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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: 匿名未登录  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 proceo7f4yz on 1d,xss 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 of9nvi)4htffe5 u lss,. 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 m38ph yvtz:b.b * q( k1-eifa :huny+qoaximum displacement from the equilibrium point is called th:q.1t f-n8+a3zh kq(bpby*yh eiu :voe

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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 thexzmc6* *9rfl g y,vjy2 mass is at its maximum displacement from equilibrium, its inst,6zyg*ymj v*2 xcf 9rlantaneous 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(0pc*,-njm vc,z m 0oir;xq qz SHM. When the mass passes through the equilibrium position, its instapmi;,q(c *xmjqz z-o0r ,vnc0ntaneous 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 mase:-.uqza+ghj +x 4 r y(.grjbhs is at maximum displacement from equilibrium,:jzgya.h+4+ u-gqh.bx re jr( 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 vertica7t0ct en zs4zqls/x gl,50v- el spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is ex7 v gq/ 0tlz-5 sl,4nets0cza 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 8drih9 gbmnz82g; u. gand down between points A and B. Where is the mass located when its kinetic energy is a maximu.iggzg;nm28u rdh9 b8m?

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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 (5d o;q6z e p8ew4tthh+,odws between points A and B. Where is the mass locatz;4 5eoeph+t8wdqot(6 d hs,w ed 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 vertical spring andw7dsp2)sl2 fepav d4*v asi2d; /ubd: bobs up and down between points A and B. Where i;d bwv2:s f7 ) dd2pas* saeivdl/2up4s the mass 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 amplitude of 7k 1(u(indqih-om *tm a vibrating mass-and-spring system produces what effect on the system's mnt kmm iiq7-u1o(d(*hechanical 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 systemyt4ga9fo u l3 xdy595o produces what effect on the sy fl4 5duo9yy5g39axo tstem'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 aw 9(ipxh bq) 3ewpc 7oyy6d3o5 vibrating mass-and-spring system produces what effect on the system's 3ch)7ip b(do 3 oqye w5y9w6pxmechanical 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 Mp8l k3p b1y8lr nrai p/22ldb h*8lap9oon. Where is the period lhr2y8p3a b8ld*bapr8k29/ l1pip nl 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*l pbx :*bw.uu of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change ublu*b:.x* wpin 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-spring system causes what kind of ch dg(7y6jljfv/ ange in the resonant frequency of the system? (Assume no change in the system's spring const6j(l7yvg jdf/ant k.)

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude of a th+h s 7qkl4p(sd;bt *mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no other changes i; hd4*+pt7k(slsht qb n 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 attac6 1p dyn+*xsnghed to a weightless string of length L. For this system,ps6 d1+ xngyn* 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 comple0efcy4c aq.7ewh sm 6c+7a +gtte ve m 7 s6fatc47ya.ew ch+q+cg0ibration

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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 T. Pendona.t;cpn1-9/tw a y hulum A is twice as heavy as pendulum B. Whata9.ayt nhnpc wt1-;/o 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, the time for one q ccq hft)5zf8.k4k 1lcomplete vibration increasz8c4)1flhq qftckk .5 es 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 pendulum's frequency if both its len z mjfg5ug05m9gth and mass are ingmz09f55 jmgu creased?

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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 sia1ot3 1 c5 5qtlexta-,pnllq.mple pendulum B. Which statement is corqx3 1tl5cql 5leapoant.t, 1 -rect?

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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, wrrh/-ku qfrl8 /pb3 .os,+xgwhere the acceleration of gravity is less than on Earth, thep s/kg,-3 /r8rl.xhob rwuf+ q 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 representsd 8t3o)jf)yrnb ( 5ylmyi du g5v+5oa rj6xn;5


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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 r5zp+x hjbl)l+epresents


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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 reol,my , y+s f4mslldq-qg .*:fpresents


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, :m8pje2hh3tf94 yvf othe 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 equidz e icg0iy-cyqq ,5-5m2 ri-qlibrium is called the iqgq5dc,q ez 5cmy-r02iy- -iwave'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 succoz 5n6la:/pr26( rqsu( hamgkessive 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 tim .v1buza :djx(3h)b ds3bnr-pe is called the wave'sbpu3dv r(snjh:d a .b3x1zb- )

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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 wasze6h1)2w gee - ,oyf 88yn7lgf0obq kvelength 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. Whatxp aodip -2su1/x ui5) happens to the distance between successive crests if the speed remainsi)p/ixx1 upua os2 -d5 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 w m9wm+ nd5:8ik jebs1kavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of+1m8:n 5kwebjskd im9 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, aockf9e: 6 )dhwnd tension T. A standing wadh k9 )6oefwc:ve is set up. Which of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wave in thh.o* ry aop8 b k-*4xel2t34lwvwcu g4e string is v. What will be the speed ofbop**k e wl3a4og42- 4uxy.rwlt8vc h 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 wave in thqowu5 pk .v4 vm7xsq(v;e1kk7ri 3b. ze string is v. What will be the speed of a wave in the string if v.7kxu qbwq i37kvsoe4z.k5;mv r(p1the 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 wbj+nq(/p i( c9zh odk)zam;/tension T. The speed of a wave in the string is v. What will be the speed of a wave in the st(bc/i(wno dpaz 9) h;/k mj+qzring 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 w 3wshxzrgj,l/8nq6dz9t:( z:fyy hr5 ave travels through the Earth, the relative motion between the S wave a3yzz8:s9 (r h ,wjxf5/lyr 6tdghnqz: nd 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 kbqmg d.j+(rkr8/b2P wave travels through the Earbk(rgr/b. mp8+ 2 kjdqth, the 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 w8/w xx x/fvz6 in.ih1uave 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 x-g c(qacb k9 0)ry/l. n4hlq4tf (oyuto the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientationkl/(y-(o4.9u0 yrx abnq)qcgth4fc l 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 otfo4xi2 +9tl aoher 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 t+fl oia2tox4 9he 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 otherh 9bk pt:vmx5ng1en:2 on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. At the pb gv m1n2k::penh95xtoint 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)svn;6/tk daa nzus. 9 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 frequency o*fr+2 vuq sr8kf that string will increase b qur28* vk+srfy 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 2.00 cm w/d 5ss 4lgy+fw-* oiqjhen a mass of 0.605+ ji/fqsdg os y-w4l*0 kg is suspended 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 spring nwuk;0c 8yw,yof 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 whenwuy ,n80ycw ;k 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 60 N/m along a p qamn4+ :+-eoni;spd8i inp,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 t+i, mi n;os8ie4p n -+aqd:ppno 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 6 s7: /h3k;a v ojr6kpi1a,rcwcb f(lwspring 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 /w;kb7 vfj p3 6 1(w, iaccahrs:lkro6s 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 u4wjs ikz,f).vndergoes SHM. It goes through 10 complete oscillations in 5.0).ki,sf 4vzwj s. What 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 forth from the free end of an id+.pqmfc5t3a i 6j0abfkwh t 0;eal 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 m from itbp03qfkj +.t0 t6m;hcia wfa5s 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 cons3 qr.yi pl5b+stant 20 N/m along a horizontal, frictionless surface.lr.s5 3qb+py i 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 8.0 J at this timh8iivn5/jga7ca0-qxj n00 )q 8yvj+hzqs g5 ye. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the en+v-q0 c 8a 0xhv hngi/a8q7ji) jzygy5n0qsj5ergy 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 3.:e kq.w)jljoho y8u 3*nq hwconstant 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 p)no3w e.qo h8jq3* :ulwkjh.yosition. 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 springjk h6n9y0w+xc x)v;l h*q *ubm constant 20 N/m along a horizontal, frictionless * h0 vx6bhm u+y9*nwc);jl qkxsurface. 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 attached to the end of6+ 0u+dilm vnqj(o8p d a horizontal spring of spring constant 50 N/m and set into simple harmonic motiv n i+d0u(qlpjo6 +d8mon 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 spring of spring c/h j7-k9ja3b d1na;y3 oqhglz onstant 50 N/m and set into simple harmonic motion with an amplitude of 01hlg- d k jbn/7qjh9oya 3z;a3.10 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 n1 t1bc, * iwjewpd53dideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum knd5dw1i tcj b3we1 *,pinetic 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 dvwhw*:tuq(w0 )(id2 rrw,jmn isplaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be iuq ww0whn :*( wmrt)v(2j,r dobserved 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 spring con.nhb8).:i0 j d /yak dr8furnistant 10 N/m. The object is displaced by8ifid )kdur: h8n 0a. /jnb.ry
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 attachedhm:l, i/asm. p)h+zc9tyw/m l to a spring of spring constant 10 N/m. The object is displacedlm.zh)+paw m,l:cy9/th i/ms by
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is hung from a spring of spring constant 18 N/; d9 5nl7ic aqms2 )gpd11icnvm, displaced slightly from its equilibrium position, and 1;qd2i7c1pnm d)snv9l5 i cgareleased. 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 1.27 Hz when b+qv j4. o+duxdisplaced a distance of 2.0 cm from equilibri+ qd4.uxv+obj um 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 attached to different springs. Mass A vibratessf rws95qe58 f with amplitude ofe r59f5 sqf8sw 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 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 mass stretcikx) t za 72jsfj-q,7ydo0/mg hes the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cmya0)isgzfx o dj 2t/k, jq7m7- 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 stob67mtqo npv.pj-,c 9retches the spring 2.0 cm downward. The mass is then pulled an additional6p. 9qbjt,7m noopv- c distance of 1.0 cm down and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended l40n;kgez r q;on a spring. In equilibrium the mass stretches the sprinr;; q ne0zlg4kg 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple y gmfjn +.(n4nharmonic motion obeys the following position versus time equatio+(n g4fy.nnjmn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 verse 74xp q*huh,mus time equatio puqx7*h m4he,n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motl 3cwc*hzsu c g61:*7ibnlgtq3 qr76vion obeys the following position versus time equhziq u*vnc*cg:c37bt6 3rll16gq 7 wsation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 szd 8 0w7:pmoblimple harmonic motion according 8o7bmz0wp d:lto 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 sp6m wy 19)jrm/sm qkgk6ring with a force constant of 20.0 N/m 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 stretchwmmmqk6 s)yr 961/jkged 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) What are its freq6mauic * zsb+75jtkth/k2 oo4uency and peri*ij t74kt/ 62hzasbo mo5kuc+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. What is fd xt/ox fmq1zh6h )28/ -nh2a7 emcfsits 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 2bq 7vinqp(9 8k.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 i)sq*2 axhdeai9 x4zq. s 1.0 m long. What is its period on the Ear2zea4iq9 x.s dq*ax)hth?

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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 clocum4.w+.l 6mfzt( q j*sgl4sbfoa.,cn k is 1.0 m long. What is its period on the Moon where the aj,c*bml of.f4uln6.mw 4 zt(.a g+sqs cceleration 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 consis;lhnq w 6:u8k;pg4m mpts of a 0.25-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulu uqm4mp; k;pl68 wn:hgm 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 mass has initial angularo o1rb;c iv8/;itkhkxlt,47r displacement of 8b 8/4t cl71irvi;rk ;k oo,hxt.0e. It oscillates with a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" ofxc,mi g- i*6go a wave at a given time. The frequency of the wave is 120 Hz. What is tm,iciox g-*g 6he 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. Th*chf2std1 lf+ e frequency of the wave is 120 Hz. What is the wavelengthc2t*fl1shdf + ?


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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 giv2)tof ;puh r5sen time. The frequency of the wave is 120 Hz.f5p h)r;s 2uot 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 of7q9ec m/ct6qe:z k -3cdjx5/j otk+cn 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 frequency of;r yzpf(bp9m5ouu0ca/ 9d3pl 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 iffr3.h fjb)9v o a wave has a frequency of 12 Hz and a wavelength of 3. fh.ov3b)jf9r 0 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 wave that has a wavelength of 3.0 m and a frequency .5.nuq+s sg5ng2dnpta3 5 sn kof p dsg.tsns55 gn an.+k325 qun12 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 a2ut :qq4e dej/t 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 tfw:qo j7rq/jx, z .4kgension of 1350 N. What is fq7,z/wr jgkqjxo4 .: 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 under a tension of 180 N. What is the ve,oj 1lai kuhe e f(/-3,fcmi4ep;shc6locity of propagat(4m1 effl p e- ii,ukehoac j/3,chs;6ion 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 down a 500 m long wire whoqrt wi.(lb ac -6hz2jj/h8ns0se total mas6zw./-t lrh2hsnc( bj 08ajiqs 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-m long string fixed at -3nmphwo :/e l4efh(j both ends is 200 m/s. Which one of the following is not a resonant freque pjhlf3enmwe:o/h4 - (ncy 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 h4 8aaf87bobtxcux 1jx/5k+ n of 500 Hz, which one of the following frequencies can set the s/87 bck ftbux a8+hanxox54j1tring 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 equ)q2rrw: 6 2rmu gdr nyj,er-z).a wj0zal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal segmentsr)02u6 ,2qm-n.dwwrg zjrr ejr ):zay?

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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 freq.l(+ vnwwevl8 uency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the sv8. ell+nw(vw tanding 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 is under a tension rq ,:t5 gqm pi2g*bl3gof 20 N. What should its length be if its fundamental tg, p2mribgq5 qg*:3l 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 ybu( sh4n1soom. 9df g( .j7avdensity 2.00 g/m and length 0.600 m when it is subjected to teno ms4s9.afh d(y1bnuv(j. o 7gsion 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. Wh)ypl sy usac5v7 )z,+ben the string vibrates at a frequency of 85 Hz, a standing wave with,)+ 5a)b ylps svzc7uy 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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