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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 process is called alrb pcy 9x*)9/n4w 4klarp49vyl)hb 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 cycles pg 0a/kfdg1ya 0er 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 motijf/n+ 3cnm ,m)d;p hagon, the maximum displacement from the equilibrium point is calle, fmg+n)m /cnd pja3;hd 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 SH +:vh l2xuvaeu bo tp30xvm( r.gl8q1b1t3 n0dM. When the mass is at its maximum displacement from equilibrium, its instav1x83v l:u a3lvd pg.h0b +(n2 r xq1ubtt0moentaneous 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(v s thq8l5 1u0g5.ugx juc0ln passes through the equilibrium position, its instantaneous l0vs1 cu8lx.gu5j(nt u50h qgvelocity

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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 displace7r qgnl*b)3h nment from equilibrium, its q n)b37l*nh grinstantaneous 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 bo /3h ub70 lcs6tzoxwzr5p.o- cbs up and down between points A and B. Where is the mass lo bl.5w zcx6z3so7c0rt-puh/ocated 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 sprinvb8 x2wdhpl:0.a yh 1kg and bobs up and down between points A and B. Where is the mass located when its 1 x:b2h80kavwp .ldyhkinetic 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 vertical5,feokbe qw7( spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a ,e7(e w5kb foqminimum?

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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 h/kh k0:d3d:e lv 9arespring and bobs up and down between points A and B. Where is the mass located when id30/: v9deh:erl kkahts 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-and-spring system produces whatnefbdww7.3 ci q1k26fz1bv54 vf:kxi effect ifcx:dvknfweq v64 1 3517wifk2z bb. 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 systemgb(dl6t 65dzv produces what effect on d6zltd6v(bg 5 the 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 39kagywjxd.zoq5xo 03d 2/mf system produces what effect on the system's mechamk053ow.z 2oa3ddg/ jx y9xfqnical 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 thei33r wbubl/k aj nd;0*ge0d2fz p59 eo end of a spring, both on Earth and on the Moon. Where is lj ge3; fun30*5d2okb9 0rzw/ aip bdethe 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-ajxojm5lp ; -ot2g;cuq(4t epggg6/:m m.2mifnd-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's mass m.q g2t(fp:i g;m5e xop6 gt ;u4/ljcmj.m2o mg-)

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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 91 i//x9h j nsbal4jhjsystem causes what kind of change in the resonant frequency of the system? (Assume no change in the system's spring const91hb/sjli/xj4h9na jant 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-spring system cause1 -xh vygn8ns2mx u a/(h3lr)is what kind of change in the resonant frequency of the system? (uh2x3vnn i1/yr8( mgaxlsh-)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 wen,gl9- q rtvp3ightless string of length L. For this system, when under3t 9prn,g- vlqgoing 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 q2s1jbqce-tx * do+ijkul:ov8 w3 1,crequired for one complete vibrati-1cile*jqc +vq2kwoxot:j 1b u38d ,son

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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. Pendulum A, 68v xvt*w)twi:9ket pd:g fn is twice as heavy as pendulumwg w,e *:)tpvft8k dvni69 tx: 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 comg gq.f5w8;fy t (zjvb;mfk8vnp g:m,9plete vibration increases by a factor kq f;wp g.nbj;tmv8, m (f9yf8gvg: 5zof

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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 cldg3da fz1g l,*27nar/ *h.t nwk3rt its length and mass are increa/w3g kc1l7. gdr nl* nzth, 3ftd*a2arsed?

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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 w7;1rn2qu 4+ruhgqpn twice the frequency of simple pendulum B. Which state2n41p+g; 7 wrnqqh urument 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 theu3 zyt;l nkqs9/fo+5j5inaa , Moon, where the acceleration of gravity is less than on Earth, the resonalns,y j /nz5 kf ua;9taqi+35ont 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 repred -0f5rkm1py i3 *sxlesents


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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 represe ; 5q0xynlz9l/lkd5k,jyt pbq 43oil.nts


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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 represenwz5pyu83e( jrzv * u5ji87uvh ts


本题所包含的其它图片:

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibration, the amplitude of vibration iscv gryshumk :0 tya;r+)6*yp0 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 maximumhm0pgwk5tk5zc : / )zk displacement of points of the wave from equilibrium is called the wave5 /km:g0ckkhzz )t5pw '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 onbzi7s-ggq sjv* . r:d) 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 time,xn t697ynzvtth7u 3x is called the wave'sxtn3nt9u67y 7tz, hxv

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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 wavelengm0)jgwmwm2lp: d, q2 nth 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 increasn cgesp.;1w(7spa tw6es. What happens to the distance between successivp.egw7a1swts ;6c(p ne 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 wavelength l and frequency ip8:v rbi *3*dzwe(sacm;qp0 f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of th 0z(sdi:3m8v abqwei* c*p r;pe 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 length7w 9z997pk fmgfkyn1-pe0t oc L, mass M, and tension T. A standing wave is set utmfpkkog09p f97c7 -1z9e yn wp. 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 undera,eexnbtc 1 )w*wa*9a tension T. The speed of a wave in the string is v. What will be the speed of a wave in the s,a c91et *x)nwbea*watring 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 undert(k 7nwz1criwuu. 2t+4 (f6cee m7jvi tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string .t(ick n jvuf17t4(7 ww2mrie e +u6zcif the length is increased to 2L, with no change in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is 1vukllu eor2 eek+5k-z 0+r1l under tension T. The speed of a wave in the string is v. What wil1k5 uoez+ek2 r 1l0relk+-vull be the speed of a wave in the string 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 wave tr; fx2 wfvr4buha)qj+q: t c7;vavels through the Earth, the relative motion between the S wave and the particlvqrw;q7 : )ub;xf+fjc vh42ates 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 through nmaeo,88nw bk**. ywn the Earth, the relative motion bnnom. ay* bw ne8w,*8ketween 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 is6cdeps82n ;b8( a 3zdfdq k:ei

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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 thinr;9rlnp r+1mfjk)sz 6 cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientat1l +; rrz spn9f6rj)mkion 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 ampl e7zw ;k7nvtq+4z/ nfw1q2uwg itudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupyw/ wwtez vqzgk 714+7nu n;qf2 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 stri3nx:h 4cex4+qmzkez o0) 1ai dng. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplihm4zeki14 )z:d+ox0 3nex caqtude 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 strin oozz fkcb (mm*49ut9)g fixed 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 frequency of tha+bpr mi 6s)nn9t string will increase by ani9ms +6 rbnp) 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 when a mass oi.6b psk*3 g; )aotxlcf 0.600 kg is suspended from it*6b ip;c3a kxol)gt s.?

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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 horizon6 4gb(zdv x,ha8f nxehkn+ 67ntal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the maa46nnbfv86gh7 ,k+ zd (henxx ss 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 ar k-yv/x5:j-g: k8b pz 1zchqwlong a horizontal, frictionless surface. The spring is initially stretc-hbwz:krpz1 8 /gcqj5x y-: vkhed 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 oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along a horizonta/t69 (gef6x*qtgag. 1gzbe da l, 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( t eq9aa/1b6gfe6*xdt gz.gg 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 undeit;u)(va g qx8kb (2morgoes SHM. It goes through 10 complete oscillations in 5.0 s. What )a 2 (g8ut;mkv oxqbi(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 free0;cxgz:mj )x g end of an ideal spring of spring constant 20 N/m with an amzgxj:m;c 0xg) plitude of 0.30 m. What is the kinetic energy 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 to a spria hj*qoe/mq qe8: m5.ipcf6m 14y,fwpng of spring constant 20 N/m along a horizontal, f16 o ma jpi qyfpm/8mf54e eq,qhw*c:.rictionless 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 wi2mb /p+mar5lwq.0rwxd 0woo+4 7 4mozw3asu w th amplitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motion m. o7w 2ld wap4/o+ obszw5rwmm+w3ur04aq0x 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/m along a horiqv.p ;y1clz/en4 7wpczontal, frictionless surface. The object oscillates in simple harmoq; .lvyp47wz1pn/ce cnic 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 sprioc+,6p9 xkkff ng of spring constant 20 N/m along a horizontal, frictionless surfackk+o9 pf,6 xfce. 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 of a horizon7q n4+n7d tkfpc)-6plj8 r5ka-u eeu xtal 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 energy7- +x k)tujnrek6lq4d p5c7ue-af8np 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 spri3-lirv,e*r/biw3l b u ng of spring constant 50 N/m and set into simpii lu3el -v/w*,r b3brle harmonic motion 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 fe, 3hn .ctzp3sorth from the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy of this vibrating masps3.nc t, ezh3s?

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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 equilib)0 xh5vqrx43v f6pee dcwq (e0rium position and released. A frequencyeq)0hw x6 c3(ve4e5dr 0qf pvx of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/m. -h2. j9 aqzn wqo6ir5gThe object is 6iqjz an59rhq .2-ogw displaced by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring cons6b8c,rti0h ie tant 10 N/m. The object i8hbtrei6i, 0 cs displaced 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 springdkf9af-d 7f1do wx r,4rwh6 0h constant 18 N/m, displaced slightly ow dfd,09hfr4fk-6 rw dax7 1hfrom its equilibrium 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 sprintj;-c +7 gc8,c 3jn7kwlpiieng. 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 atc8 nl tg+ c,pjw-7iickjn 7;3etained 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 atta- edr9dyxo1pu; 4(1 qjfsjc1zched to different springs. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrae(cy f11 jp q4u-sj;rd1oz 9dxtes 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 am*/y,de: pfc o spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down,ydmp:*ocf e/ 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 w0d*px2qqlyrd+ knh.71)zlw ;oi r:a 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. Calculate the total energy of the syste.*y+ likah2n qx7 :;p )ddr1w0lozr qwm.

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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 stretches the 6eiu ,++od81v a d0xppwa(lfp spring 2.0 cm downward. The mass is then pulled awdai 6(o81 fuvlp,p+ xpa e0d+n 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+*ypc oyu/duk*d iz2m+vs; xuu 225ky the following position versus time equation:uki*x ;+u2kuvs m+ uy2 25zd*ypodc/y
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 rw 31l mkld80zharmonic motion obeys the following position versus time equatlm8 zkwd3r 10lion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmo.powva) s, ,a tk,f7hgb9n 4;f,nd wfcnic motion obeys the following position versus time equ,kf ta,4nahw,9d og;.7nf)pb,wvfcs ation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harm+0qf xv6ll-:l vwg bxz a4z(0konic motion accordin vkx4 0lql 6b+vz gf(wx:-az0lg 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 dziar9)b pv )f o4k84;4v) gmu. 45wzfac tqojN/m oscillates on a horizontal, frictionless m4a)i;qv5jk f tuz) 9ozo4 8r 4cpwdvgafb)4.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 compl0 tw1k3obk m,tete swings in 8.0 s. (a) What are its frequency and periodottm0 k3w 1,kb 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 +3id.dirc4y +yi:htf 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 ypz)gdy 7/x .5jia/ q2wa:isi3oz 1ap 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 is 1.0 m long. What is its period,o cdwsr8h s), on the Eart,w) ossdhc ,r8h?

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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 6wuu:x:m j-*zfhtv ; w7 a9gbllong. What is its period on the Moon where the acceleratuzw*f wa6:l9vm 7u- b h:jtx;gion 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 mass attk3 uf2gtga(j,tsxy(an2t u ,9ached to a massless string. When the mass ink3t as(,t,u x yu9f2 g2ga(tjs 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 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 hat5+.r cmy memgcc, x3ra(j.dxg0bz 3 /s initial angular displacement of 8.0rcm/..exgmc3y z+ajg (mc3db xt r,05e. 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. :wrz0hwsgm ;4 The frequency of the wave is 120 Hz. What is the ampli:wg z4hmsw;r0 tude?


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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. The d;f w 5.zpc0whj; gp)yfrequency of the wave is 120 Hzh ) .y0p ;zjdgwwfcp5;. 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 gvm3ltnl:a z- sj * *ghq.+pta9iven time. The frequency of the wave is 120 Hz. Whq :hjt*3+9tsp m.z-lv*aanl gat 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 a period of 6.03.ud, awhr g8j0 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 15g6vdv0,rk( .ycc9;i fbr v.pp00 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 wave;61:r ;fnqqgo:e-tj;i wseq plength of 3.0 m?-q1i:6fne gtqsr;p j;;wq :eo

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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 aa-k5li,:u15e4il outcrly,u wavelength of 3.0 m and a frequency of ,-5i i:lruuue1a5lk ty4 ,ocl 12 Hz?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequencyes wkqe/ 8w.d4 of a 2.5 m wave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kgp obqz zzyv9 j:)+62hu/m is under a tension of 1350 N. Whv26 9pu bjoyqz:)hz +zat 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 f/r*hotey3;l N. What is the velocity of propagation of transverse wavesfeh;lt*ry /o 3 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 m7zsz+0d ir-get6 o6c1 l-bohzk)re+v is traveling down a 500 m long wire whose totazvorsb 0+d61)6e izlg7kzc-oth r -+el mass 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 odc(mxq0sa+3-fto egl 6 hq.+c b5uxj 7f a transverse wave on a 2.0-m long string fixed at both ends is 200a gx- q +b6m(ud.3 jc+oc7s5xfqlth0e m/s. Which one of 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 ax iya7 jn3x26b fundamental frequency of 500 Hz, which one of the folloj 3axxi2yn b67wing 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 four equal segments in a standing wavqrs /m-a.4efh;. oj/p dd td)je driven at a frequency of 480 Hz. What driving freqm j pt.a dd-heo/drsf jq/4;.)uency 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 both1wj5 rt8 +otr. lik- d)te*eyo ends, vibrates at a frequency of 12 Hz with a standing transve8.lert -tw reio dy1oj+)5tk*rse wave pattern containing 3 loops. What 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. ),d by nra/l-il6(cynWhat should its length be if its fu,y)d/n6nl b ria-yc l(ndamental 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 gw 9t4 5qzyoho8/m and length 0.600 m when it is subjected to tension of 50.0hw 54zyoqot89 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 vibrat;txq1oy (r dpvbi+a(qya8 ) l(es at a frequency of 85 Hz, a standing wave with five loops is fo;iyx(b(oqqlyat1 v)ar8+d(p rmed.
(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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