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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 hyq:8ovdyy/ -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 call w-. y7es:nlnk;zg 7yued 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 displacemen 24z4a ej p4iky)lrk/5cfm ac7e+ula0t from the equilibrium point is cai44u)+ /mcayc54peekrl lfa2 kzaj 0 7lled 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 u* ro( gqibi.hn9i)q .n4uv5ihndergoes SHM. When the mass is at its maximum displacement from equilibrium, its instantaneous velocitonb h 4q. 9qih n*i5gr.i)ivu(y

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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.vw jkl* .,2yld When the mass passes through the equilibrium position, its instantaneous velojlkv ,wl2yd *.city

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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 mz5rdeg-sgi kd.4 9+ 2pbc3xx from zbe9pcr+235idxkm d.g sgx - 4equilibrium, 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 and bobs up ak6m fco213i) emd8btand down between points A and B. 6m3 1tab ei8md)kfc2 o Where 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 lh+28vwelz5 d vertical spring and bobs up and down between points A and B. Where is the mas+2he8lz5dwl vs located 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 sprin1t8 ;csur f1 9 cylxr8t;mfc0pg and bobs up and down between points A and B. Where is the mass located when its potentialfr 18ccscl mt0y8; tx9r 1;ufp 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 bozh, 6 mne+ndy6z2y nc7bs up and down between points A and B. Where is the masn 7+d6e6yc2n ym hn,zzs 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 amplitu:nh;gga(jp-v )d v8kvde of a vibrating mass-and-spring system produces what effect on the s gvjgvvak-: 8)hn; d(pystem'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 gdkmw/7f.ik 0,gig 9e vibrating mass-and-spring system produces what effect on the system's m9kiif ,egggk.wd/7 0m echanical 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 springs5z*7 vm e2 fqkmojj(/ p6(soj constant of a vibrating mass-and-spring system produces what effect oj/j7(fovksmes2 qz5m 6jo( *p n 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, both on Earth and on the Moon. Wherepkc)n+*v pd 8w is the period the gr*+vkp)ndp c8 weatest?

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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-yk xox9n; sj+7and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the systejy xk n7o;s+9xm's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-and-spring system cause/olyjw+ a 5*xt6p5 ages what kind of change in the resongxa56wpte5l / +o aj*yant frequency 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 wams5p4(2bfc.z o/oh iq0n5uof a mass-and-spring system causes what kind of change in the resonant fre5uq(z0 hc sip5 .ofm on2/a4wbquency 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 consiayey*nzi4a iszu+ nk/;,d6w 1sts of a mass M attached to a weightless string of length L. For this systa is,u n y*e/n1a4wz;ky+i 6zdem, 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 tid8/p- vt .mqh hraib.;me required for one complete vibrati aq /v-h8.b.dmrt;hpion

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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 0zcl ,klp2h.gT. Pendulum A is twice as heavy as pch,z 0p.llkg 2endulum B. What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pendulum is tripled, tg0oseq 4fzwyz84 pgk,, el*m3 he time for one complete vibration i z4wek qg83o ,* lse4mfzp,0ygncreases 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 pekimuq m: tfa*a 8a.v7.gqikjcd-j7n sdy.-6/ndulum's frequency if both its length and mass are incre./ yd7-c-7a*s8 qkjqm.kg au6:inivjda .mftased?

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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 o i 0asj v,m y:83avlja2ku km1s+( 4s(pse.flof simple pendulum B. Which statemyf .a (k4vo10mk,:( 2ljasjv38sepi slsam+ uent 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 t 0rnd ;b+(zmnohe acceleration of gravity is less than on Earth, the resonarmn0d( +zb; nont 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 represents vxfvl w 27d(lc +:5btz


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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 rep t7lghr k,;s(,t joy)gresents


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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 nft834xt4 mqp2j/nb b w 4p-hurepresents


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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 found to depend on;c ib -r6lb:hz 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 equi598dqus1b * ,gowzt3owom8xdlibrium is called th b3sod om,uqw98wo*1 xg5zt8de 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;jrfdk(sy( v0 mtb+)ii* jy 6l 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 a point per d2vvhk(s8 -ohunit time is called the wave's(osh8 -dhvv2 k

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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 frequencyvm g51kju4 lt3 times the 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 happens to the h: (0 mu1 1ftjuhnz9rbdistance between successive crests if th: 1nf1tuu 9 hbj0(rzmhe 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 2 o;u9ov.e6vwdm g3cjon the same string has wavelength 2l and travelsv .e9 d 6jvwcom;3ogu2 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 string of length L, mass zg8hwpu k-r6n )d,4nxM, and tension T. A standing wave is set up. Whrz8wu4 -nkhxg) ,pd6nich 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. yzftc -: 9anu2 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 increased to 2m, w:nca ufy- 29tzith 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 tensi,dr-b-)y.vp vfzhh-uon T. The speed of 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, withp .h -v-d-fbvu,)zyhr 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 ot59,.znd jmso f a wave in the string is v. What will be the speed of a wave in t zmo9 nsj5.t,dhe string 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 wave is a transverse wave. As an S wave trav7k0nkijnwbg. t5 y.q8els through the Earth, the relative motion between the S wave and the ki8qw7n0gy .k jb5 .ntparticles 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 wayh8 h x;o0g+jb) o kw-p je+tn.p;fc*mve. As a P wave travels through the Earth, the relati pt-w; nj*)+8 +pkgeochh ymox;0 bfj.ve motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wa-2lti6hu6 8*a j rm32fs3.iuqnzxa qeve 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 ag92 i 3mnu17 ejf -.r5girexeh2tnqw7 discontinuity where the rope becomes thicker and h rgr2hnj n u2 t.i-7e9x 3m7ie5wfe1qgeavier. What is the orientation of the reflected and transmitted 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 tj zxh 85.zlt,amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same region of space at the s,zhxlj5 t8z .tame 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 travelingwolah+,d4u )hht s x:+ toward the right has a positive amplitude, while the one traveling toward the o+hu4dh th xs:,al )w+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 asiqun w uvg)ij/ x0hpo1wz, ;-4 a string fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin s7e-y4;3 4djvyuyzuagwza) zbu880o o tring, the fundamental frequency of that string will incva y-a)e b7uy owu44uoyz80zgzj; 3d8 rease 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 constanu (mtoti9:xw. t of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended from 9twmiu:.(otx 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 oqp:av1zl (z +p :s1nqvo w-.oalong a horizontal, frictionless surfa. nw +vpql a1-o(pz:zvqs :1ooce. 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 con ivnrqa)( (tm9stant 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 ta itma)nq( rv(9kes 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 60um8(qj.r(jfv 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 b8vj(.r f q(jmuack 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 goes thr ql 52k(vq9qes 4czd,zough 10 complete oscillations in 5.0 s. (49sq z,cqzvk5 el q2dWhat 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 gcqif + b9om)*and forth 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 vibrating mass when it is 0.30 b qm+g9*f )icom 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 N/m along a horizoasibrg*/e wehgd 6e102nlc 1q 6a7z1kntal, frictionless surface. The object oscillates in simple harmonic ma02 n6clgw kq 1adrie6ze/ bsg*7 e11hotion 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 ene+eu n z)f rzfiz6n+mtv*f3f+ ,rgy 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 is the ene +znt)*vmrzff f6i e+f, n+zu3rgy 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 constant 20k3,ll/ ut ps8i 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 plpltu83 si/k ,osition. 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 20xy6u ks5oz g1iy) 39jr 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 w )j1ugzoy 5r3s6yixk9 hat location 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 tobwq:k0yd 9zo p,w,nm( the end of a horizontal spring of spring constant 50 N/m and set 09( w,z,dm:knyqo pwb into simple harmonic 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 sp 3m2jh6it- f42bdvz hlring of spring constant 50 N/m and set into simple harmonicflzv4j22h t3- i mb6dh 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 an iddv39xb)e -r lm+u zo wodr-:j7eal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. Whatx e-bvr m9udzo:lo) jr -73+wd 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 sys(,76si*u nl 2pe 2d:,mxywln hprmv: xtem is displaced 10 cm from its equilibrium posimw(7:udpse,*i xvxn lrphy ,6mnl:22tion and released. 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 spri2.v* ibj: q:prta0gsf*blva- ng of spring constant 10 N/m. The object is displaced *ipt - sr:ajf2*ab.vv :gq0lb 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 sgny5u.ng-wnj /d 4 t6apring constant 10 N/m. The object is displ/ ntnn6dg yu w4-gaj5.aced 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 constan8ofg0/jze ;mq t 18 N/m, displaced slightly from its eqz; /0q jmego8fuilibrium 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)kg8ape /;4n lxllne. 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 maximum velocity attaelnelp84l /a)n.; gxk ined 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 sprin a578hrw1 (ttbw0 0mqrv3x;r8mipnhx,, rkn hgs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of Ap08rm8ni3,qah(mw b,5 tx0 7w k 1v;rt hrxnrh 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 equilibriu- tuwlofar.q:,. vg0xm the mass stretches the spri rwu0faq:o-,vt x.g.l ng 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 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 suspen r k/+/qy4myu2 ir6jznab 9vl,ded on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the total energy of th m,u2ivkj46q9/ + r/nyaybzrle 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 suc7gj*cg+.7 3xextnx9gk tn h69k 7ydj spended on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its eque*jnkknj6gggxd 9h+3.7cxtcx9 t 7y7ation 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 followinexx j*gj )ssx4kx -t-)g position versus time equatix x g)es jxxsjt-)4k-*on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 1p2 6wv;j oh4y c2xgkcharmonic motion obeys the following position versus time equ p2;46vy 1ckwh xjo2cgation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 h(a khm z+met59armonic motion obeys the following position versus time equat+(m m9tkezha 5ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 hai19bfi-p: egc:tvqb1 +s2tf wrmonic motion according to iwiq- e cfv:: btfsp2+1bt9g1 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 on co7ml3h a3u2l a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 hc lo32mu7a3lcm.)
(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 de 6x8tz(i5ffi;uae**s,g l8e e65 lau glgl1complete swings in 8.0 s. (a) What are its frequency and perilg* tlul1s5gf(ixie ued8zlaf *,658e eag6 ;od 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. W0-xh)hum spehmb( .er-ifyul:o1 4t 7hat 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 Earth4p.k(1o .4j oy 9wk.zzrrcyzd+w2 qq h. 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 grandfathee g f(kq66lk4pr clock is 1.0 m long. What is its period on the Ea(ek lf66kpgq4 rth?

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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 c+clt-on h2c wf,s9-zis its period on the Moon where the acceleration due to gczfsc+,twhl2o - c9 -nravity 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 attx y ,uvpy0iwx2 f* )vhd-w6;zpached 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 spherevwyx,iyh 6*2)uv0p; -xdp w fz) 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 ha f)3z;ui mornrz20am -s initial angular displacement of 8.0e. It oscillates with a period of 3.am )30zf2i-rn ;z rmou00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The freqlbs6 3 w6(tsiyuency of the wave is 120 Hz. Whatsb it6ly(s6w 3 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 wawxfh j1o9*ks +e:mb*ns.tz f ,ve is 120 Hz. Whatmh1je xfw+ s*t,k9sz . nfb:*o 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 wav+b8 2uuovxj 6y0r i+nge at a given time. The frequency of the waven0yi +x+ vj2rob6gu u8 is 120 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 frequencyfc* khto-9py/xnh/ cu3vafa22nk 6 h; of 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 fpqd1ae6v* e6w requency 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 spea)u4e3f3a lvq .so ;6gkefsp 4ed if a wave has a frequency of 12 Hz and a wavelength of 3.0 m?3ov lu 6q3sk)g.feaf;4s a pe4

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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.rk:mw.j8s- a+k9a wkv0 m and a frequency of 1 s w k.9rva8kmk+:-awj2 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 ma)a;.uymky*p wn8gh 8 wave traveling 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 tensiokl-v 3 f0has-p,c :imun of 1350 N. uc k3:m0ivsa,l h-pf - What is the wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is u o3ek+x)f r 6hrpbo0*wnder a tension of 180 N. What is the velocity of propagatihk r f30po)6e owx*b+ron 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 ce m)5v;bt+2zk* q0q gqxbyi;down a 500 m long wire whose totatbqq+yek)zi; 5 v*x 0mbg ;2cql mass 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 a 2.0-r)i4:44gsm8 s ibrtkgiqu0an 6 e:e7pm long string fixed at both ends is 200 m/s. Whis qe7srk au: 44 bit4e)p6g:mg08inrich 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 frequency of 500 Hz, which one of the follo mbb4-5s e;,ruev2ead wing frequencies can set the string into reson4 2,sverb me d;be-5auant 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 fo m /gu *.rcndcyg jfj*g9kb6)q5;d*sm ur equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standi;q695* dsn.)jyjfk cmcdgrm *g g/*ubng 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 wi a9l:(cwxxlnng8hr655. ukexth a standing transverse wave pattern conaxl.9nh:lw65(u 5x g xke8ncrtaining 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 1.5eimp9ein6 lzo83 nd 4h7xy-og4xy/i9 g/m is under a tension of 20 N. What should its lengthze o9/l-9mx e3i gxn y6 inpo4yh8i7d4 be if its fundamental resonance frequency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string of linear mas2yuzmin 4mc4r r*/h5hs density 2.00 g/m and length 0.600 m when it is subjr2*m4n yi ur45/mz chhected 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 string vibrad64o3n zsr*gc tes at a frequency n6 rgoz*sd34 cof 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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