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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 cnb 6f ilmm9xxy )c*c60w*a4n1e eil 3of 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 called tmwm6vori3 qw69)jo,3p i-q,mqv y g7w he

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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 equilibrb1ml ,ow1apbn i*+.azium point is called 1ol im+,.z *pabanw1bthe

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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 displjas0oo 87zo,e6k2rxn,ebks y 5twi48acement from equilibrium, ws2o5,8no,680o e s jxa k 4ketz7rbyiits 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. When the k7tf4vj a.dw k+n0.ugdnq7 x-mass passes through the equilibrium posw7+un ddf4. gk-0 t avknqj7x.ition, 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 undergoes SHM. When the mass is at maximum displacement feb x h1jyk 2k,mh5uj7f4utb7* rom equilibrium, its instantaneous accel2hj kt4xjm u 7ekb*h1,uy57fberation

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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 bob5rmvno+g: . 9yqrvf i,s up and down between points A and B. iqnv5v,y r.o+ f :mrg9Where is 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 vertical spring and bobs up and down between points A asf-w;2n i 4bvhr 6)t ofmqba9zp9/6cm/f dg3qnd B. Where is the mass located when z6ro2/ampw-9 hfdb)ibm 496 cv/3tnf;gqs f qits 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 betwoxjc9yhik0v ,.30i e0fs.qrd een points A and B. Where is the mass located when its potential eni0k 9ydr hsf,jv q0i3o0x .e.cergy 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 spri )slouti0iy 1tfl +-4vng and bobs up and down between points A and B. Where is the mass located when itsy is1f-tl)i lv4ut +0o 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 vib6ng b6am cqy82rating mass-and-spring system produces what effect on the system's mechani8cna2y6b gqm 6cal 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 sysi4(yla v(w.f qtem produces what effect on the system's mechanical (fy4qva li.(wenergy?

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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 vibratiyvu /5v bqo.8k)sm8 csgz:9w qng mass-and-spring system produces what effect on the system's mecvqswv8coy.):5kms 9qb8 z /gu hanical 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 sp2hya(m/3 vu*h8f g qyfmj4ym)ring, both on Earth and on the Moon. Where is the perif 8myg*qm ( ajh2mv4)/yfuh 3yod 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 w/y.h bg1resmu g wjc08o*n1 9fhat kind of change in the resonant frequency of the system? (Assume no change in the system's mn/8h b*u0gm9r eoy.s gf wj11cass 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 what kind of chan;t7bp hsc30zbt; ) rbtge in the resonant frequency of the system? (Assume no change in the system'r)03c7h pt; stt bbzb;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 kind of chang daevtvy,c) z1.z/ z3t8zdp3 zqt9r 7de in the resonant frequency of the system? (Assume no other changes in tv.q3p ,yttr9zz3) ed1vc a78 /zd dztzhe 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 att7scz-io 6 wp 5pe*8memd9a jnc72.vcgstk.9yached to a weightless string of length L. F92sm.jswp- cke78atvyndm 6 g7. *cz9o5cepior this 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 aq7(tpf7ie o., the time required for one completeif 7 p(e.qta7o 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 periohbso)3xa 6o6m- /h b/o*mxsil d of A is T. Pendulum A is twice as heavy as pendulum B. Whatl-36*m/h oai x/so b6s)hmxbo 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 s97 tdilh;qfws+d 7i) pendulum is tripled, the time for one complete vibration increases by a factor +q9;) 7 dshiid7tf wslof

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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 pend+.;uaer+ b gnkulum's frequency if both its length and mass are increasedur;b+na g .e+k?

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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 frequency of simple p 2ry,; iabu,meendulum B. Which statement ;raybm u,,e2i 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 acceleration of grp3z hc8 3t+aue cu a3lj1.up9xavity is less than on Earth, the resonant frecehuu z8c.j3tl a39 ppxa31+uquency 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 representss8ll6l (xcd x4kc.l9p sr*p0qengz (;


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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 represf, ewxm1rd7jw o) d5zq4dt;n(py g :t.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 represen aabwla6y ;,f8ts


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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 is founh 1e cwhi8ioxrhz.) 7-d 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 8 o+ jx5wtut2idee: +kequilibrium is called the ekiude2xot: 8t5wj++ 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 successi7 7q:j 1k69rmij;ctsxcn+qbi ve 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 aem* ugzzp;/kv-4g9 g/hmb 7a-i ykx2i point per unit time is called the wave's2xz/ 7;mbpi giy/-*gzg e-khu m49ka v

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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 ;ej hmjvtk4 /x ,:b0iowavelength 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 distankba4wjm3bt1a3 . av10f erd9z ce between successive crests if the medz913a ab wt b0a34.jrv1 fkspeed 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 fr 9k3umck 8h/ 77hklk:qhfruf3 equency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency ocm837k k/hf7r3uhf kkq 9h:luf 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 tension T. A ssk-b* )jd;q3ba c oof(l*e +iyvpf+ ,wtanding wa fbi (3+,*;*+ake obypscwodf )v jql-ve 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 und9h a wg 9of(r8ngz/rmfv/+wn, er 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 mass of the string is infv f9 / 8z/gngm+r o9a(wn,whrcreased 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 tensiod+/y*9ge:c cpb npyd3 n T. The speed of a wave in the string is v. What will be the spp /9dyn*e3db+:c gypceed 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 u0hkf*qsz7.t* qlmisu.)g- xa wave in the string is v. What will be the speed of a wave in the string if th*txl7q u.0m.sz g- *s)ufqikhe tension is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wave. hz)*xdhkwx 9, As an S wave travels through the Earth, the relative motionxk hh, wd*9)xz 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 d95 ji6 l9rjtowave travels through the Earth, the relative motion between the9l6jd5ro9 jit 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 ist dl*ps:,ph c5mwy c cf;q627f

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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 thins v1-6,skzkts g;0vc fhu+,wj cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses?sk60s v1tfgjh,ks v,; u+cw -z

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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 e 3qv h-g;)esrpqual positive amplitudes pass each other on a string, one is traveling toward the -v)ehspq 3rg ;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 eachjn;1qa0n1g vhso+4th other on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative dsg1t qn;jh1oah4+ nv0irection. 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 when xu/)1et-l hs +zy.xog

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundam csf66 sf3w(qmental frequency of that string wilff3c(6 wss6mql increase by a factor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring constant of a spring that stretchez4mhxyjnl;t k +c5e07:cjkogn u,r-7 s 2.00 cm when a mass of 0.600 kg is suspended from ih0 lxe,-cr o jy7 jc54kg+knt:n;umz7t?

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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 allmblnj1apg f/y* 6 j*lf;1j+ 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. lf*6lj1p/l *+1a; bmg lnjfyj 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 aloi)k1fv; wmmh8min:i ;bha1 g(8n b1ho ng a horizontal, frictionless surface. The spring is i);whv ng ak8:(imob hb1mh1i;nf18minitially 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 constant 60 N/m alonzam ht fy;l594g 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 frequencm;a hty5l z9f4y 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 undeb. p9*:cx(fwy7tiasx: ;bo forgoes SHM. It goes through 10 complete oscillations in 5.0 s. What is the periopfw:;.ysc x x97 aio*b(tof:bd?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring of spring co623ooef l:+ke.g u wqtnstant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibratingeetq2o 6+w:o3gulfk . 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 -e+geyov2hz eb/abk.r p) 8y7 20 N/m along a horizontal, frictionless surface. The object oscillates ey/2oeb z-v+prk)7g y bah.8ein 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 ampli*oo(7w/ zfikstude of 4 cm. The energy is 8.0 J at this time. The mass is cut in halo*fkos7( w iz/f, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constanskv+rba29 5y*du h3 sg h4kva7t 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 amplitude o5suykv h rkhaa42gs 7+v93d*bf 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 sprinslk7 ;i38ce o6ww j2 o(zp 8urunj/e2pa2ioa.g 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 theel2woo8ar8a3.j7 ujiskc u o2ez2n 6w(pp;/i 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 constant hxm wu to/u: dqg-3gz+.pa,y-50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mecho+g-.:,mup zwd3 -yhtxg qua/anical 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 te(fsf 6 ckyr+:he 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 mechanical energy of this syst sr+ek:cfy f6(em?

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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 fros a-+mioixx6 2m tu(8im the free end 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 thix-a+ ot8xmmsi i(62 uis 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 ddy/ rne+v :v5displaced 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 evv/dy5d:n+r 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. The objeffp lv.efs234ct is disp .42f vpfsl3felaced 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;am1:wfzy c 9kb;e1 yj spring constant 10 N/m. The object is displacc1jkyfb:w 9zy;a; em1ed 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/sy e6l9 fm2jix2+k8 rum, displaced slightly from its equiliru86 i+k2lms2f j9xye brium 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 oscx c,nlwv -w4vpr n-2 1bz,1gleillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the ma vz,xw4l,gn-e n vwl-2p1r1bcss?

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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 ff0cc4kuk) t-. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with -k0 c4ft u)fkcamplitude 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 equilibrium the dh0;e h wj1e4nmass 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 th0eend;j4w1h h e 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 th4fi z.od b ub :/w,dl,b(zq9zge mass stretches the spring 2.0 cm downward. The mass is the/diw(bz.9 4,bbz,lzdf g:uo q n pulled an additional distance of 1.0 cm down and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mass stretchedupv7 d i.xcqez(., .f.on 2 sxgb*3mbs the spring 2.0 cm downward. The mass is then pulled an additional distance .vd7fqzmc xb2 ,i dpunb3s.x*.(g.eoof 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 harmonic m* t-askisq,i 6//zxcyotion obeys the following position versus time equationa/ ,yq ik/cxss*-t6iz:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motionwfzidu19x., qc j;3ix obeys the following position versus time equacx;idj9z,x i3qu1 fw .tion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmz-r+ ybxv. uavs *ubs)eb:o+x07vu, f onic motion obeys the following position versus time equation:b.y f )sx:vrbe*u+soa 7+b v0z-uvx, u
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 /tar o4dm4.p b; fht1lxqiv k)4mu;8kharmonic motion accom14 k4al t8) ;umxri4q. bvot/;hkpdfrding 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 attachk/ja3tjb9*2 eg crq rmx w20b)ed to spring with a force constant of 20.0 N/m oscillates on a horizontal, frirbeb j23x w02)q cjrgt/k9*amctionless 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 complrsx+(an (l w exj24gs)ete swings in 8.0 s. (a) What are its frequency and period nwslxa(2) sg(xe +4jr 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 is43m a v )daedq,rabkrg- )w8;v;un)gq 28.84 m long. 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 gn+ pvw4o8g 3 ydtb8w1p6xv6zEarth. 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 gr o+0 d loff:g9w)-lduqandfather clock is 1.0 m long. What is its period on the Earth?uo d :l+dq09 fg)fow-l

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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 long. What 5c r;7jhpf nh,5qja*iis its period on the Moon where the acceleration due to grav5a5;pji7,nh hqjcr * fity 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 sy x--j6ybc3 hntring. When the mass is displaced slightly from its equilibrium position and releas6- -jxb3y yhnced, 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 2n0, dw3(tks/s r; udom8j 6 brfj.fld-0-g mass has initial angular displacement of 8.0emunflr8/3b6srwt, j j-ddk; f( os.0d. It oscillates 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 give59 oab6ul;2j3ma mfdl n time. The frequency of the wave is 120 526b9d ufm mal;a3ojl 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. The frequency of the wav 6 dknkv(v8wl.i:u aqo.(k0bme is 120 Hz. What is the wavelength?mink. qv:(d (.uvawklo0 68bk


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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 fuxlq xll9k.is**sp:4requency of the wave is 120 Hz. What is the wave speull l:9* pi*s4k qx.xsed?


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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 ofzsbh 5y)+-lfirz;)yjs a4ps 3 6.00 ms?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the period of a wave with a frequency of 15ne4jzzy:/7x 2w, vo oj00 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 le8 2xgg)zo0za wave has a frequency of 12 Hz and a wavelength of 3. gz)zgo l28ex00 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 velocitykh1 v :zsl )rtimnk+2hpfrtq/24e97f of a wave that has a wavelength of 3.0 m and a frequency of 122rk rf1ni/:7+teql49z s) hmh2 ft kvp 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 trb u *mzl0b; bmjg0/ju)aveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/m is under a tension o ah1t ,0e-uzao+ ncq-fj8ym5af 1350 N. What is t-hjuy1 m58te q-o z+c af,an0ahe 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 densityk3haac(tgl wgs *4(3 hd55 b+2j 0dvivcndta7 6.0 g/m is under a tension of 180 N. What is the velocity h3c a(stvc5b70w2+vgdd td4*gakln 53 ih(ja 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 ta1*z:m-jk:w gbnrq5; 6dvcz g;ukga4 raveling down a 500 m long wire whose total masv ga; :q*g6r: zu;5bdw4 zcg1jka mkn-s 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 transversew ,m yye+tob*q1de7q 8-*aofi wave on a 2.0-m long string fixed at both ends is 200 m/s. ,8-yo w*1fy+i oqbe*qd t7mae Which one of the following is not a resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a fundamental frequencr+zv7sa 0vq n9b djl *lf.8r.n 4nli8xy of 500 Hz, which one of the following fredlnlr7 ba. v9 xnn f 4.sqv*0jl8r+z8iquencies can 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 sta* l:/a)fmwpy pnx ,8+cal i/qpnding wave driven at a frequency of 480 Hz. What driving frequency wil*/ n:/p) i,8wlpxfc+mqaplya l 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 js,sx(2 fr+mn at a 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 4s m ,s2r(jxf+n 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 o sonr-:rv2ko6e5ael s:jv8q jr1zk 4,f 20 N. What should its length be if its fundamental reson2 :e-lr a1: 4q5erk8ojsv j6ks,rznovance 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 2.00 g/md 8xm8,6ih svaab5v6f and length 0h6advbs 58i,amx6v8f.600 m 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 but 4r*oww: ey*p( 6ed,x diw5fdp+r 1string vibrates at a frex61 udepwyp e,i*rt(fw d+ r*:54bwd oquency of 85 Hz, a standing wave with five loops is formed.
(a) Determine the distance between two adjacent nodes.
(b) Determine the wavelength of the waves that travel on the string.
(c) Determine the velocity of waves.
(d) Determine the fundamental frequency of this string.
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