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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 callw - h*cfc ;encjbb1oc(+4 b*fhed 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, sk3k(a0s7 4vxpifeh c4a/ d15mq ( jxkthe number of cycles per unit time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from theg yt2d ) 9ux+hzq:2mnw equilibrium point is called :mwyh d22+)q9zx tugn 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. Whueq*w,nvwhk:5, dbt 3en the mass is at its maximum displacement from equilibriuv,tb3n,qwe*dw:h 5ukm, 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 throwz6xo:qcj;z , ugh the equilibrium position, its instantaneous velo:6cqzjo; z wx,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 fro-o0c;ogmee 3p;uu eg7 m equilibrium, its instantanegoe-; oecgp 3um0u;7eous 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 spml )xk*g)r)6jxi 4jlf6dp0blyn q l 7)ring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a minimu))llg0inx jlb 47dr) k6yxf*mq6 ljp)m?

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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 vezj-xz7skf;hdir a8 :9rtical spring and bobs up and down between points A and B. Where is the mass located when its kin7i;z-8z djrx9fs :ahk etic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down between points A anf haal0aiaz7+d: 7j7s d B. Where is the mass located when its+sfj7l 7haaaa07d i: z potential energy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and ; c99-j4 mbp4z.ngbr fax4awfbobs up and down between points A and B. Where is the mass lx4fw b99 .4ncabr4zgp ;j-afmocated when its potential energy is a maximum?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the amplitude of a vibrating mass-avf ez+l(j1g+ bnd-spring system produces what e1+ fe+(gbzl jvffect on the system'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 system produces what effmd*2x i9tlgn0ect on 9ldint0m*x2gthe system's mechanical energy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring constant of a vibrating mass-and-sprinfsnumkc, t i4p 4z3 )pdl51je.g system producese)3 .mt41 c45pi,j pzkdsufln what effect on 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 jqk7hq+ lyl-u c/ism,r :9/fla spring, both on Earth and on the Moon. Where is the period the g usmq/iclk/lfj:+y r9-,7qlhreatest?

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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-ah4du ;(nie3 pb2ckcu v/1 eja6nd-spring system causes what kind of change in the resonant frequency of the system? (A62n hc d1 puuv3cej;/akei(b4ssume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-anwvqyd:l v oyw13t3m+q t(s ;+nd-spring system causes what kind of change in the reso3dt v+nw qyw:ty 3osl qm(1+;vnant 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 amplitudxpgsyaa1/)7t ;nwt w6e of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no othn )sywpat6;aw17t/ xg er 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 thvhz,rc )k ga 6,6fxdb4+-rsy8knoo :o a weightless string of length L. For this system,h+86: -ho k dzkrxov 4n,fbgayrc6 )s, when undergoing small oscillations

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the mass of a simple pendulum is tripled, the time required for one coom *r /8 gkej(xa;esi+mpletor ge+jkx8a/s ;(e*mie 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 3 /89xzzlh sb36nqb:tj,ccj gare 3.0 m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the perio 3 g9hbjj:qzbxcl,t8/ cs n36zd 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 vimqr6ga4wa e uux 1m--.bration increases m agm14u. xq6-w -arueby 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 pendulum's frequency9:o).q agt -iovmqd)f if both its length and mass are increased?q oa.:- ioqg)df mv)t9

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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 hitr 1q0eai3 :v2t.9s ymtn( ependulum B. Wh9er. (nqh3imy a:vt e0ttis12ich statement 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 Moonrba kb241z g;a, where the acceleration of gravity is less than on Earth, tr 14;bbza akg2he 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 representyj hm-aq cn1/+s


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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 repre3y *5bcbmuwm-5+tij csents


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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 representsnlh3s kb8 1n- zvt-6xv


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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 amplitj:x y y8nul,u +v nho,g8wp4b/ude 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 ozt+ stiazt7w .:* zj.ja5gd2df points of the wave from equilibrium is called the wavegd azjj*s:.t5z2+t.i dtwza7 '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 suo-.-v ;n5 d5v2yxckbui 5t ce.iw-fkw ccessive 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 unit tih i;o(szc/7k hr-dv;h me is called the wave's;h z vh ridh(7ko;-sc/

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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 wave - u-6 2mqxhc2g(pjhty'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 distani:utci;m6o6r/ 8e 0jke(ed; fbr3f ywce between successive crests i;ry6c ei/eu8wf eid0; b3mrj:ft o(k6f 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 string with wavelength l anfkl05h 22/ uajp*rylvd frequency f. A second wave on the same string has wavelength 2l and travels with the y /uvpfr0h2 kla*l25jsame 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 om 7d:q4a* rqxir,fe;pa w u5/sf length L, mass M, and tension T. A standi ea: fami;up7qwx/rq*ds 4 ,r5ng wave is set up. Which of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wave inbhud5azs+4.b mesp yy0*/4e c the string is v. What will be the speed of a wave in the string if the mass of 4ps. z4cebebdy* y u5/m+hs 0athe 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 lendgjil8ykqdzx7;l*x/ k l+6 7c gth L is under 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 length is increasedd+c i/ljg6kk*8y7 lqdz 7l;xx 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 sm f6c x-,j rbw;dk*(hopeed of a wave in the string is v. What will be the speed of a wave in the string if thbo;dk6j -w, (xf*hm rce 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 wav87 8vjnlhc9qjdz *ut /e travels through the Earth, the relative motion between 8jlq8zt n*h cd vj7/u9the 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 wave travels thx jhtuti6ld7h+ z l i: 6l;a6-q,est6jrough the Earth, the relative motion j67a u ,;qej66itltx i6 zs:hh tl-+ldbetween 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 wf7gl zub7i,-6 qu;y;tih1rbs ave 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 tweg-d/k by- yf;k9ke*9jk+g a thin cord reaches a discontinuity where th-t+ybkkygej9g-kd;w fek /9 *e rope 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 gds)rqmq g+ci3 2m/,qpass each other on a string, one iscdgqr+2i/q ,smqm 3 g) traveling toward the right and the other toward the left. At the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. The one travelinge0m x/7r ( oz)85nn eu-gcv8x/mjcvw l toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. At the point xxzgn8( mvme)75/ cne cro/jlv0u-8 w 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 fixj,.7pude*j,ngir h2 l ed 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 string, the fundamental frpa) dmal8 dd2 i7+u.zaequency of that string will increase by a factoiu2.8+7dpm d la)ad zar 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 stretcss7px./us9eay+ uj gru2d9 mgp x .y4/hes 2.00 cm when a mass of 0.600 kg is suspended frou/+gjgxyu9s2yxr4m 9 epd.s .pau/ s7m 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 ou685k0 8qowq 9 ayuydvf 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 back to its equilibrium position when it is u6a9q85vo8q uwdkyy0oscillating. 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 along a horizontf f l*nz aveg,i51i*3qal, frictionless surface. The spring is initially stretched by qvg i5ei, nz*ffa1l*3 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 springtzpsro)nz1ye 9t mw,+k9o j,.v ,odei61km5 e constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretche t+em,do5nm,.11 re69eoz pt,jko z9 )kvwsiyd 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 SHx3t z(8rj./ 5i5 ysjycyh9dvlM. It goes through 10 complete oscillations in 5.0 s. Whi9 yyd/(.ljzyxv5cjs 85r3 htat 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 and forthrm .-bdfs:5dp 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 edrm :p-d b5sf.nergy of this vibrating mass when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached togj7xbgthn7q4wg g6 .2 a spring of spring constant 20 N/m along a horizontalhx.77g62jgw4 qbgt ng, 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 total energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with amplitude of 4 cm. The energy is s t4w+)l9upsd mp0 8vx8.0 J at this time. The mass is cut in half, and thls4+sd0umv)x w 9p pt8e 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 const/ercv,g(zi30j unjaw*k b) kun() n-y ant 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 amk jw0ek g3vn/*n()( razjy)-ubuc ,inplitude 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 +fs55tgz.3amg xz m 5lhorizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrtmlzma55gg 5szf. x+3ium 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 attached to yv:5l tgzj3,y+0i yrzthe end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 mytv jl50+yi,3r: zzyg. 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 spring of spring con9a;/ps 0jny hdstant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechani h;pand9sy/0j cal 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*u *crns+/s ly from the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of scs + uyr**ln/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-spring system is displaced 10 cm from its equilibrium pn w :p)ibd))vqosition and released. A frequency of 4.0 Hz is observed. What frequency wouldwqb :p) n)dvi) 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 atty,hrmacj r /+/ached to a spring of spring constant 10 N/m. The object is displaced ,+/r hr /acjymby
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 tox 3 /i39r:z5ys1 ezoazsvlnhe w/j+-v a spring of spring constant 10 N/m. The object is dis+e3 zozwn 1se x/h zl95v/ j3yra-ivs: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 hun.y pmdit;vot 1vx9cq2,g/ke2 g from a spring of spring constant 18 N/m, displaced slightly from its equt.xv,9ct2 qmio/d ek12p ;y gvilibrium 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. buzw6vx9 q,pm8g5 ufqrn ;94 dIt 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 attained by the ma qb9n9guxdqu6f5p,zmwr ; v84 ss?

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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 sp 3/wfsofi1 --)jxn w0yz7n ckv f(v)varings. 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 yj7v )swc)a( xk -zv1ff/30nvow-finof 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 eqrm8 xzxq:l6y+kz /qh9 ,i :lmguilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the period of oscillatill,q g: /6 irxqkzzm+hymx:98 on.

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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 e ;:kt4r2nmxl jifc3(m quilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from ;ixcmmknf3 2j :rtl(4rest. 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 azr(,2 vr wcm o-/5djrspring. 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 dow(raz/2 o ,5j-c vmdrrwn 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 positiolo(ux;g pj.ycz 3 6ec1n versus time equaticcox l;(epg1 uy3j6z.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 harmonic motion obeys the following position versus time x:+smn5g, 8e gqfczxva vl*35equation3am55:gz ,xc*qgsvexv8ln f+:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obey8 -vax) bs0dq3yv/jnf ah5xb 9s the following position versus time equation/vbab)3a 9 d xxv nf05syh8q-j:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmonic motts wg( k. f xq6az57mw+ t( .(q)o-d(ksczttecion accordinx dtq)(6wtt takes+qc -(75zkmzc .gf((wos .g to the equation $y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

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74#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A 1.5-kg mass attached to spring with a force constant of 20.0 N/mlha9j 4/, m7,p3ye xfo itlj1a oscillates on 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 telhiajm ,y,/3l1 fo j794pa xcm.)
(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 eqwer0jp5m(1 y 2xyu( complete swings in 8.0 s. (a) What are its frequency and periodqruexjy0 ( 1e(p5yw2m 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 lon/(zq*la6 h /a 1dbgqxxg. 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 opa4s82o746zd)mn 6c,d5odbc zvzc ds n 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 cof p3y*ftnq6 trwt:4(l,mbd9n /e4xt lock is 1.0 m long. What is its period on the Earth? fprq6:bnnf* mytt4ttoxd ( 39/l,4w e

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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 is its period q4c 2tpu6b (/ ono/up4c,ygg+igv;gson the Moon where the acc 4bp 6u4g2 ocvsgpqi c/,ong;gy+u(/t eleration due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.25-x+hi1o z hcg31xj/p .xkg 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 with a frequency of 2.0 Hz. What frequency would have hg1phjz +xxx/o.1c3i 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 nsl2,vw-f1 it 20-g mass has initial angular displacement of 8.0e. It oscillates with iw n-t lfvs2,1a 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 ov 8h pjq0-zu*qf the wave is 120 Hz. What is t-p8 qhquz*j0vhe 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 wav, qju2dyrwqvpv . v6::e at a given time. The frequency of the wave is 120 r .,p:y6d uqv2vvjw:qHz. 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 g(hdbz 5ziou f(c3y r0:iven time. The frequency of the wave is 120 Hz. W(c :0fz5ur (3yhboizdhat 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 61iw.n tu( q +elzwb64jyi2cb 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 e8vlhqko 8jlv) t5to-txz ,*)a 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 wave has a fre ,b5 y9pl py5+e o hq4w21wjsnsv4ry.jquency of 12 Hz and a wavelength of 3.0 .14ehy5v yq9 b2pw+s,pj4onylj 5rswm?

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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 wavele+xod64hy6ngv3* l uf. 7x0qa nvty7g nngth of 3.0 m and a frequency of 12g l06hy+n u7ofnd7ny3xtx .g qv46*a v 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 traveling at 5miyie( d7a :h1400 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 tensi h btx3fs;t,-pon of 1350 N. What is the wavext ,;p3bsf-ht speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is under a tenq jdcw/,: dl,-cv xz3zsion of 180 N. What is the velocity of propagation of transverse waves along th 3v/, jwzq:ddzc-c,l xe 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 travelinpu sz+h dkrk6l+b, vcvj(ik2 b.9nwoa5-(6h qg down a 500 m long wire whose total mass buv9k h2(s 6oakpc -vdql,.b jwk+r(n5i6zh+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 b 5doj9zz0sdv-x p m7c:8ej7 z2.0-m long string fixed at both ends is 200 m/s. Which one of the :8-5x7zz ojddes0c79b p mvj zfollowing 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 fundamenvzqe.e 3xussj(l/j - : )kubt7duto13tal frequency of 500 Hz, which one of the following frequencies can set the stjl3u1e:b) k-/u3sujs ( 7.v texotzdqring 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 standinda pu7 g.v0 /wag)r)cqg wave driven at a frequency of 480 Hwgd)ac a.07q) vugp/rz. 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 t, cm20v/jdw,sw cr6p 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 4wj,cr/0w6v ,d2mspct 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 of yylv( hyu nac;i;:0n 120 N. What should its length be if its yun1:n yi0vy(a clh;;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 mass dens9 (7mqm+ kqwytw es7:vity 2.00 g/m and length 0.600 m wqkt7s qw(vey+ w:m9m7hen 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 cvit;6l o+j4m .hl. in 9uxuk3zyul0+ends. When the string vibrates at a ft+;3 ul i.l06+9jvm. iz cou yxnh4lkurequency 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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