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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 peru w79lp4rmz .jiodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the numbymugb+wnvu;63w;( zov( h3sd er 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 distp 3422+ sy s*rdhuiymplacement from the equilibrium point is called 3sryd2st+ 42h yumpi*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 ma n ul.jtf(f 84*5fkmncss is at its maximum displacement from equilibrium, it( nfjk8fmcf.*4nu5lts 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 unb;o;obnj , pekv/2j:ldergoes SHM. When the mass passes through the equilibrium positionj,ljo 2 ;o bbk/:pve;n, its instantaneous 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 danz0gb7 te ./displacement from equilib .7z0/gbdaetn rium, its instantaneous acceleration

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and d /w)xh-)o muadown between points A and B. Where is thm x -)dhwu/)aoe mass located when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring an***ol b hako6qd bobs up and down between points A andqo6b* ka*oh*l B. Where is the mass located when its kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical sprin(6pgwji yvv) u*qrf 4)g and bobs up and down between points A and B. Where is the mass locat*4 vg)y(pu vf)r iw6qjed 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 spf/jg4r -f-t czring and bobs up and down between points A and B. Where is the mass located when its pote /fgfj4-c-ztr ntial 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 oh66/a +hk jzxof a vibrating mass-and-spring system produces what effect on the system's h+6 x a/jhzk6omechanical 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 (r -w qo yk) (ho/zvy73f7ry39hrfzauwhat effect on th 3(uhkw -rozy yfhr(yqo77)9/a zfvr3e 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-spring system produ1 .nh57d .kkfua ia1jkces what effect on the system's mechani ikju1kn.f7 h1 .daka5cal 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 sprun5qnnmwi6z4si-hu6 *) +h0r h.lnxr ing, both on Earth and on the Moon. Where i n0szh4xr 6uq n+lniw.u)-65inrhh* ms the 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 what kind olvn oko2o8sl) q8s3f/ f change in the resonant frequen nk3 sl88 l/fv2osoo)qcy of the system? (Assume 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-and-sp97yp.yeo y *a-s:ew8p52 kha ngov8 dbring system causes what kind of change in the resonant frequency of the system? (Assume no change in the syste8pv. 8 oea*2p-b ng: ysy5oekwh9day7m'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 a mass-and-s*(k+oxh knj3 w+ovmjl3;dro; pring system causes what kind of change in the resonant frequency k+l+o kxr; (*jdwv3o3;j mno hof 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 s9) +cna1 uqnajtring of length L a9nn)caq1+u j. For this system, 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 simp, xqu6k3arkb; le pendulum is tripled, the time required for one complet,b k ar;u6x3kqe 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 lov(d kjqfcg9 75ng. The period of A is T. Pendulum A is twice as heavy as penducfkg9(dj5 vq7lum B. What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pendulum is tripled, the time for one complete miqk9:s lgv+9 vibration increases by a factor of+9s m9vkiqgl :

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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 length and mass arebf. nxb;/li.e4gep41:i jo);hpab ej increased?obahg lpfeb.:4.ipb;)/neije x1 j;4

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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 xxkvv,d/-(0fo *asif4rpq v (efgf 2:at twice the frequency of simple pendulum B. Which statement is correct?p/egq2v4 v-x fda fo*kf(,xisf :(0vr

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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 4f5yim bx +0stMoon, where the acceleration of gravity is lesif4b 5xy0m+st s than 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 reez kp0a.6d4cfl6ud6x 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 representsvd.b . :jumby5n- 4-i pxhlkm;


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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 represent9h0 juw (*hx6yee0mn ts


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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 vibrae 1x xwm mw)zn7:g*,ak; wan;ytion 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 displace,87g hu5ijj4sipw 06szba gq+ment of points of the wave from equilibrium is called jgwsga ,jhi87q zb046p+ i s5uthe 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 s5oxrc5rlu shk )-8h ;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 pox6 h) *7k+mtlw hqvq;nint per unit time is called the wave'hqm;) x7nl6hkv*tq w +s

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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'(92tolgkd 9 siu4+ml js

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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 happ0gq4em*p2jmnsjoj . c l1:zt.ens to the distance between successive jmz2el 1 mpogj0:snq.tc *.j4 crests if 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 waveu lpcr qkeo b1/re )t).at6e+5length 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 the second wc ul)e ot5+6/1rb e. kert)qpaave?

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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 mxfk;qai xs.- ))a1gmwqm9;njnx - 0fM, and tension T. A standing wave is set up. Which of ths1 ;n-f aa kw);9-xxm0n.qj qgfimx)me 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 the zyxs v ;-:ps;qstring i;sxs:- zqvpy;s 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 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 tbn- /gf* 95eierczv8f1dapr7 qnv2m)ension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the length is increased to 2L, with no chaf 95*qd1rv2/rvcafze7 - nm gnip) b8enge in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wave 2qc;i5y9(v7g klyb lrin the string is v. What will be the speed of a wave in the string if the tension is bryv( l52gilc ;ky7q9increased 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 w8mo-i/ ,cjkm0)6u:vihuti sc9i 3s cn ave is a transverse wave. As an S wave travels through the Earth, the relative motion between the S k -co8ut mnsivjs06i 9 ici ,u/mch:)3wave 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 ee.w)qj69l za- k( vpfis a longitudinal wave. As a P wave travels through the Earth, the relatik-j fpql)v(ee.6z a9w ve motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wave is,e i.j)fybh+ t: 9tglv

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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 f8dp;gl;wuu - cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflectedw-u;dulg pf8 ; 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 other on a bd g vn fobc1gyc.2t8gb+84z1string, one is traveling toward the right and the other toward the left. At the point that they occupy dcn 1 vf 14tggzg+ ob.cby288bthe 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 traveling toward the( kz8t4njlg:s,;1 go-l ljbzh right has a positive amplitude, while the one traveling toward the left has an equaolsz bj-1:l(zjgk4g8,t ;hl n l 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 bm:t:frhm9a+ 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,+te)h8 pq mlbu 7r-,:9y;g:mucr uvh56grwfw the fundamental frequency of that string wilp8 r;y5w6-cufum),v:ehrmgu g9 lbt7 w:+qrhl increase by a factor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring cz 1 sxmil:ozvx/n8i((onstant of a spring that stretches 2.00 cm when a mass of 0.600 kg is susx i :vm/nl(i 1zosx(8zpended 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 of spring constant 60 N/*rov4 w0xn ;s5 yzzt,zm along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and loz0 xs*t vzzn w5;y,r4et 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 60 N/m along akt / z 9g;lhb+on3k 0ke/o75yw(fopsa 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 oscillating. What is the period of /5hb k0yol(koa; feo7+p9kszw ngt3/ 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 sp a n.agib9z t7m+s)jafvx2e)0ring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stavtm)7fa gs.+n20xea b)j i9z retched 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 SHM7wjsn5f , eey/. It goes through 10 complete oscillations in 5.0 s. What is /e ,jf7y ew5snthe 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 8 nzwek4s1qb0d;ebz)-yv kzx nx:( 9vforth from the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium posibd:e xz4qxk1 s0n be8kvyzz v(w9) -;ntion?

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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 aofo;f: aqo . nhhy:a79t /i9qc spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m cqq7a::9/ffhyoth ano9.io ;/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 oftqie cfw :,8)nov v)-w 4 cm. The energy is 8.0 J at this time. The mvi-vt8f, c wow) :qe)nass is cut in half, and the 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 constant 20 N/m8qrel ,is c;fl-9iv lw)v) dc- 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 amplit )i) sdv recfl8;ivwl-cq9 ,l-ude 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 horizyg:cld9l2m ht7)r0l+ )p xda jontal, frictionless surface. The object oscillates in simple harmonic motion anrl2d xa+d9)j:l 0)ypmt hgc7ld 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 of a ha2np p22 nw5mrorizontal 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 m2 p 2pw5ra2nnenergy 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 const 8v f-5vyn;fj xxww20fant 50 N/m and set into simple harmonic m5vwj0yxf-n8v ; fxf2w otion 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 ku/m :tya,m z/r--pv9btbm w5spring of spring constant 20.0 N/m with an a ,vpau /wtty:rmb/k-5bm -z9m mplitude 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-spring system is displaced 10 cm fromk31d :gnm, eln its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass g,n 1m eldk3n: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 constant 10(.,kfi9r,txx( zwvy g N/m. The object is displacedx9xk(,iv.yrf ,( g wzt 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 alpwmt )9x nff.3;5qm 10 N/m. The object is displacedl)fmw. 59 t namp3qx;f 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/m, displaoqy g9t rv61i3dw5qia)-zqq/ ced slightly from its equilibrium position, and releas15/ z iy wqr t)63qodq-qvgai9ed. 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 oscillat;e)depr7 lx; oes at a frequency of 1.27 Hz when displaced a ;7e pd)erlx o;distance of 2.0 cm from equilibrium 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. Massd2zb ; *5gzz-v1vqcbo syts(+ 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 frebz+cv2 vd*bz5s z ( t;ysoq-g1quency 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 stretches the mx./ 3)bha uxguhzbmj*kf/ 3( spring 2.0 cm downward. The mass is then pulled an additional dis3xf/ jb(uhmb )kum.za h/3 *gxtance 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 suspendem6 z) v a4es2v4ymu(qtd on a spring. In equilibrium the mass stretches the spring 2.0 cm2 u (4 tmv)vzem46saqy downward. The mass is then pulled an additional 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 on a spring. In equilibrium the mass stre1wtdu 9lpdr7(d d4 e 3.l6zsmh+*rtfytches the spring 2.0 cm downward. The mass is then pulled anm.13l d tw+drytp4*su lz 9 h(d7fd6er 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 harmonic motion obeys the following poubwaecu s tbg-.9m)4 2sition versus time equat4u-sbw b ) 29acgute.mion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motcmjugs) pd*u;g25: 0z,-wctd u t(olgion obeys the following position versus time equatio2c mzs:t (),j5dg*dlugutwogc;p u0 -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 harmon9*3 8qv nez;l in5-c ysxzrfe-ic motion obeys the following position versus time equation: cf8 *v;qy3nzs i-lnrx59 -zee
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 theu3 7vcok.xbnn0c( yk 6 free end of a spring executes simple harmonic motion according to the equationcckb 63yxv .u(0nno7k $y = 0.50 \; \sin (18\pi \times t)$ 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 conejv/zjx tdwy 7g s c.z15q.q-+stant of 20.0 N/m oscillates on a horizontal, frictionless track. At t 5x1js.t gdq7eq-+w/jzvc .yz= 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 5gj )6m cgfv n n4pa83gwg*/jes. (a) What are its frequency and period on Earef / g*3vnj48npa j)6 ggw5mcgth?

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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 ipx9h re+3p (fmts 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 is its lengt3y1rkr0w g wq9a2sa lm0w-,gy h?

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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. What is its period on the Eai5 vd). xbrhk-d5o)xsrr -d.x vhd)o x)i5k5bsth?

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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 o-(+-nbx hzv8dpe6dg m long. What is its period on the Moon where the acceleration z+d -x8-hbe dvgo(6 npdue 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 coa+rzl7kgi53cfb x8 l/nsists of a 0.25-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilix+ckr 5 f37bagi/lz l8brium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter 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 9ororvg* . x)v20-g mass has initial angular displacement of 8.0e. It oscillates with a )vxr r9*v.gooperiod 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 aud;xqu x k,1zew *p3t) *rv(kf*nl7kk given time. The frequency of the wave is 120 Hz. What is the amplitu;k*luk7*den k u trxfpq),x1vw(z 3k*de?


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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 3ebirczv-deo,im5 n4;g d:e)given time. The frequency of the wave is 120 Hz. What is the wavelengied;cdm5n vreg4e -i )oz,: 3bth?


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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 j(4vqad1/nihbek:l 6of the wave is 120 Hz. What ivkh:n qd4l jaei6(/1 bs 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 a period of d 5uu;i(eoq2 ysbt : ege,a-e0v)jih*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 1500 Hkx)n 9ac 1c/gtz?

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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 frequency of 12 Hz and a wavel5bb7c gy,l+mx bxz+ 6hength of 3.0z7xl ,gx5 +mchb+byb6 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 freq4z* bnmel5 8 etm/ 1q)3lfx-bsy2oidruency of 12 Hzzir e2l)1ty*md5bb-4/fo 8 3mlxeqn s?

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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 travekvs qrr1wd9:(r3d 5gq ling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.00ahs0u z,o6j7 2 c,wk- nh-nipg50 kg/m is under a tension of 1350 N. Whaj67zia0h , -kngh-np2,us oc wt is the wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is under a tension of 180 N. What is (qtjn7d:h-b/(xnans fp5 qv 3a*hwa ; the velocity of propagation of transv (dhtqvx ;hp*ajb5fn- a/7n3sqn (w:aerse 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 w d kyskpna 0.6+g vj;bho9+7ehhose total mass i kg+ navo+7dp;kyb.sh0hj69es
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 faa21crmoig 46 ixed at both ends is 200 m/s. Which one of the following is not a resonant frequency ocgo4am6 r2 a1if 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 fre86up avc )+)jl9f:zx .deyi 0qo2h mskquency of 500 Hz, which one of the following frela x.)scep +f6ou:h9 mjkq yiv)0z28dquencies 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 equal segments in a standing6d 7j xyo18ukqf3g4gp wave driven at a frequency of 480 Hz. What driving frequency will set up a staj47q86 u 1oggxkpdy3f nding 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, vibr+u/mqs(p b;c yates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the stan (c/ ysq+mbpu;ding 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 i d e e:k-)aj8 m(pexew+iu;k2rs under a tension of 20 N. What should its l( ku-er+8jm :e;e) e2pawd xkiength be if its fundamental resonance frequency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string of linear mass density 2.00 g/mirg fi.y k;: ,ckkef3)cna10y and length 0.600 m when it is subjected t,kkrc:i0 .)kyaei yc1n3gf f;o 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 e 1tamjem( wwk h8-o)-dh-+fr fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standine+- h-wam1w -ftd hk8 ej)mor(g 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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