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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 is7d7wenh bz-x3l+k.i m 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 c t) b+rm-xxg 2th4u9x/kcde. xycles 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 dis;8v c;)ypo6oelo vq,p placement from the equilibrium point is call yqplv; ,e6v8)ocp ;ooed 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 it:qqh ( 5l kf-cb.0umits maximum displacement from equilibrium, its instantaneous k m 5i-qq :0ublt.h(cfvelocity

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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 efd qp0-pdj3/ qj 0or7qbv9zx 7quilibrium position, its inr9- qo j3zjvpxdd077 q0pfb q/stantaneous 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 displacew/4+):g6y hsr k chpyhe //tlzment from equilibrium, its/+w:thz/ 6epycgkhs4 /yl h r) 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 and down betweerf m6bjiil,et(td c2si4 .ae(viq)3.m/w vf6 n points A and B. Where is the mass located when its kinet fiv(m scije,2lv3qb /tdef r.6a )mtw(64ii.ic 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 2l 9zcdc1 chp1and down between points A and B. Where is the mass located when its 1h ccc291lzdp 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 a nf)pgzc: b8artq bhf u8w)97:nd down between points A and B. Wbz: g9 tfpw)8ru7a):8cb hnfqhere is 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 vevewro ek:-;4uy e-g-5v) rhuo(-q aedrtical spring and bobs up and down between points A and B. Where is the mass located when its poqv-kw--e; ae- oyg4uher5oue (rd:v )tential 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 vibrating mass-and-spring system produi5f h+ zy;lt1nces what effect on the system nzt15ilhyf +;'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-ando.s+xy ,;fu zk 56qkchkmzp+4-spring system produces what effect on the system's mechanical enskm ; kqkcu46z+f zy5p+x .oh,ergy?

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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 prod5eoeu,)jttm+vttkg v5i813 kuces what effect on the system's mechanical ene5u)t etg+viv18 e,ktj t 35kmorgy?

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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 eb spsd)o -5u:dnd of a spring, both on Earth and on the Moon. Where is th sso pu:-5dbd)e 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-os j-6l9fhp;ryp 5do;t)*btdand-spring system causes what kind of change in the resonant frequency of the system? (Assume no chan o9 h*s;lftr )ptp6 bo;y-jd5dge 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-spxay *ubj.m e* lj;s5o:ring system causes what kind of change in the resonant frequency of slub *.omy 5a:e;j *xjthe 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 amplitudefjhf4w z)p/u4 of a mass-and-spring system causes what kind of change in th/huw44 ) fjzfpe resonant frequency of the system? (Assume no other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a mass M attached to a weightless string of l/f.di otij l7i ic);0vength L. For this system, when undergoing small oscillations./)f0 l id vj7oiict;i

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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 requi:1b* i)bas* 8x lgdnvgred for one complete vibragi *bgv1n:b8* ) adxlstion

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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 iat2o1 bg/*mzc n5;ykm s-kr8ks T. Pendulum A is twice as heavy as p/-k *m8;t b1m n kgr2osczy5akendulum 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 si8*pr d)kkf; l1 zykvmhx9sq,) mple pendulum is tripled, the time for one complete vibration incr,1)qdfl)8rkvkk *x ;p9ms yhzeases 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 simpleudjjs60wu x)5k15h- xmzic.t pendulum's frequency if both its length and mass are increased?wu1 .s6cmduh5i0ztxjjk 5)x-

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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 frequencymi/o ryd+2d (m of simple pendulum B. Which state2d/( myomidr+ ment 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 bb v /7i10kdvjqhp /4sthe acceleration of gravity is less than on Earth, the res4ksvq p/hibjb/d 7v0 1onant 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 re(49 iauav uug;presents


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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 repr3i:t* b5ko -fu *wd:cslz plvg13nup4esents


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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 repr/ v)0xbgg5 k)cz86xrlkc 6gh)htz w,fesents


本题所包含的其它图片:

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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 depenp.;p3* qgg yhg1r+o h5b tk*xbd 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 y1u h8+ aw+jdf 8mykb .ic(2oldisplacement of points of the wave from equilibrium is calow28c1uj8 iy +lad+f hm b.(ykled the 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 crests on a wave is called the wouje 0trk qh8:cb gjr,2y2r/ 3e huv,*ave'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 called the wafg+z 2qx enx+7ve'+ xx2fg7zq n+es

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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 thmlx gxozgq23 8e5.3 -q axsts7v+d5pse 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. Wq3q-b;e4)7jx yztkwu hat happens to the distance between successive crests if the speed remains coyzq)e7 xb3 ;jkquw4 -tnstant?

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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 on thxxgcz,t .oo qel2y.2z0pbq4*e same string has wavelength 2l and travels with the same velocity. What is the frequency of the seconto. pc22globy4zq,* xq.e0x z d 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 tens-. /jppao) duwion T. A standing wave is set up. dp.)w/ua poj- 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 under1. idkytrs uzd/-xh o2qww)7, f52pl u 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 increased to 2m, with no change i2 1)hilu7.pd,uysk qfo5 2wxdt-zw/rn 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 wave in tf bk5+ t6ias,xhe string is v. What will be the speed,t5+ baksixf6 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 tetgr(3rr:9d v qnsion T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the tension is inc vr9:dq (r3gtrreased 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 v cxq:un u4y8c(hcs-;wave travels through the Earth, the relative motion between thu uv c:8hn;cs4- yxq(ce 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 lo4cmo s y-)liuu9 ee-,engitudinal wave. As a P wave travels through the Earth, the relative m4ysoi ue -e e,)-ucml9otion 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 w3o)- g daeb;/*wga1hu nqekx 1ave 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 reachhb31w g;s7 f+ 5pv5bg 0asy 35l.gl i*mawlhwhes a discontinuity where the hyg 3 fpi+.la*b5la5h 0wl 5g37gwv1shw;smbrope becomes thicker and heavier. 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 amplitudes pass each othej jp48xtz;h-ka v7xg3 r on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same region v7hgta3 p-4j k;8xjx zof space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. The one traveling towardu5hfn.7wt3*eb*y1 /uri ynzx the right has a positive amplitude, while the one traveling toward the left has an equal amplitudeynw*ueynifrbz 5 h.ux 3 1/t7* 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, occurek xd/tq4u /1k :bcrmu,/vhf:s 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 string, the fundamental foj),r9 , xqcoahl/9 jwgr 16srrequency of that string will increase by a ) so,qo9,6hagr/ 9cx jl1rj wrfactor 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 sprinmodj3 e6.ijn e j.-r8dwx.0t lr ,ptd2g that stretches 2.00 cm when a mass of 0.600 kg is suspended frow l.jd-2xjpm8r3.je0te, d n tr6o .idm 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 spridmbk)e:p*2qch2 lp9 yb v4llw48 i6r dng of spring constant 60 N/m along a horizontal, frictionless surface. The spri4c24 m9p2 bdq:bi)k we *dy vlhl68prlng 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 ofd +y(elgem2 u; 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 and let go. It takes the mass 0.50 s to go bg;u+e ly( d2emack 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 along a horizon ant-8kz;be/ otal, 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 i bk-noea8;z/ tt 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 throurr6vcx;ivh 95 ,zx rh6q- u0xdgh 10 complete oscillations in 5.0 s. What is the periodqxu96xh -; d xr ,rvrcz0vi65h?

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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 o2,n7aj txz k+4ge8ho ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of thnje, ohzo7g2 4xk+ta8 is 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 cxj-q7chq7 oz dh023k ronstant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed oqdz-k7 h7o3c0hjqrx2f 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. Thpo 4k4a4)h ljiq*zv l*z ex*1be energy is 8.0 J at this time. The mass is cut in half, and the systemlhxb* 4vqjz *ze)pk4i14l*a o 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 c oqx8wcko3; n(onstant 20 N/m along a horizontal, frictco nq x(3wo8;kionless 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(auflow;a ;: wtal, frictionless surface. The object oscillata fow:au;l ;w(es 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 attacheumi..,; jb gt:fzrd t-d 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 mechanical enerf,d:.j;bgr-u tmti .zgy 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 lkvd(b/df/q 4* j xqs1of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of4 vq/sdx1 f/b(ljq*dk 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 o4gxh43mxdamn ci 6t: -f 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 4n-dc:m4 xx6thm iag3vibrating 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 displaced 10 cm from u8 n+w8,rpif sits equilibrium position and released. A frequency,+n8 suf8 iprw 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 sprd.s2pt x+ua7r2p 3m )pc - iv:l/ovwkzing constant 10 N/m. The object iw:/xvr2z.p 7p uca+ kpm)2it-o dvs3ls 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. The ob 7bm9ua gq ktac9hf, )4d0qr2sject is displa2tacg7qqm dkubfs9 ha ,)490rced 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 ofo4qci8gpmrgorq ,om,8(br7 1 spring constant 18 N/m, displaced slightly from its equirq8goqr ,(m 8cp4 1moiro7,gblibrium 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 oscillates at *u.p v)jtn-dca frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. Wha*. ptuj dnc-)vt 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 vibvbf3h9.neg:b6tua5 q2s rzv1 rates with amplitude of 8.0 cm at a v91sr : ah3 6fzbtbg.q25uvnefrequency 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 equilibrium the- (-m8.8ujs4rt167 5 apmmnfj/dksyjs qseoh 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. 8 fqp5(7 u-mh8j4jyssjnmoks e6sa- / t1dm r. 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 sugh2d4u u0w6k3wf a9c3oka.elspended 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 andofhu .gwd096l3e3 akauc 2k4w 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 stretcaji5 za1-4j2mau ul,x hes 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 eq5u x- a4zuij 21ma,aljuation 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 versus time equ68al(sgfwpmkia9x7u5 c h3m+ +(6mpxsla7 c9if mk 3uhg8a 5wation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 har(b/gssl:x ut8q 9 f sds)*wl7smonic motion obeys the following position versus time equation:(sws* ufl /lsgqbst 8s79)xd :
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 eqluhuu.2 2uht69auda, tcz6t h)e(9r;tabt* cuation:9ttl)ua*th ch9ur.(u,c ;2t6z ah2d uuat e6b
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ofs k s8+. pz*vf)d hnt8idc:5im a spring executes simple harmonic motion according to the eq+ dv:m)zks8pd* .n fc its58ihuation $y = 0.50 \; \sin (18\pi \times t)$ 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 osciliao.4l ze2uamkkv; /0 lates on a0 zaem i2o;v4l .akk/u 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 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 :nom kg tub24e*/mr.t) What are its frequency and period on Eartt o4r u./*e2 :ntmkgbmh?

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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 isz. rir 8 hwxmy4),7*r(r s5v vnzq1jwv 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 Earth. What nn,6n eb20b hv40nrmrxn.i;m 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 cxnf:t8ine8. long. What is its period on the Earthf8t:xnecin.8 ?

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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 gran)m,nd1yd r bbn 7hc/c+vrtta-o .md1 7dfather clock is 1.0 m long. What is its period on the Moon where ta1tdd/br ,tc. 7y mcn1dv r+m7n)-hbo he 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 99c. +w2wtxafe4zicl of a 0.25-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium posc9i+lfx . w ctw9z4ae2ition 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 m /(i*y d zr;0frtvg3la 0soq/wass has initial angular displacement of 8.0e. It oscillates(* gvdayq0s;/lot/3irwr f0 z 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 time. The frequency-nb4 vbjz 1w0x of the wave is 1wxzn v 01-b4jb20 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 givk2h6gv4:g.r/n y al oal )c.zwen time. The frequency of the wave is 120/n w r2h l.la6gzc:v)gy.a4o k Hz. What is the wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequency of th h -q:agj- aana)lt:p29el7 pqe wave is 120 :pp a27a ) t9agqan l-elj:h-qHz. 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 of a wave which has)*pb*fye .xom 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 frequencc ue)eu3* *zrb5qe gt -+gx6pjy 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 wavw0ote.1wf)v ze has a frequency of 12 Hz and a wavelength of 3.) v10 o.ztfeww0 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 velocity of a wxt+18cc qik-hi:k1ydipmv4 9 ave that has a wavelength of 3.0 m and a frequency of91d4: p1vxckm k8-iqiy+ ciht 12 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 fw (k:zzl/bqm.(6 k l okehezje4,v19m 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 medm )*)6wbf a.z1r;kw; wyby zc*lt6hass density 0.0050 kg/m is under a tension of 1350 N. What is the wave spe)mb6tr )6 l w1 ywwa .hykd;ez*;f*bczed?

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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 N. What is the v.4 jafi 4esm6helocity of propagation of transvers.j6 s4ah mf4eie waves along the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m is traveling down a 500 m longy1 bu8o+e 3kn0e-d cdb wire whose total mass o 8yndkb+ 0e-c1edb3uis
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-t,ao3*hrfoi76 s vjk8m long string fixed at both ends is 200 m/s. Which one of the follvot *r3f8 ao,k67hsi jowing 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 freque hz11pgwnk -dz;(d hpc21l cs+ncy of 500 Hz, which one of the following frequencies can set the string into r hk21s;dzh l 1 n-p+(gcpzw1dcesonant 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 standing wavuimw; l60/ qjbe driven at a frequency of 480 Hz.uw l j6;/i0qmb 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 frequue* -m1wkdd qe( x/c;dency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if-e1d (uckd*xd m;wqe/ the standing wave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 1.5 g/m f0 *zxafiw n47u)s2i ktdlvf h/ht +(5is under a tension of 20 N. What should its length be if its fundamental resonance frequency kftus /ivfla 7 24+(fnidxt5z*hh)0 wis 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 dru)ss,yogxqu+hp:+ :ensity 2.00 g/m and lengsr )y uug+hxo:+ s:pq,th 0.600 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 string vibra+wd nn,66h*piafjf 5x tes at a frequency of 85 Hz, a standing wave with five loops is 6ahpn* d fiwf+5xj ,n6formed.
(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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