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习题练习:Physics Unit11: Vibrations and Waves

 作者: admin 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 procvcz5 f( o,g 5waypg0h-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 7cpm/ 1 ljy8syn-bps3 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 uvpo) nb hz83 xl,;uk7dr7, hefrom the equilibrium point is called th,xukl8eh3bnr ,v;pz )u 7o7hde

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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 displacement yg f j-8u)yz4kfrom equilibrium, j yz-4 gyuf)8kits 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 undergo4 xecvvm((3oqysts ) z;rhb1 9es SHM. When the mass passes through the equilibrium position, )(rh; e3(4v s9sqo1mctyvzbxits 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 undergoes SHM. When the mass isc66l x/ buje0ybi5t:l at maximum displacement from equilibrium, its instl6bj x6 eu/ 0lbict:y5antaneous 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 down between c 8x54fdt fa.apoints A and B. Where is fd.4fc a5tax8 the mass 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 vertics9z9 gxdxmbomk3/q (7al spring and bobs up and down between points A and B. Where is the mass located when xzmskb9m/(9gd3oq x7 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 pointi3l lkp8-l :cre65lz is A and B. Where irl5- k : zc3iepilll68s the 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 betwee*)jj lz;0 7*z9b(6mjwl yuipchqgg x4 n points A and B. Where is tbj(*zcmwg*9 z7 );ij0gj6llxhup q y4he 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 vibraticlw30mvq o:)zng mass-and-spring system produces what effect on the system':c)0 z voq3mlws 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-and-spring ck p7cqpd6o) 7y7nbq8ofps,* system produces what effect on the synq67 ) ,qdo7pybo7cp8*sp cfkstem'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 system .4ai .5: aazvkjravb0 produces what effect on k0 abia:j.a5avr.4vz the system's mechanical energy?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass oscillates on the end of a spring, bothk:w1d2.srsf -m1l gns on Earth and on the Moon. Where is thl.msgkn:-s1dsfw12 re period the greatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k of a mass-and-spring system causes:gxvm2c9 3gvr what kind of change in the resgxgv :mr32v9c onant 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 p); e4xyxse,y-spring system causes what kind of change in the resonant frequency of t,xys)x yp4;ee he 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 mass-and-spring system c0i 3w/mjuk ch8(g elh*5b+rlqauses what kind of change in the resonant frequency of the system? (Assumm l3 i/ubehwckq* 80gh+rl 5(je 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+rihjsci+o9)8 u zh w hp/5 4xzmxx+*v attached to a weightless string of length L. For xu/z+x8+x+rh)zhj4* cv i phi wsom59this 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 tripled, the time required for one dd hlod e+m(mv:. 1lxz / avlzu:6:gy0complete vibradzomd:.g:6l ya he1vdl0zxlu/:( mv + tion

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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 fm(b nv4-x3w6 )jcxx.c;rrl b3.0 m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the perix(w)3mrbfc4crb ;v.j -nl x6xod 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 simplr sh5x0: kub46ioo2 sme pendulum is tripled, the time for one complete vibration increases by a fac0uoissk6r:x 24 o h5mbtor 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 frequkckvxm 36kwk+j837orency if both its length and mass are in6c8krw3 v kx3+m jok7kcreased?

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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 tjsxv t7dt0 b, jt /w5xe.;+. f:rz*kaevx3tithe frequency of simple pendulum B. Which statemej rvtsda. ,tt+fbvjx5:z /.ix* wk37t xt;e0ent is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the accelerat3yr5mu c,hccv6t9; w tion of gravity is less than on Earth, the resona ;cm3cchv w5,y6ut9t rnt 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 represes z:2xq/apu( 3j;l/,pa0vdch euc- swnts


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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 re1.uswg cokr;:presents


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve C in Fig. 11-1 represen 0hmuls(c ju2os -ub080r- *qsllf/qets


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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 yi2z:1yk0v xzof 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 ( yaeuq6istudxb h1zx576;c- equilibrium is called txu 6xc1 azyi7;h-s(b ed65quthe 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 succy *2agg+mwr; rx lqk*;essive 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 waveycc)xp p5g9hkl* kt5;s io9/q passing a point per unit time is called the wave'syt c h /)9os5iqpcp*gx9;5klk

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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 wavelen;-( da rsv g;+3iwyrgfgth 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 bi(6ep w b+.rk-kgqgp,etween successive crests if the speed remains constant?-bpk+p .i,egk6 g(rwq

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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 freqgjh of;kj,:b9m 6 *joruency f. A second wave on the same string has wa,6 bm*hj;oo kg:f9jrjvelength 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 sly9nj; h(z vul9jex65w2m y /string of length L, mass M, and tension T. A standing wave n yyshev/5 x(uj ljm92l9w6;z 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 L is under tension T. The speed of p,xr/wzs:+b g f8ui i2a wave 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 change in b82z ,/xwifirg:pu+ s 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 wavep+(azjc ;u.arnuo 4r8 in the spu(ar;jo caur84zn+ .tring is v. What 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 underyddn1i sv:lf4c4e-4di 03so c tension T. The speed of a wave in the string is v. What will be the speed of a wave in the strin 30ls:-4dsnof y4vei 1 d4cicdg 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 wavex3+a,tlog-7b iefj e e(,t+ bi is a transverse wave. As an S wave travels through the Earth, the relative motion between the S wave and thto+fe,3eba7 ix(b -l e ,+tigje 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 wa z-.-5 9no lmoeow+dbo; se.bxve is a longitudinal wave. As a P wave travels through the Earth, the relative motion between the P w l- 5w bxoo9esdeo.-oz+;mn.b ave 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 ist1,90al ulcqx

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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 discontinuitto .jyd)r g/hfa 2g25sy where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted s)yrg.a2 fh gto25j /dpulses?

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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 96km9it jijo7pass each other on a string, one is travelinoj79 i k9t6jmig toward 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 oek3 * swin2.jwther on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward jnewi s.3kw* 2the 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 wcns5 8:-n lvvxae9td4+: hh(kppz8z qhen

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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 viol -/ayogh2 p. /)if4lx :xbgjqain string, the fundamental frequency of that string will increase )l hp/oq.2ayx-4 agg:f/xji bby 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 masx)* o3 l p q.lt9nsbtn9pn3p+ps of 0.600 kg is sl p tbso)9 xt+n9pn.p n*3p3qluspended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along a .: d, r-aakc7ep15gv+yt hrbdhorizontal, frictionless surface. The sprin- dyh br1 a5c:gk,erdv.ta +p7g 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 jm7/y;ecwxi pbe:d 2 ,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 anx ,d/ ;7wp:eb 2ecyimjd 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 constant 60 x 7qi*z8hlsskf *u;6 vxy4o t: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. What is the frequl6tx4 ouyif7 k qxs8s* vzh:*;ency 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.c5bso znf183v;ylgu3a,.peu f lto+ in 5.0 s. What is the peg.a vcbuts;,1yl z3e5ofpflnu8o3 . +riod?

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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 ideani)mwvbd )q 7q)d14azl spring of spring constant 20 wb 1z 7dn miqq)v)a)d4N/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 position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20* wd(zt).i pto N/m along a horizontal, frictipd z*tit(wo .)onless 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 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 vwx81 1j fa:olJ at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the s1:8 jalw fovx1ystem now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring conuv*jkqt c i5jj) esg.v1(i*0q stant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has *j0i1 jqcv ). ut(ijke5sgv q*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 hor9j bs.gfy* (a j g.ksyjd-(fs4izontal, 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 kib a fkyg. jf-9ds(j(ssgj*y.4netic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of spring ddgf nd5 kj.2 sc, 60rttv2g.qconstant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 d 5jc.,2v0r.fkd nqgdt gt26sm. 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 t/ 59oq ktxn+wu -c8wdcvn k-.ohe end of a horizontal spring of spring constant 50 N/m and set into simpld9cw n- v8wk5qto ck.oux+n-/e 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 v g7f0 d,rmc8mb5agsz63l 1 bsend of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy of this vibrating masslcb0gf 6178zmgsbdm sr 5va, 3?

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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 ( ta,syg1p5wz. 7*-qtgothjlis displaced 10 cm from its equilibrium position and released.,lta7p1y-hgw5oz *.( t qtjgs 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 a spring of spring constant 10n3j je;f+c2j l N/m. The object is jnf 2;ljc3j+e 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. Thosc*+8av ixy kxg gv9)541zxoe object is disp ggxaxk)8zvs 5c 4+oi vox*91ylaced 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, displaced a5 cs (; bzp0ttnn:2zlslightly from its equilibrium posits 0;nz:cplz(a5t2tb nion, 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 oh- +t)dbkp ) mzz:2ni9(tz.+obnun raf 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and releasedp 2diu zmhk+zr zbtnn.9-+at )n):b(o. 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. Mass A vibrates w59x-( qsm2xizo: rgqrith amplitude of 8.0 cm at a frequ :qx 2sr-i(zmrgx5 qo9ency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In ec n6ous0s q,zsafffgp np55(;x95 a9r quilibrium 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 period of pa9695sfg o,;psff s 05uqnx z(nrc5aoscillation.

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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 s+m4 o (1ge,e8txoprfipring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an a8x(mp o4ifgetroe 1 +,dditional 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 streth t4e8m m8xmd9ches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write downexd 9t hm8mm84 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 pos,- kegbr*l.w1bu h3bis tyq; 7ition versus time equat hys71 3-;g.btqukri *ebl, wbion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 followink7cnh iw: k4:f a;g6hf:t iqmx 1f5al,g position versus time equationgkli kn:fihmt :wf x: 645,qfaha7;c1 :
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 versjxlx0ofa u (tw (3)sw,nbvvn e):5z3lus time equation(o bwxazl)ns3vu: ev05 )j(3,fnxlw t :
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 executes3 , r,l(p,n-wuapi ups simple harmonic motion accord u3,lpapw npsir,,-u( ing 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 20.0 N/m oscillates on0dd7lgw+m 4vu a fk7,+vyx.mq a horizontal, frictionless track. At t= 0, the mass is released fr7.4aqddm++kw fmlxg 7,u0vvyom rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings in 8.0 s. (a) What arex)zz y gefss6+k/z-mc- *ki0o its frequency and pe/+oe0z szyksm-x*ki) cgzf6 -riod on Earth?

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m long. What is its period 7jcgcap 70ddp i606ux 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 snehpy u6- s() +g9scmon 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 tp8. hhtw/atnq.rm9 wl0gd.f 1/:ewb clock is 1.0 m long. What is its period on the Earthb p/ d.:eqnta 1.w9ltmwh t .fg/8hw0r?

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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 long55xn 64vsk :cg j /ujugdi,0jg. What is its period on the Moouck6j55:v / usdjxiggg0,n4jn 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-kg spheri)6e1avapqi fbtp (d:)cal mass attached to a massless string. When the mass is displacedba( pi1 e:6)apfqt)v d 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 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 angulaa tp4)yo7x3 tqr displacement of 8.0e. It osc)y 4o7taxtq3pillates 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 hydk)un)xjx8:h; *ryu+scurbe :o2 +time. The frequency of the wav;u rs 8d+ch y:xouyk+h:u *xn)2b jr)ee is 120 Hz. What 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 "snapshot" of a wave at a given time. agjg9 12+nqvefur x9gi(;kr9 The frequency of the wave is 120 Hz. What is the wavelengthjqr x9 +vufnegi ak(9g2rg19;?


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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 fre5hs *v+lc,azuquency of the wave is 120 u*lvh s+cz5a ,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 ot 6geod+du14lj 3kqh()ejr- 9,loida f a wave which has a period of 6.00 ms?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the period of a wave with a frt1nd78n /wlc(s 4rywwequency 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 frequency of f y0)nydv09d11vxkxl 12 Hz and a wavelength of 3.0 kxdly11)d 9 vxf yvn00m?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the velocity of a wave that has a wavelength of 3.0 m and a frequency of8 dgr4a 2dg-ha 12 g4adadh8rg -2Hz?

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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 e6nvh0 )(j0e ma (jnl6itps z2traveling 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 lin.hm tkn, nmo/,ear mass density 0.0050 kg/m is under a tension of 1350 N. What is the wav ,nokt nm,./hme 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 N7trt:9p6/rynef du) lo u*fk. . What is the velocity of propagation of transverse waves along the .uo pr:nyfe7ltr*u/kd t )f69string?

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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 g t sb1(/y/wter0wqc:a 500 m long wire whose total mass it:wrgwbtcyqe(s/1/0 s
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 b0+of tz)- eaeu 6-hnk;7j- dvdtli/la 2.0-m long string fixed at both ends is 200 m/s. Which one of t-e-if)l u6; btdzjhal+/0to vd7 ken-he 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 Hzsvz/6 a5 e3rmx/3ei+jd 4cpor, which one of the following frequencies can sv/p6e + dic/j4sma er53xro3z et 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 ifx j7j2 upe0 l8t f(o9d9qm)res observed to have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a)2j9jue(8f07frx epdl tmoq9 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-1jre*x g,xl6 9uyej y frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to contain 4 loy9x*j1ug- l xeej,y6rops?

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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 Nln:0.ctuf n/vc(s cw *q4/23z upmlll. What should its length be if its fundamentn4*l2q un/0(:stwc zpc clf/mv lu.l3al 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 density nu d9pdz h9f,37khaa;2.00 g/m and length 0.600 m z7h9;a9uph3 ,adn kfd when it is subjected to tension of 50.0 N.

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99#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A string of length 2.5 m is fixed at both ends. When the m2sabl:+,txq string vibrates at a frequency of 85 Hz, a standing wave with five qmbls :a,tx 2+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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