1f3de 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 systemxx )5ixb 7dr7v causes what kind of change in the resonant frequency of the system? (Assume no change in the syst i75 vrxxb)xd7em'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 cauk ;x(31-sy n m5z k*tswa:mm (blyrh0hses what kind of change in the resonant frequency of the system? (Assume no other changes in the sysx3lh;y *mkbmm (:0s ahszt(5wy1n- k rtem.)

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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 ma d5tfkxs i;1d5ss M attached to a weightless string of length L. For this system, when ud fski5; 51xdtndergoing 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 8;i a6o,(oo:qmh ewe lf w5ep*time required for one completeoeqp6a *eh,l8m wf;o:5o(iwe 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 T. Pendulum c* ecqmaai*mv5. ue** A is twice as heavy as pendulum B. cq v eaae mm5*ui*.*c*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 tripled(a6 y7f4:srqwp kfok7qrx5w/, the time for one complete vibration increases by 6o 4 kf5rfqy/ar:x7s (p7wkqwa 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'sufmkl /ag4b. 0/9v sfe frequency if both its length and mass are increased//gaf9 . sbl0kvuef4m?

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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 frequen(./g vru: t,kxd,mvdzql +:hkcy of simple pendulumzgkkx/rvl:.,d:(mtu, dvh q+ 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, whwy7 q oxcz58ez,;g4 zni;7d cmere the acceleration of gravity is less than on Earth, the resonant frequency of tiz mnxzy4;8cq ,ecw d;z o775ghe 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 r q360inu(5oxy pl d2krepresents


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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 repzkkb *2;;54( k4y1(epkcrywevk lyqeresents


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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 re90f pwv1d;e3e e8pk,k hjx efq+1cv5lpresents


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, the amplitude oi9.*y li/vjcio v82b4krur8 tf 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 ki.zxoht 1g *2wave from equilibrium is calle.k oh 1zgx2*itd 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 c5db, il3sw vxo;7c onfla,5 a/rests 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 pointavcla9w( pu4*(j nqc/ per unit time is called the wave'ua (49qwnc( /ca*lvj ps

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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 theeygofau9 5+jk.dz0c 6 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 2b 4v2km svfzr :;*;ifmhrc9ow:vno ; happens to the distance between successivekrmz:c ;4i2 nrv:9f bo*o vvhfmsw2;; 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 wavelength l and frequency f. A second wave 7x-m)lvh0he nvd1m 2xon the same string has wavelength 2l and travels with the same ve vxl)0 hdn 2-exh17mmvlocity. 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 length L, mass M, and tenmr wppy4k )j-)sion T. A standing wave is set up. Which of the following pjyr) w)km-p4is 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 brw4bz 8-xu/q in the string 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 chaz4xrw b /8uq-bnge 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 speedlve9mb-yiq)c2 j13yqii(s b7 of a wave in the string is v. Wy1)s9j i yvl mi2bbe(7iqcq -3hat 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 T. The speed of a wave in the c-r 1/eys:udhstring is v. What will be the speed of a wave in the string if the tension is increased to 1ehd ycu-s r:/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 wavezp3qj 1.4jxku::tt s u is a transverse wave. As an S wave travels through the u1q.sjp3 txktz :4ju:Earth, the relative motion 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 t3cykaa,jn t2: iq39kwave travels through the Earth, the relativejkayiknc ,39:2q at3 t motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wave isy hx(uiq bx(fdy (i2;.8 ge:qj

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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 to1g m+) :6 buqkrdputy- the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and tryq b -6tpu:g)r1 du+kmansmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positive amplitudes pass each other on a string, one9m6, 9tfp.szpfxy4i h is traveling toward the right and the other toward the left. At the point that they occupy the same p fhp,zmyi4f.9t6sx 9region 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 7zaa0 20eooid+bsh 7k other on a string. The one traveling toward the right has a positive amplitude, while the one traveli2ad7a ooe b00 ski+hz7ng toward the left has an equal amplitude in the negative direction. At the point that they occupy the same region of space at the same time

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a system, such as a string fixed at both ends, occurs whenc. e8p)gf zuzq svti,yt3 -p1ou xj9,6

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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 string6v; be(u;p*n3urqttu xr2p3 z8v usy9, the fundamental frequency of that string will incnub;zv36* ypu8t (u9q;pxtu3v2r e srrease 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 const-mntg0yf(cn/gkr m/( ant of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended g-k(f/rgym t0c/n(mnfrom 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/( bf;vkqdeh 04m/n lt mc9q:3vm along a horizontal, frictikfqnvh / (l9cd;bt 0 4qmmev:3onless 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 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 horizontal,rf/7 65yjije g frictionless surface. The spring is initije6/g7j 5iry fally 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 spring constantd5jhaax.r+ kwhvy ei mu (3v3r ;cb*/ ohg*;v8 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 equilv3bx cga+uy8 5; hk3hr;wa /*j(dovver m h.i*ibrium 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 oscillations in 5 wr6u.nowg70epj k r1).0 s. What is the ng r r7wk u61j.0peo)wperiod?

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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 idearz6jrzs5 1.ssl spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is j51 .6srsrzzs 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 spfpqf (9)g(hjupr8nz 4ring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a spe( ) h(z f84n9rjuqpfgped 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 amplituds,(wa0 fxb9nw-rql(t e*hg 5qe of 4 cm. 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 xrhn(f,(l ebsg -*a q9wwtq50 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 spri64i wlv.ko)y1o7m jvfng 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 equilibriumvo o1f7v6lj.k wy i)4m 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 sprinu5ko)cht6r4 .2nd pw mg 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 an)c4d6t .opu mkh5w2rnd 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 eepo6vzxzs;: l(hg0*sq /hv9vnd of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of thizh;pg9zs0 x/ov v*lq e6h v(:ss 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 hol o4oq:5 ;i*vx)6jl 3xjdmtp*otax u5rizontal spring of spring constant 50 N/m and se5: *5;vql oom*xl6xjojtu)ipxda 3 t4 t into simple harmonic motion with an amplitude 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 xa6; v5f)qm as;o -a-*m unmxhan ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy of this vibratinmshq mv*u m;xao) a-;anx6 -5fg 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 displas w63vlb2s lhmp,io4 ;ced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. Whss4boplwml, 3vih ;62at 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 attachedir 00+ wp0if7ve w(hff to a spring of spring constant 10 N/m. The object isi vf wfhi00prw+0fe7( displaced by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/m. r2 g-pbxz3rb4bl8 .m g The object is displacedxgzrp2.lrgb8b m3- b4 by
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is hung from a spring of spring constant 18 fxt)s;erb(nju 3y9 q7 N/m, displaced slightly from its equilibri3 fj7s(yqtr )eun x9;bum 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 t ijo98 ry(w* m:c+ g2yhpdcgf*o a spring. It oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium yfc*go+rcp jmhg2(i9dy* 8w :and released. What is the maximum velocity attained by the mass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, are attached to different springs. k3pcj15 vrur45gj )/xynrrm8 Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz 8 4 xr)uykrcm55/prrjv1g n3jand 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. Ini ikgmrk 6. 4yx..cr1k equilibrium the mass stretches the spring 2.0 cm downward. The masxm4i1.6ck.yi r.rk gk s 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 equilibrium the masx05lmq3xv e d m0ne19ievxs/1ssof )6s stretches the spring 2.0 cm downward. The mass iso)e9130f6x sxsvnvexed10 m mqli5/s 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 midwn*us/eya8s.x4 kyk+ 0o;b ass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.08isy4kd+/eu *o 0ysabkn. ;wx cm down and released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion o7pm8gyx*4+6fmnw- /ji 6ft9p iw jb aobeys the following position versus time equ8fy/pn7o4w6 +jw 9ti-gi f6 j mpmax*bation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 position versus ti, ob3er9 h8zs))nad cos,t0+h9z ugztme equatitozz9r)c,9abt nh+ 83od,se u zs)gh0on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmoni9n:-fczs 2 ytwlz4c* (v xxoi(c motion obeys the following position versus time equac(y:* - vzxlsn2 xi oc9z(w4fttion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 s(bzlb9h;z ;.cfvb +n oimple harmonic motion according tonofzzh;( b bcl +9b.v; 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 sprinkixma.86hh+ 6lm tqi0w6ac p(g with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0,l t(0 ch iwx6 66+m8.mpaakqhi 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 compcp0dhmp3)det :8g9bm lete swings in 8.0 s. (a) What are its frequency and periocdm)9dbh 0m t8e: ppg3d 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 longrunjv *qhee -i 2pm3(0. What is its period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Earth. Whatdfr-p(a s2 ueo2)*mf8s d :/ehmgca9v 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 per : -sxnj1kk4r+sybky4ur4 c,miod on the Earth?xbsykrk 1 u sy m,r4kc+jn4-:4

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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 grandfaxivsklgnr s +(4:4vh1ther clock is 1.0 m long. What is its period on the Moon where the acceleration due to gravityvlx (srigk4v4n+sh1: 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 consiaan g r, pchl*:d8-m1g/z,vgo1n sed5sts 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 a adengg5dnvc a*ho-ls, / 11r:mpg,z8ttached 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 cons j xk;s(8wc0vpiox:c8 isting of a 20-g mass has initial angular displacement of 8.0e. It oscillates with a period of 3.00 kpjcx; v( 8i8cx:0sows.
(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 frequency u;.oodw v3i(k+n ag k9of the wave is 120 Hz. What is thv kka(.3d+ow9g iu; one 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. 7fe(xmd;)db1ga;0/npu vn 38hy0 4f wuzrcvu The frequency of the wave is p 38 f40xd7/av u)0bvnwh;(mf egnudzy;1 c ru120 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"+xzqu . 4)-rzvjqyn 2n of a wave at a given time. The frequency of the wave is 1+4xvqjn) nyz- 2 uqr.z20 Hz. 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 which has a period of 6.00 ms?wkx;o fwh58(q

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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 ijorq*q s./b7a 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 h, 7s) k-)lurrxc3ikfa frequency of 12 Hz and a wavelength of 3.0-l7xrrhk uf, i3ksc )) 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 4pj*j m2pyg 70bbly(g ) hkf6ta wave that has a wavelength of 3.0 m and a frequency of 12 Hjypkt m4hf7ly6( bjgg)0 2bp* 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 wave traveling at c wf;-bsf07 /n q5jyfr .vl65ipbeup (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 tension of 1350 urj94 k(ps-a(*qnn drw ,jwp0 N. What isp,k-wr94*jqsjurn (wa (p0nd 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 N. ;g.rnj)i9mq ,vcfo r/ What is the velocityjqnc9fo );/ rv,m.rig 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 traveling down a 500 m ljf; d(rhc ul.;ong wire whose total mass . uf;h;(j lcrdis
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 st +eu tusldz)i//n2 9*zmh5uzuring fixed at both ends is 200 m/s. Which one of the following is mu*z2 u//zniu)9 +sht 5 ulezdnot 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 p73ts 6sxil:0u g8t lnHz, which one of the following frequencies can set the string into resonant vibra7u6g t8snxp3:stl l0ition?

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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 obr; rdz-ul5 b x)1ky3nxserved to have four equal segments in a standing wave driven at a frequency of 4yxrn ) k 1zlu;-5xd3rb80 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 frequency of 12 Hz with a standil 7cy; rk,ux2tng transverse wave pattern containiny 2tuc;l,xr7k g 3 loops. What frequency is needed if the standing wave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 1.5 g/m is under a tension of 20 N. Whatl v88tp. m.)ko*o josb2hc 5a.hmi:t s should its length be if its fundamental resonance frequency is 220t svhih p bo8o)ks8 .a*om2j5lm.: .tc 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 densitymhe1 y.iji8sy8/o/9ibw+t vc1ve i f+ 2.00 g/m and length 0.600 m when it is subjected to f.ybm ewvij c9818/yvto+e1 s/iih+ i 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-fg:b9t- -g5qwgvj saz5i ,ugtdl v )8 the string vibrates at a frequency of 85 Hz, a standing wave with five loops is f5t-z dggif5:jv8gwvasg-,bu t9 ) q-lormed.
(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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