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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 called t+dbcaziyv15;, (n f ,soq.no;/nj*zysv8ymihe

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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 thmm-ewe4kn r p*4apvh(f 9x1o7e

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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 porbnys mq56k. .int is crs6. .nyb5qkm alled 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 undergoes SHM. When the mass is at its maximum displaceme)ezq9v( r-0o aub v4apnt from equilibriu9ve orba0(-qz pvu4) am, its instantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass passes through the e)9(pyhhp/w4ns.u)ysp aj ha:quilibrium position, its instantaneous .jn) haph 4ya)sw(u:9sphy/ p 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 jhoaf psfsxwp sg)s. +5o;.*q6k)h : sSHM. When the mass is at maximum displacement from equilibrium, its instanwss 5sg.ssh6:.p*+)qop )j axfk; o fhtaneous 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 et2 p0pw 9ll+lvertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is lp tlp2w0+9el 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 vj6ezn8vl(l:+cfdo4 sertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a mjlz8dc4eovl+ s f 6(n:aximum?

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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 betweensauuk7; bl ce7:kw3 3us cm)7m points A and B. Where is the mass located when its potential en33m )u:uass 7mkl 7k7b;cwu ceergy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down between pointo.)qyapb rcy3)2x)v(k2t /wo *pk o,kdc+ m gns A and B. Where is the mass located when )/ p*2)2ryo 3ka( gb)cd komn tqxyvwo, c.p+kits 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 vibratingk.jmiigv7h/e) m5nx/z;1s miwf5ev 1 mass-and-spring system produces what effect on the systezm.)s5 15 ;en h 7eviiw/mjvi/ fk1xmgm'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 vibrating mass-and-spring iph:qc9 70cid+rgoqc.ob6f2 system produces what effect on the system's mechanica7+.62rccg9qio 0 h cdfqp:bo il 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 k.+ -w::z*)co 5bzjik n 4:c mkxtlxuymass-and-spring system produces what effect on the system's mel -m :xntw: oki zb.+ukz*kjcy: x)c54chanical 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 a0 1l/xp*r smd wh -7culzq24npnd on the Moon. Where is /7s40nmp-pl* d uczxwqh r l21the 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 *qcso.mx.35 fdnvb e+what kind of change in the resonant frequency of the system? (Assume no change in the d.fqnm +xsvob5*.e3 c 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 m0 kaoa+m 2w/inass-and-spring system causes what kind of change in the resonant frequenc2 o0kw/nia+ amy 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 am fk8n7dd.* 20kio;wx5u8 ly r kr+02ghn nasx mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assu.ykdun* 07nsrxdamr 0o8i w hn5lkx +f8k ;2g2me 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 wjpxumqs3 8rnylz35c+flv + z:*;: vgfeightless string of length L. For this system, when jplnvl;m5: fv*sc 3 y+x8g+uzrq: fz 3undergoing 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 om1v 3gc7 w t4deg7i5qedlwy2:ne completeg57lw1id4cgty :qe32wv e7m d 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 lon a+df2o1snw37 uo3mg: 2e bwzl* nmui6g. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the pe7wm duf3zulina 2o:n web61o3 g2+sm*riod 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, the time for one complete vi r9u, 5wyiohj-bration increases by rohui9j,5w -ya 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 siew l1ty9t -g2wu(c7pix8p )p bmple pendulum's frequency if both its length and mass are increaw9ttp ) -x8i7g b plu2(ecpwy1sed?

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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 penu)x7afluj xunr*+ 9/xdulum B. Which statement is 7au)jx/x fu+x 9 *rlnucorrect?

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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,pq;*m7yhll1f m56q9 9;xv jtyx m+ vl8 ixr8jn where the acceleration of gravity is less th qjt ;69r 1m58*q+l7mphvly9mxfl8 jn ix ;xyvan on Earth, 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 represe4 fm ifx+y4p4afmpih,cbk a5i:,,ep:1i h( hints


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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 repre82hmji)st9ppp(m) 9 yx,tsdm p pf/,vz*s7 nbsents


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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 represent -;,;ncyzqken s


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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, thdg2 o1dybsco r5eir(tvoe 04jg3a9 ,1e amplitude of 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 equili3qfb:i (c9 tcubrium is called the wav( ctu3fiqcb9 :e'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 crests on a wave is calle z c+n 9nur:bsse+2qy *sx:5pid 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 unit time is ss s62ok)oc4 u0*5 kltjckv*ie;i u(ncalled the wave's)s 0ov cuti;c(kso*2knu 4j e6ksli5*

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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 is the wa2m6lbsjcur3)s f3a4+8me 6 l khxo1 qdve'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 d**v8 fl ftsf2b-e,p vcistance between successive crests if-82ff ,spltv*bcef* v the speed remains constant?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a strk* xe:r,o486as- m3( b ai/jaergwf-e+ zecxt ing with wavelength l and frequency f. A second wave on the same string ha ik48we-*cx/aaxm e, a + -j gszt(:eref63rbos wavelength 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 string of length L, mass M, and teug9w;;gt8o iu nsion T. A standing wave is set up. Which of the fo ;gugwit;9o8u llowing 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 a waeggq6 6q,awa2 ve in the string is v. What will aw6e g6qgq,a2be the speed of a wave in the string if 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 a wavgfoj/su g;;v g9y1wv)e in the string is v. What will be the speed of a wave in the string if the length gyv9wu gjo1/;f );vsg 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 ps/o5xsb+i 8ka t(v:xL is under tension T. The speed of a wave in the string is v. What will besvk: p/+s 8x5 baixo(t the speed of a wave in the 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 i7a rhh zao6pzdr2:;lck; u1-vs a transverse wave. As an S wave travels through the Earth, thod;: phh1 vl6uaz k a2-crz;7re relative motion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longituu8lk*q awdh;kg6fuqt6 ) *sndl /tj(,dinal wave. As a P wave travels through the Earth, q,t* sah)8ltkqjf*k;/ngul6w 6(d udthe relative motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wave bjy6vhs5rp*, 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 along0mrp 0k 3;ms q9 at*sjj:ijou4 a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmtj kjq*43uaoj spi:m 9rsm 0;0itted 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 amplitq ,2m v,iot9fs1akeazx+mb/, udes pass each other on a string, one is traveling toward the right and the other toward the left. At tbse ,f+9 a ix2,k,m1vt/qaomzhe 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 ou v+0ty9l/g*msk 8 zsine traveling toward the right has a positive amplitude, while the one traveling toward the left has vuti/ gsm9*y 0kl8s+zan 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, occvh6ud w)pmz3,ofu0a 2urs 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 strin a j+f-n6afx7inlydkxt 6 *6e /eag;k)g, the fundamental frequency of that string will increase bxf/6k-nd lx n f;y7j a aegi)*ea6+k6ty 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 2.00qirsm ,2b(8j en.b2 bm cm when a mass of 0.600 kg is e.rbb,(m2bnm2qs j8 isuspended 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 zl3yv3bhnmds .bmoz*1, xt.+mt(k e 3t4+d at spring 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 maa1.k,byts+.33vemthm3( xldnz ztt 4*dm+o b ss and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the amplitude?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 6xw :ds(-bo:z+fmq + iv0 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass anddx+:zqvm f+ (owi:-sb 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 sprinkleh50h :q/sag - yc6- mkhn82tue1wc g constant 60 N/m along a horizontal, frictionless surc:a6n em20/ qh kyhskc-wgl185 h-teuface. 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 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 thrh4pg sd4e 1.wrough 10 complete oscillations in 5.0 s. What is the4sde4g.r hpw1 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 forth from the free end of an ideal spring o-4 ;jm9rihh 3;vn ))h1lzs lmn ,kcncaf spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass wh4nmzlcc- v1na9 sknh ,l3him; ;r)jh) en 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 im*w 0-nltktp7 /qk26yi ei;d to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simpmp- y2ne6i wqli/* tik07 ;kdtle 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 amplitree73nmgk:q t+- 3ez;obo mk 6ude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motionkeb;+e-rzmn o63 q:t7eg m3 ko 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 sprk)vp-awcz -;+, z4 wicwspu0g ing constant 20 N/m along a horizontalwuwav)z; sp+zi,g- c0wp-4 kc, 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 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 horizon+ xfne 8 1nv19ep)c1 qam;hlictal, frictionless suv 1clfxcnmp ;8i) ae+ 1hqn9e1rface. 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 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 attachg t*ni,cxcaw 47k-b0 ded to the 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 mech0x-t* 7gbnw 4c,icdakanical 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 o0h tfwiqv 6hl-b *y9x9f spring constant 50 N/m and set into simple harmonic motio-9*i9w lhbq f0xt6hvy n 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 ideal spring of spring cr+igmyz6c)ze5 ad 2 a(onstant 20.0 N/m with an amplitude62 ec5( )gr mdy+ziaza of 0.250 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-sprjc ;f h7kr7qkkii m,ku(9 ,jw:ing system 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 only:j ,m r f9(kcjw;,qkkiku 7i7h 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 consm*6m)zzm2 gwo oyf72k ygq9v/tant 10 N/m. The object is dg2zmk 72 om/v yqowg)z6*fy9misplaced 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/ moey0)san u57m. The object is dissn7uom0a5y e )placed 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 m;dpu zy l*7g;xw3j6xj3kdw8x*2 fkkspring constant 18 N/m, displaced slightly from its equilibrium position, anu27*w;8fw djk3pz xkdjyxx 6 glm 3*;kd 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 of 1i ik)m6z9iwkr gfw;j b )/l;o4.27 Hz when displaced a distance of 2.0 cm from equilibm wiw )/g;i4zrijlbkfo;9 k6 )rium and released. What is the maximum velocity attained by the mass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, are attachdg :ylqd2qqc4w,r6, ged to different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrate2qy c:lw,gq4dgr6,qds 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 equilibrium tvzv t8a85.hi -y cbrw6o 2rvt*he mass stretches the spring 2.0 cm downward. The mass is then pulled an hrz. *v88t5yrvib-ct 6ao 2v wadditional distance of 1.0 cm down and released from rest. Calculate the period of oscillation.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mass stre6y5fha;n .o /bhq+1vhgy3 zpk tches the spring 2.0 cm downward. The mass is then pulled an additional ;6h3ybf y.gv1 zq+/koh naph5distance 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 stretches the 9 uhi/astj/tcfp2 ob: s;q,v;spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write di/jh; , ubo tfasvqts9:; /c2pown 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 position versov knx wuit1jy.+:*l )us time equa*nt:+kyw 1lijv )xu. otion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motip -jh,or-0 bogon obeys the following position versus time equaj ,ohp0-o-rgb 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 harmonic motion obeys the following position versus time equ6i. 8dx 6k1ss7cr yvl9 wgt2nfation:gtds.r 6s2 ix97l wvnc681kyf
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 en aiff1q27c, yrx x/bvuvb; 6;ad of a spring executes simple harmonic motion according to th1b iq fr v6x;a/ba7v,;fuyxc2e 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 Nhnv o gd4u89*e(0z0 ugif fzta 6vd-h)/m oscillates on a horizon v(- ntdudzv6i e 09zah)f8gofug 0h*4tal, 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 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 comp -p95gss9g 3ccqjh thqbn4i gd,e(;*qlete swings in 8.0 s. (a) What are its frequency and period on Earthi9 g-hc ,h pg(4b gjetq;qcd395qs*ns?

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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 isapw sn*ocy:d9*1, fj7v*;haj kc s l6d 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 perictuh16fcpdnwd n/90 *od of 2.0 s on 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 clock is 1.0 m long. Whgn(3 yygj;k +fpd.4kq at is its period on the Earth?kgk;jp y . dn+ygq4(f3

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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 ij p1p dljk+ -h4er/9oks 1.0 m long. What is its period on the Moon where the acceleration due to gravity ih /d kppe-941jok+lrj s 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./ka+1c49an1d a p urlcd 25ov8gmah8p25-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth wi18ko8/pa ad gh2alu9 nv+p 5a4md r1ccth 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 displacement 8g ;bqxydz8kpmjjn1mj1; y73 of 8.0e. It oscillates with a period of 3.;g81kyj m3 dpyj17 m;n bxjqz800 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 g;w) ek3/ np sg8halac:e5 hod+iven time. The frequency of the wave is 120 Hz.n;8a )a3 h5cogwed pl/:shk+ e 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 obv xw;b1w5 j/w fj,0yaf the wave is 120 Hz. 1b; w5jxw v,w0jyab/fWhat 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 ynfd0v)92m.z kf epfnq6 4aj6e at a given time. The frequency of the wave is 120 Hz. W)yefj qnv9 dp.6k zfnm42af60hat 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 vyt)q1hgcq5i t br ,:4+pg+dnof 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 iic 1y,7 pmf2ba wave with a frequency of 1500 Hz?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wave speed if a )aj0dsu z;+bmwave has a frequency of 12 Hz and a wavelength of 3.0 m;da+)0mu bz sj?

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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 )(gq*,ovm kds -w,q rnu.s6(m/oyb o ya wavelength of 3.0 m and a frequency of 12 Hgo),n ovu(6s/b. -( dkr,so ym*qwymqz?

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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/svsana, 0:8+emt: tmzz?

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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 densitl/w boczh 6q zy:h:(s. u:pycps/r.r9y 0.0050 kg/m is under a tension of 1350 N. What is the wa c hyc zs.hy bu:qrz9w.sr6/o/ppl:(:ve 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 unde;+n vp96qzk)mwe9 fy+g3x ms xr a tension of 180 N. What is the velocity of propagation of trans gvn3eq+xzx+96y 9 k;fsmwpm)verse 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 wavelengtj u3d5yg q)dtk0s /h4kh is 0.500 m is traveling down a 500 m long wire whose total mass igk/q dju)t3sy h0 4dk5s
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 wave9n)w uf:fs lasc)h hb5gs+vc 17qc5/ w on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is nogshq s) b)ch5fc fnc:wu15 lv+w7/as9t 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 fry .mitw2o,gxdrb c1r +v)3q j7equency of 500 Hz, which one of the following fre.trq3b7jmviw 1y+x 2o), rd cgquencies 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 equv,80 0ad5jl+lte rm0gxvr x/ hal segments in a standing wave driven at a d 5rrv l mav8/ hx0+ge,l0jtx0frequency of 480 Hz. What driving frequency will set up a standing wave with five equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrates at a frequency of 12 Hz jp6j z vcqxv,upn5+*08wn d6ewith a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to ccpen *du0+8,zjpw5x jq6 6vnvontain 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 ok yxh)h. ,h:rcf 20 N. What should its length be if its fundamental resonance frrxhh ),:kych .equency 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 ejn: .psb*t t,dnn 4m-harmonics of a string of linear mass density 2.00 g/m and length 0.600 mt,ts 4nj- e.ndpnb 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 strvi /j3m:0u xgwing vibrates at a frequency of 85 Hz, a stai 3:m uw0jgx/vnding 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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