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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 is calixn ry0d )dm mb ftot6+hr)0/0led 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 k1:yce4l0cbcbwkwuc74 r99r 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 equilibrium point is cre j.8k y:mtt7at8.y :jemktr7 lled the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring unz,4 hoz*io2te2d1je 4tdu:nn dergoes SHM. When the mass is at its maximum displacement from dj1hont 4n4: ,tieod *2e2uzzequilibrium, 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 S8, t kfpmz665py.pm feHM. When the mass passes through the equilibrium position, its insp kmtf5m 8p6,yep6z.ftantaneous 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 displaceme:rmk zqp5mm)tvifhf 3 ,)-)bkqr8l s5nt from ek k):mtm-)q53ih r, rzbfsqm lpv8f)5 quilibrium, its instantaneous acceleration

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring .7i3tkfw6pe d1s3 kbj and bobs up and down between points A and B. Where is the mass1t. fdwk6j3pk7b3s ie located when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring y+c4cenh krd+9f8afb 8ypj 5+and bobs up and down between points A and B. Where is the mass lo epf yby5f+88c ndr+ca94jkh +cated 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 spring and bobs up and down between poing nf ll2kmtn2)v;og8 /ts A and B. Where is the mass located when its potential energy is a minim2 8k ngll) tg2ofn/;vmum?

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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 points ;g, fgeek4;nkA and B. Where is the mass located when its potential eneenk e;fg;4 g,krgy 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 system produces w;*e+t7hgi n. zykce0m hat effect on the system's mechanical ez. 0+k neghy;m 7e*tcinergy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-spring system *k)xxqs+y(8be w ) h:(v mdubnproduces what effect on the system's mm+bwbu e()s : xv(dn*)qxy 8khechanical 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 5m4lv( ulm q0e8+kkzksystem produces what effect on the system's mechake (mllmkk 8vu0z+4q 5nical energy?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass oscillates on the end of a spring, both on Earth and on ) b3plt st4f 3ex*mvs1the Moon. Where is the period th1m p3tes)f* t4lv xbs3e 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( qyeh. hy.0ut constant k of a mass-and-spring system causes what kind of change in the resonant frequency of h (.uqt 0.eyhythe 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-an1gahgeenpk ex.-d816u oa*w *d-spring system causes what kind of change in the resonant f* eh1g6.no8xp daak * u-ee1gwrequency 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 amr0tm4u44 9pl n1cvz c mass-and-spring system causes what kind of change in the resonant frequv04 4m4upzcr lt c9mn1ency 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 string of r0swnlu ksvl-8vq*320b t9j dlength L. For this system, when undergoing smvudb 00nk8 -q*v w3 tsr2l9sjlall 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 timejer dc*2g uy:6xqkx: d/3p(2(xl k rlj required for one complete vibratioy (3k*rr2j:/cxq2 g e l6ux(xl kpddj:n

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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. ite.p9 9/g egiPendulum A is twice as heavy as pendulum B. What is the p/tg9 gpi9i.e eeriod 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 triplec +u31we)vv.diev3y s-5r; p3ij fjnad, the time for one complete vibration increasjiwsvarv+y3ju 1) 3.civ-3; 5efnde pes 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 andw(9sj3gr t7 .+fara l.u8r)ieouk 8 rt mass are increas7jro98.wi k t(8.ru)lusfrg ea3t+ ra ed?

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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 tvvb9;oavw0v9 +rmrz4*b.gdj r 4ux0 twice the frequency of simple pendulum B. Which statement iszw*4jr.rudtvxg+ 0a 9ov m9v4b ;v 0rb 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, whko1i-c tvo eo) na+9 n(3mlry1f9s3cb ere the acceleration of gravity is less than on Earthmfi (y+39a1n o3-er)t k9nl 1svbococ, 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 repl,l ao 7og2i/yu6xv u(resents


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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 repres1mbsx3;kz i)s ents


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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 rep - jaqcp9,1rijresents


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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 of vibration i2w:b 9xsle 7aur0x( sjs 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 equilibriszakxw +y7.m/o7bqr 8 i*5c hzqm4 (flum is called the *y4wcl qz5bfoi7m.qkz s8mh(7 /xa+r 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 successi54rp:w oat3gzve 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 passing irze9z )4fcdj ydi3 ,)a point per unit time is called the wave's ,r9 )c4dz)yi 3ifjdze

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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;lc2:8zay.uxa2ln3 2a- q 0t qs* 5plgdawysf 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 betweem4:ay-qbm u +uftp29( pynq2 kn successive crests if the speed remains cotu-2 qfy9p+ymqb k4map (:2nunstant?

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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 onrv sybq9 iwj::hn-pp )* )g-mp the same string has wavelength 2l and travels with the same velocityn--vj) w)*pq b9rs:ph p:igmy. 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,;)jdfk z8 koj- mass M, and tension T. A standij;jf 8k -do)kzng wave is set up. Which 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 akf/o1lue yv* y7/pk3jh+ k a)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 ye1pk* vya3kkal/uh fo)/ j+ 7if 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. The speed of tz*i:-f zoq;t bbc :z7.zr1es 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, with no change in:e;br-t*7zzqi1 zosf c.zbt: 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 undx6gz2u4s j(k)7u jx rc)z mgi8er 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 incre7j6 ugik 2z4jc)mx8)g z (xsruased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wave. As an S wave tcps/h)z:pp 6s6sxr.i ravels through the Earth, the /:r6pp 6)c.spssxh izrelative 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 wave travels:o7 vci )8.phzi zyszx27-lln through the Earth, the relative motion between the cliz2p v-y:l77oz hxn.)i 8z sP 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 wave6*d,2 togw*whj jat1nbj(r ab+bmn0+ 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/ jxr) vpq2rr/ where the rope becomes thicker and heavier. What is the orientation of the reflected and transm/vx)pr /jr2rq itted 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 strip4 d ) hxm o,eyv/mtb,(5z:bmnng, one is traveling tod op,/tm:5e m4, m (nxbhz)vbyward the right and the other toward the left. At the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. The one ty p/p) bhzxm/ il3;70.zg sudwraveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. 0bdwh/;x mzz7/)s3ppil u.gy 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 stfixl d5o o9l6.ring 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 tensiouvdhuo7g.q kl5 k)-x+ n in a violin string, the fundamental frequency of that string will increas5 g vlk u.oxuk-q+7hd)e 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 consd28aikql:x7gr3*gp1e izrzaz 61 7h stant of a spring that stretches 2.00 cm when a mass of 0.600 kg is d g 1rp* hk7i7zqisae1: 8lz32a z6gxrsuspended 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 6u;ts(ye a: ;i pdoe ;20j0aekh0 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 when it is oscillating. ha ae0( ;:; d;2ypi osekjue0tWhat 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 con sdwta(:+.z4zty-5aulf4 sw.x q6bv nstant 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 when it is oscillating. Whawt4: st4 yf6u d(xwz+za5sbl .vanq-.t 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 along a horirg vb 7e mkml9p9sag+t/z(o;3zontal, frictionless surface. The spring is initially stretched by a fo g;l7 9(paozg e/t+m 3mbkvs9rrce 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 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 goes0d .8 aakygi:j through 10 complete oscillations in 5.0 s.y. 8k: ai0dgaj 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 foh 1w(ytq3c0t*-d ge ijrth from the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this viq i1hjg3 (tc*-ewty0dbrating 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 spri*qw1)yf af rr.ng constant 20 N/m along a horizontal, frictionless surface. The .*1yaffrrq )wobject 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 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. The energy is 8.0 J at them ,p*5jhtj5 ey0 5dqhis time. The mass is cut in half, and the system is again set in motion with amplitud 5q5ejt5h,*my dhp0eje 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 o sr1tk9;yc /lsy-y-u bf spring constant 20 N/m along a horizontal, frru- s s9c1 y;lt/-kybyictionless surface. The object oscillates in simple harmonic 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 j8sj r/dou(t1):fz javq (hyvvy5,: d 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 locja1h(tqyv5v 8 d:, j jrz:s)vo/duf(yation 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 spri nw*as1gyt/1m xh13 d+;vxcvb ng constant 50 N/m and set into simple harmoni+xm gxt a*b11 sc1;d3yh/vnvw c 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 spring of spring c/sim5a4hgfvugr;( t * onstant 50 N/m and set intost fi*4;/r hugvag(5 m 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 an 9v c8*cx +*klhzk2vrkd forth from the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.+cxk9 k cr*8h2lvv*z k250 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 s.62 ds09kn dsd k5goell-akye77o8asystem is displaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced dgl 6.7- sdkk 5od0aso2 l9 ek87yaesnonly 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. The oh) azv kq.9wmjtly h1a,;z,1tbject isyz; t1q,hava.9lt1k z, w)mjh 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 vtox78 :),c wtg-vy pymfgk3 9to a spring of spring constant 10 N/m. The object is d:) y 8mcyfp-9wxv3,g kogvt7t isplaced 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 N/m, displac6a /e)l3frrvded slightly from its equilibriul drrv 3/fe)6am 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 ojwx;g-j2g1 v a spring. It oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the mag xw;1v-goj 2jximum 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 s/h (v b4u 1tam4fff1;q odcal2prings. 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 doe aaqfl1cv4uo2mb hf1;f4/(t ds 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 equilibrium the mass stretches the sinzgwwde c (2+qxsbi ;hby4+h8vl89v0h 2tw7pring 2.0 cm downward. The mass is then pulled an additional distance of 1;w4q+t2 +b2xcywz d 9( vvibsg0li7 he8w hh8n.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 mass stretches erxv ngfnqccq: );(a4v d 2:,hthe 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 syst; v r :2:,4gxhc (acqfevqn)dnem.

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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 equibq4:;i ;sszeslibrium the mass stretches the spring 2.0 cm downward. The m qbs;si4s; ez:ass is then pulled an 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 har5zt3rpf-/t2+swmj zzvj: t *lmonic motion obeys the following position versus time equatit-zjtm5*w3 zv t+szjr /:f2lpon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 time ebx30gz8l5;7a g;j k v.l xirfbquationlxzx;;b7 5ar jl0gkf 3b8g vi.:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motion3y90:( mw ,xakywsxym obeys the following position versus time equation,( a 0y9y:xm3mykwwsx:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 siu5p/ijei s3n ur:02kt mple harmonic motion accordinn/kret5 u : i2ij30upsg 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 constant of 20-um7 4tr72pjyajad 8a .0 N/m oscillates on a horizontal, fa4mt a82a yj77 jp-udrrictionless 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 +oa ztib1 x26uh5 vq+v8l7jk wswings in 8.0 s. (a) What are its frequency and period on Earj+x8q7b5 tvuo 2z1khawi l6+vth?

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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. What is its vvxrel4;5,ld yz .pa-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 Ea7el en zwue 163o:;pzxrth. 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 c agrvu3zq-6ieovdc,k2 ,1y,jlock is 1.0 m long. What is its period on the Earth?2ru,16dvzj3icayo q,k ,vg-e

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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 is 1.0 m (4gqou yahhs r(e/r./ dion51long. What is its period on the Moon why //dh4qnraosreh .u1i go5( (ere 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-kg spherical mass attached to a massless s/d k2 jry2vkdh -i8or8tring. When the mass is displaced slightly from its equilibrium position and released, the pendulum si h2yok-vd d88krjr/2wings 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 angular displacementzvwe( l /iq0lx*tt:8 u of 8.0e. It oscillates with aiz xel:vu qw0*8t/tl( 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 wavey78cpl q tvik/s-d-q8 at a given time. The frequency of the wave is 120 Hz. What is the amp7q8y8t s-pvki/ lc-d qlitude?


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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 "snapshocut8)mjrd2 vy h)zcs x3;2j1 pt" of a wave at a given time. The frequency of the wave is 120 Hz. mc3x2zp8 rv2 jydcj);)1usth 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 zqc78)rzdh 9 l g5;ttggiven time. The frequency of the wave is 120 Hz. What is thelcq8 ztgg)z;59d h7 rt 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 *8rmssi1:yc hfmp(g,o m8i6hms?

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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 f-r7-7qx fljzkrequency 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 frtcrg t zs/fiv(2p8f ,1.f0de dequency of 12 Hz and a wavelength of 3.0 m? g2r0 t( stcdfpff e/dzv8.,i1

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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 thattn, mdr5b yfvkrj(:g4e68q1 u has a wavelength of 3.0 m and a frequency of 125bgrnq(y : 6r mu4 f18vd,jtek 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.e4 z2pmg2u/(lajgd l /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 0tqg+5zmeos k , ;ytn65.0050 kg/m is under a tension of 1350 N. What is the wave speed y,s5e5zo t6 q+kmtng;?

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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 underzkhe/zgk p 119 a tension of 180 N. What is the velocity of propagatiohkke9z 1 1p/zgn 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 long wird7 x2 nt.p)r :mi,lgoge whose total 7m :2d, olpi).ggxntrmass 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 anhp.,vq n)ol7 2.0-m long string fixed at both ends is 200 m/s. Which one of ,nqnop vl7)h. 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,vy; vz 51t7mvi0y m2d ew/aez 8cffd)6 which one of the following frequencies can set the string into res ye ;imfva17dc)mf/8y60 5 zzevwdtv2onant 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 2f31kg,8ak- xdgd(ajyocn8 lequal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with fiv-ykd31 2,axn 8cgk alf(8ojgd e 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, /i o/2qzjo1xi tv6j/pvibrates at a frequency of 12 Hz with a standing transverse wave pattern contai 1ii/vp6ot xzqj/ j2o/ning 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 20xtf 1 /2+qpm:siay1 nm12is2a ik1g ju N. What should its length be if its fundamental resonance frequency is 220 Hqa aymsx t:1kgii+1f2 i js /up12n1m2z?

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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 density 2.00 e(3:4lsmwyxov jcxc.4- ryk87ygpflnt s60 5 g/m and length 0.600 m when it is subjected to tensioc0re(fl 4 jvy s8y xm3xs65pnog4 wl-y.7tk:cn 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/-u* .k jnwt1 q8oofmt ends. When the string vibrates at a frequency of 85 Hz, a standing wave withwk mf*.8o -ttjnqo1u / 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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