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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 cal jy1j+qkpt sy/ oy*m -n:6y:wgled 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 cy kam:)j.ov;xvcf ;+mapqz-. mcles 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 du0-ywby ) y1j.3h2otoxninl +isplacement from the equilibrium point is calledo0j )-xn hty+w.iu yo ln1by32 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 y3 jvjk;.k .gdits maximum displacement from equilibrium, its instantaneous velo.g.j 3v;jdykkcity

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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 pass3 f8d+ej+2laek+k h ebes through the equilibrium position, its instantaneof+j3kek +8hb l d+aee2us 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 dis7hzu ls,4c 1hrplacement from equilibrium, its instantaneous accelerath s1l4h7zurc ,ion

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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 a3,k9gtnf :0nuwupr j)ijte-, vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a mit, 0wi tu:9fn) neu-prg jkj,3nimum?

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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 up58hgki u*o-i .u 3ntck and down between points A and B. Where is the mass located when its kinetic energy is a 5i n k-hugui* t.83cokmaximum?

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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 povwu mqp.c+*ohb.c v, +* .fseiints A and B. Where is the mass located when its potential energy is a+h*qfi. b ..o ,vsup*wmecv+c minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and dk;h8fyb9hok.)8s yp wown between points A and B. Where is the mass located when its potent.9w by8pfk8 hs)yhko; ial 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 maxcrs.*t r91jvs;g,vde +hg4 kss-and-spring system produces what effect on the system's mechanical eneh gvevr9g;* s jx,dt4r +.sc1krgy?

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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 vibrxjki:(e6sy m/x*e9 m bxi7s6va m j)y*ating mass-and-spring system produces what effect on the system's me 9s/)b* j7 xevx:my*js6ea 6xkii( mymchanical 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 conswfe ,*yz:n v 1evt.ox5tant of a vibrating mass-and-spring system produces what effect on the system's mechanw5tex v:*nez1 f,.yvo ical 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 Moon. Whr4g x;e7tt yn+-hn.nvere is the period the greatest.4ngnv 7yernx;t-+t h?

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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-sp)f smcf7pm mrk4s*. a,ring system causes what kind of change in the resonant frequency of the system? (Aska.4m,f s crp*sm)m 7fsume 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-spring system causes lm haj(rzyv)fb nvz0 pw0581 ,what kind of change in the resonantvw1 ny0zfl5j(ar ,hv p0)8mbz 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 amplitude of a mass-and-sj;b;r//s vbf ym lmc( l6z(;pgpring system causes what kind of change in the resonant mby zjll(r;(fsb;6 ; g/pc/vmfrequency 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 weightlesg7yk7cev o(r0s string of length (r07c go ekvy7L. 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 simple pendulum is trqm:6tv onz k 37vdrbr+ (8l,hyipled, the time required for one complete th+6kd7mo y(3vr:bzrq8 n vl,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 long. The period of A is rq*,l 6n svc0dT. Pendulum A is twice as heavy as pendulum B. What is the periodd,nc 0lqr6 *sv 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 penduljne 2va +x9;gfum is tripled, the time for one complete vibration increases by a faxv ;2a9+efgnjctor 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 penduuxq1 7x /dg5yzlum's frequency if both its length and mass are increaux qgy1x/7d 5zsed?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swine p5e70 q6; ,e fr g0uvdchugbebcve2x:f-d;-gs back and forth at twice the frequency of simple pendulum B. Which statemen07 cce fp: ueu d 652e-0;bfbhr dvv,g;geqx-et 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 the acceleru4, 3i ligm4lhation of gravity is less than on Earth, the resonant frequency of the pendulum will,gh3im4 l4lu i

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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 repr)c8 u8 2r+(. ufnqjxbgc dder7esents


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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 ru psf /)l(7 4fpgya kft;ry:.bepresents


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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 rep*hu l 0*ri7me6av,gnkresents


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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, trft4 a2xt g6h a(7h-yuhe 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 displacemk(cewre6tc3 2y)d niv78pz .rent of points of the wave from equilibrium is calcyr v( p2 t rdw687.)3cieknzeled 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 cresl k(1pf):ukf jts 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 p, ui7 ji3q2kl nhr zrz(l1k3z)er unit time is called the wave'k i3zurkzlih j(l3nqz271)r,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 waveleng5 /x/f buyv/ cgy;mf2dth 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. What happens t.4o3;ynvt f0xdqbm f3j 5+;yst ow 1ixo the distance between successive 5 yv ;jmxs+o.yw4dtfqo ; 0if 3xbtn31crests 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 warl 5+30zfc oquvelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity03lcfquor+5z . 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 ws(- bpcid*m ,0yui 7pfwg6ut2ave on a string of length L, mass M, and tension T. A standing wave is set up. Wuc76y*ubd i(p s -0mpit2f, wghich 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 lengtzza ;ste *rw54w d1rv,h L is under tension T. The speed of a wave in the string is v. What will be the speed of a wav *ds,1r 5azv;rt4wzew e 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 pf*qf-yf;i1c5phue8 pph8k/of a wave in the string is v. What will be f/;euf 85y pfc8p-ip kpqh1*hthe speed 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 lenapw:rak43rz 6(hqo h7gth 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 tension is increased to 7hr 3a 4zpro:aq6 kh(w2T?

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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 f jrvic;x9.s7kyzo s* xi;u0. transverse wave. As an S wave travels through the Earth, the relative mk9i i.y;o0x.rvsu jc ;f*sx 7zotion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a 23kc:z l5tpqq lb-* lwlti:r -longitudinal wave. As a P wave travels through the Earth, the relative motion between the P wave: clpqll-r q3iz: t*kwbtl-25 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 wav-xd8m m ;me r(:d6+ahqlia, see 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 txthkk3t2u5 /nsg)rp:b( .i thbt(9 j vhe right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is t h(t ntkj2tbx (s/3uvbhp9ki. 5rg:)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 other on a strinu185sj lue 5suzx+i 7rza6tg4g, one isa1 x8+ zezi6g4rs5u7uj tl 5su 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 el/cs e9vvcll,)h44 3gqjl j+ xach other 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 point that they occupy the same regiovsjgx3 e,4/ 4)lj9+hclvll cqn 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 botkwnkr (6u3f s6h 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 fr6 0dmtx7n 3ophhp9y--5b br ruequency of that stp90t6- -35h ybnxhdr ruop7bmring will 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 constant of a spring that stretches 2.00 cm whenv r 87rrbix7).o:pfj)qogd+v.q +ic p a mass of 0.600 kg is suspended from : b f))q 7v7opiirr..+vpdoq 8gxcj+rit?

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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/m along a horizontal wah kj v))4h1fp*fp.ogoe2(t, 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 po.2(tf4o1gfp vjap ekwh)h )* osition 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 tmb)nbb.ywbhcz:-:zjksq. 3( o a spring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass()b3.yh cqsm.b:k:-bzb zw j n 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 spring const 0x zvb e3k.3u:wu2x yae*dgf+ant 60 N/m along a horizontal, frictionless surface. The *y.bzv:a3dw e 2ug x3+xeuf k0spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the frequency of oscillation?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. It goes throuzccgi*3 5h88h 5ncpq q+-bqyi gh 10 complete oscillations in 5.0 s. What is5biqyn-z+3qih8 c*5hqcg cp8 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 ideal sprl8a7qy;odye(qf( r 3cio-. :xuq,zpbing 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 position?c(pe -br. fo qzy;7u :a(3,qqid8 ylox

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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 spri 48ik.y zwft(2fjpz;ing constant 20 N/m along a horizontal, frictionles8yz i fipk2tf(4w; jz.s 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 8.0 J at this g- jldi9v.ia 9l4 wmh:time. The mass is cut in half, 4d m:9ahvi -9ij.lgw land 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/hel/ +-( xmjg*cil tu+m along a horizontal, frictionless surface. The object oscillates in mc (-+ l/lx*ge+ju hitsimple 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 7yow u)ccvi.xjx 5r +5spring 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/s at the equilibrium position.ujv5ry ic+. w7oxc) x5 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 thvbrm*qh 0*n12kt b.2 (drfg fte 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 tota b2* 0kt.g*qrtff 2mrdbhv1 (nl 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 spw(zeenmuwl p(b25 0s*ring constant 50 N/m and set into simple harmonic motion with a2eus*((w emwp5 lznb0n amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring of spr 5dx81evx/ o/8kfsmgring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic /xek 1 /ov5xg sm8d8frenergy 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 pr8andeh21 8 lwpe/f* qosition and releas218whnar8q*/f lpde e ed. A frequency 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/,b b7ux:hyj.cad r4l to a spring of spring constant 10 N/m. The object i j:clybdb,a/uxrh7 4.s 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:5ngiwz4lzh c0)c /pz spring constant 10 N/m. The object is displaced b4 p5wh /z0gi:n czc)lzy
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 s: w4x)srphyc 0djsh4 ;pring constant 18 N/m, displaced slightly from its equilibrium position, and released. What)h;p xhr: 4scyw0 j4sd 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. 9/m u61cwcye: 5x pkhs It 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 attmcc9 h5 :xk1ey6/ups wained 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 vibr- -i o g8)b,xp/i3b70txtt6ibtq ba jqates 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 of 16 Hz. How does the maximum speed of A compare to the maximum speed /pq )6tiii--tab3, xbxt0 bb78oqjgt 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 dggqu*d2wt8 r 99jq0ron a spring. In equilibrium the mass stretches the springt9*qq rg29uwd08 r gdj 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 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 stretches thvaht 8l,ssmz +) vm.m,e spring 2.0 mavsh8l,mm+t)s, vz .cm 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 equiliv)zc (e,)tbva brium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released fro()vt b, ze)acvm 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 ;zecn n2*gy+ax9ns2 b following position versus time equationb ;sna+z2 ye 2*cnnxg9:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 timtw* ued8 -*ber0a3re:d h)gci e equation8 e*rwbdd:ega3h e0) -t urci*:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obeysab*kuesd-;ypvo x) r.(4jmk : the following position versus time equation j eubx4s-v*;my: d)k k(.oarp:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 moy2r7wxye da9 2tion accordi 729aweydy 2xrng 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 wit3f6o q5nvf js6(egq+kh a force constant of 20.0 N/m oscillates on a hori6 6vq5o(gf jsnk qf3+ezontal, 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. h (/*5i5yy g*fyv ecef(a) What are its frequency and perio * 5 vihye/ce5(yyf*gfd 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. Whiygl1d(5pq )8.b dqnc ub9 3cgat 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 on Earth. What is-7uj+i:ioiiu7 ((job(:8 qo q crocfu 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 1vlv rr0ag 2i-(c3 /)c+ffbsig .0 m long. What is its period on the Earthgvbi3fa)v2i- r cc+g f/0(lsr?

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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 grandfatho-su krzam mkt u+4.(9er clock is 1.0 m long. What is its period on the Moon where the acceleratu m+.t4rm9u- aozkks(ion 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-kg spherical map92 3b/fn mq**sp+ mud gg4k*tw/j mylo w8dg4ss 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 resulted if a 0.50-kg mass (same diameter sphere) had been pmyg dg 44*9 m lsdt3uo*mf+/pjgn8*w2kb/wq attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initial angular displacement ofb)zg m5 jil cqsj/0 j.,mir1.s 8.05g mi/jzs 1jmlq0cr.), jsbi. e. 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" of a wave at a given time. The frequency ofuhf:d3;gngz8 4f4y ss the wave gs8:3fy 4fduh ;4sgz nis 120 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 givet;ya56y w s4qhn time. The frequency of the wave is 120 Hz. What is tha;hy4yt5qw s6e 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 r.; l7cu7tbb: qx id miv.(9una wave at a given time. The frequency of the wave is 120 Hz. What is the wave sbu ;(uvb9ldm7 : .i7rqxnt.icpeed?


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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 ehkht lc: w9sq1/u85m 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 fregfcit;m 3 vi37quency 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 frequency of 12 Hz and a wavelengthm*f4 e 3+odd+lu w,q h.vks4a0ke+zff of 3.0 m?4de,k qfla40fus +do+3h*wz+ vk.mf e

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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 wav-5j p0j14oizvtbfg h:elength of 3.0 m and a frequency of 12 Hz?-ihj bz: tog01j f5v4p

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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 a:(z bx./7sk,ifa ssh :wxr *j o3,xx0jad0sfbt 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 un hed6:2unp5qe:mvbmm /i5p, jder a tension of 1350 N. What is the wave spe52j6 dhppb:/5:e eqimm, mu vned?

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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 vel nbyb on7rl.ucndyt 43ib-956sqb k;9ocity o 9rn-b bi.nqyy to6nbb7 9;5 4cdsul3kf propagation 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 dout+nwlb ui(r 0otk 4))wn a 500 m long wire whose total mass iso (klt0b) )iut4+ wurn
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 o 8lavd ;ldfwdbr ky83v,)m x63n a 2.0-m long string fixed at both ends is 200 m/s. Which one rl; v vyfkb3dw88,d36x a)dmlof the following 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 frequency of 500 Hz, which one of the fjv9m ;n6cbv 5dollowin j9;mcd6vnvb5 g frequencies 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 ucaq phs spt.z:w nr63i0.nvi+h5)u 4four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will na53). ni pu4h:6zp0 csh.qusr+ivwt set up a standing wave with five equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrates at a frequency of 12 Hz with a tjf2 +., ajij 1vnec3estanding transverse wave pattern containing 3 loops. Whatc .ji, 3af2j t+neev1j frequency is needed if 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 is under a tension of 20 N. 9rz;tc , )vnj2 +gxvti;av0 yok07j tiWhat should its length be if its fundamental resonance frequency is 22ivjgv c20xrv,) n a7+y;ito z;9ttk0j0 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 rx/: x + f:tgbct,i2geq vnk2;a string of linear mass density 2.00 g/m and length 0.600 m when i:;xc v nk/22+qr:gfbgxt, etit 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 vibrates at a v qi, ti+d6ty51iula.frequency of 85 Hz, a standinudv5ti.al +16i ,itqy 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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