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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 called t4-h e7cn7huy4 :z wvacxl/.g zhe

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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 per unit qr3 ugzwfu xf9zj;6 -)u2x: -x,to aestime is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from the equilib74e 6+uohcdtjrium point is cj7h6o eucd 4t+alled 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 unve5ge fc yx(5d lz8jcyo92:.r dergoes SHM. When the mass is at its maximum displacement from equilibrium,9r yd8v5o.cgf:5z2x jlcee( y its instantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring uz8.tdw 91+qkjgiy*o .z* e skondergoes SHM. When the mass passes through the equilibrium position, its instantaneous velokd .wjt1zoqg9yi se + z8k*o*.city

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes 8p9 6+1esf1k d0b3okqdznybk SHM. When the mass is at maximum displacement from equilibrium, its instantaneous accelerati1bd+03qz 96 bkps d18yfk nkeoon

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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)61rd n4wq byn89;crnz*igodown between points A and B. Where is the mass locatewn;4rz dorn ig)y9ncbdq6 8* 1d 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 and bobs up and down between poi; gmi9em7r/ ss)p6uw ints A and B. Where is the mass located when it6u)9 7gsr; p/mmsiweis 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 sp yx j:ek0brso- l*7u,tii*2z pring and bobs up and down between points A and B. Where is thj0,ri2t *lxsi :*yup -ebk 7oze mass located 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 and bobs up and down be wkr,s5r*kc8f tween points A and B. Where is the mass located when its potential energy is a maxim,srf8*k w kr5cum?

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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 systihg st48 4*lruem produces what effect on the g*4ls tr4uh8i system's mechanical energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-spring system produces whatso qo90eau- uqr9/e 2w effect on the ase2eow9ur0 9 qo q/u-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 vibrati6 dp e/4nn;tllng mass-and-spring system produces what effect on the system's mechanical enenl;p 4tle/dn6rgy?

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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. Where m: gcu:qyf1/lis the periodfq1 umyl/g: :c 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 +058 o5x(zcq iuwbixfof change in the resonant frequency of thef8x(bio i5x+cwz0qu5 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 vb:m: wn g/g9xa mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assumeg wb9x::m ng/v 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 afu/hin4f+ qb- trxf3/u*z/bu mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no other changes in the systu-rf*tq4 /uufz b/ +h3b/xnfiem.)

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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 weight1 y:umxk jmat x1qjeh09 cc994less string of length L. For this system, when undergoing small os9ut cxmqjx1c1a9 0mey 9k :j4hcillations

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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 fot abmvl,( dy7rlb(3ilc2) c4za d13fwr one complete vibrat3, yz(w7342ldibtrcb1d v lf aa)m(cl ion

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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 yo7v1qs7:(d kjt x zf*B are 3.0 m long. The period of A is T. Pendulum A is twice asstyoj v7 qdz7k 1xf*(: heavy as pendulum 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 vibrafbxjy9 a, ;2q vydkv..tion , .y aq ;.2xvyvfkjbd9increases 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 frsfe .8(p;mioj6* fszvbkke2koqt2.8equency if both its length and mass are incz *2 bosok;k8fjskpv (.mi.eef826 qtreased?

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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 frequencysl- 6dwu) wziryl; b,sl2 *+pix:amh0 of simple pendulum B. Whicmxw*iadswll;6,2:zy0b +)l hus- rpih statement is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the accel 4 tlzx4e aqbet nr-pl:6x*(6teration of gravity is less ttp:qezbl a4(r -x4nx *66 etlthan 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 repqq at7ad6q2smb ff/sivc)bng0v*, 7 3 resents


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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 representpqd1lr, t*eegx0: +dd s


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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 rei4rkj q6 ae9x9presents


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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 is found to depend on: -fja dnvf j0rfd3zds4s;0: a 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 maximu1 ahuk+o+xt/ nm displacement of points of the wave from equilibrium is called the wave'sano+/h+t1x uk

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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)+rv5h bzyuedf-4iiv3+ x o2u 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 of18 o. k fn/mgd-j(wzpp a wave passing a point per unit time is called the wave'(.8jz okfn1gpmd/-p ws

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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 waveleng7p) jevj;fb2 sth 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 wavw2/khyurw0mlw 2f b 4p;-x/v ke increases. What happens to the distance between successive crests if the speed remains cons m/l2 upx-wwvhk2;r/ykb4wf0 tant?

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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 freque 253 ytkrag+ ue-,gjmqncy f. A second wave on the same string has wavelength 2l and ,yg-3atru52kegjq m +travels with the same velocity. What is the frequency of the second wave?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a strin4 zvunj4,v4pv1x2rsn g of length L, mass M, and tension T. A standing wave is set up. W14v j4 v24nzvnu,psx rhich 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 t q6gwjnvs.da ( o:q7+ oy.2mqahe string is v. What will be the speed of a wave in the string if the mass of the awq.sdj(avyqq7 .o:2ngo6 m+ 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 o+5mn/te dnm:l ntan * x):0trlength L is under tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the length is increased to 2L, wit n tl* /n red+xaomtnm5:)n0:th 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 undwh(fbprrbl-8s 2o 2+ ier tension T. The speed of a wave in the string is v. What will be the speed of a wave in the stri+i28 wb-hforp rl2b( sng 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 ab3u)vjp 18fao transverse wave. As an S wave travels through the Earth, the relative motion between the S wave p8v3fb)1aujo 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 wav.z+b*q h- 8qmhm/x)j n4b;2bmgqxcqe e is a longitudinal wave. As a P wave travels through the Earth, th2q b8m4h* xmxje- qgq);/cbzm+q.hnb e 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 wave isddew;i)hh* 9 z

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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 thesr 6tkh(hh5q8 right along a thin cord reaches a discontinuity where the ropeq85 (hkrh6 sth becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positive amplitf1/,uywln1 zo.nd )qludes pass each other on a string, one is traveling towa.1znl,l d /1wfnu)o yqrd the right and the other toward the left. At the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each 58g:ir0 a vytn-kazz 0other on a string. The one traveling toward the right has a positive amplitude, 05-z rt:yn0avzak8ig while the one traveling toward the left has an equal 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, e ; 7toms(k4apsuch as a string 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 frequ*mk +a(2lkvi1oqs o: bency of that s:q+k1v l 2o*ibs( oakmtring 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 s8go0salm0 k-ctretches 2.00 cm when a mass of 0.600sg8 k0a0 olcm- 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 of spring constant 60 N/m along a hor5uouzx/0ke6qwe jrx) n*5 i1nizontal, frictionless surface. The spring is initially st)nee5 xxqj/iwzu65k1o*nr0 uretched 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 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 horizontal, fro:; ( xruj3hgyictionless surface. The spring is initially stretched by a force ofuj:(hg;yo 3xr 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 wq lh,q 341+nhq2a*z6koiixi 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 xl34hqqhi 1iw+k2qan 6*,zoigo. 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 undehbvj .i//ou v2rgoes SHM. It goes through 10 complete oscillations in 5.0 s. What is the per .j/uv obh/i2viod?

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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 spring of sprinpyhjm3xe 0mod:w, :-w g 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 m heo:p- :xdwym jw,30position?

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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 5wj*/c z1 r/vxhmw: ndj;dr6zspring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a; vrmwnjczh6/ d /r1w*d :zxj5 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 i*z8fuk u(1 y;zpqxo ,zs 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of8qup u1kz(x , f;z*yzo 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 horizoch)jx **cpy5c e+4l 3t,arzc wntal, 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 amplitude of vibration?txj4 *chccpr) z*5 c3e,a+lwy

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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 8cnc/yp. k; zayd3y5fN/m along a horizontal, frictionless surface. The z5c/;p.83 fckyyyn adobject 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 horizontal spring4l)0 *wyqi 4h jp1qkls y*x ri*.mogw7)xi o*y of spring constant 50 N/m anlq*syw 4yqm ihlg.p 0r xyw)7koj*oi14)*xi*d set into simple harmonic motion 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 encu 3g)jya. r64q*srmnd 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 total mechan)ryq cm 3nas *r4gju6.ical 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 frew-,x lq 3wm 7wjybtas-6osy x5y-pd0;k+a tj/e 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 vibra/37xya 5d+-- jyyo0jqtwksw-sat xmp; 6b,lwting 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 poo1uy4 u/u, dxcsition and released. A frequency of 4.0 Hz is observed. What frequen,c1 yo4 /uuudxcy 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 10gml95h7j rmkq 2 7 nvig:)uf*f N/m. The object is displlfr2n gvk5mjuq hmf:9gi)7 * 7aced 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 10 N/m. The objb4 5 oli3-o izqso.w.kect is3 owlbo-4ziks .5q.io 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 spring constant 18 N/m, disps9m8.e u2e hbejv8s b m*+cgw.laced slightly from its e9*vmb emjewe 2usch s.g+ 8.b8quilibrium position, and released. What is the frequency of its vibration?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillates at0ju;;u,.nv vlrg -wq6zn )nxq a frequency of 1.27 Hz when displaced a distance of 2.0 cmgn, n -u)q;xqzr lnv;vw .uj60 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. Mass A vibrates wi5tk2 z8br 3(ext+ oaecth amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with a 52x rc(tz +oet3bke8amplitude 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. 7.t*b - jl*a;)anmxpmnbx)q bIn 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. bmxa7 n*a. q;x*n ) )-lptjmbb 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 equili j8o1keb-: rs+z+wox oe49lkb brium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance r+jb -k:z+1 xoko9oe4ws b el8of 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 stretches36g )2szs*)fmxl oylt the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equat2o)6y )gs3*flt zx lsmion 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 position m)wcae a: 0ak , 1ue,,ll,knxpversus time equatiolx:k1 ne mwp l,,a),0c,ekaaun:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 pos3j,s(blmta j/ ition versus time equatiojat3(/j lm, bsn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motionwv3uj//wdu)9 sftr* yfsjon5cr9 s(; obeys the following position versus time equatiy9 so *c ujrftj )dsvw39nr usw5;/(/fon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 end8b ft*8g csbpxu 6;(bu)xo 1ur of a spring executes simple harmonic motion according to the equation bxxou1b s86 )(*bugrfpu8ct; $y = 0.50 \; \sin (18\pi \times t)$ 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 foqn+m9ae3 e*8 :-/kgkumgyh k2ajr .pnrce 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. (Thg:+9e2qpm ay8n.k-r mg/j3ha* ekknu at 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 sfpfq.f/1 t+. bn de-ap. (a) What are its frequency and period one.+-p bqtfdn a./ffp1 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 l/+ 9dyytgd ;s/,3xoykmjf b 0iong. What is its period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Earth. What is its length?2h( 6ei*a x8 s3ptzus y5,ovic

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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 gran1ei;yhpg3le6c/;hi h3zze+y dfather clock is 1.0 m long. What is its period on the Earth +1 zg6eeyziih h/;lh3e3;cy p?

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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 ce z c.pwhyq31r8rr0-r5ew-b d lock is 1.0 m long. What is its period on the Moon wcz1.rpe3 h8-0rww5r b -reqdyhere the acceleration 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 attached to a massless stn fs8s)yg **n /qovi2aring. When the mass is displaced slightly from its equilibrium positiasqn*y* o/f8nv2igs)on 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 consisj4* (,hgwl wu/4xlsa eting of a 20-g mass has initial angular displacement of 8.0e. It oscillates with a period osgae hw /lw jl*,(x44uf 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" 0k; tf sea/ z8,skr,dwof a wave at a given time. The frequency of the wave is 120 Hz. Whatfa/dk,z w,tk se0sr8 ; 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 btn6wn s(3 gl0/ -+ dfticsb+a6*ieaya wave at a given time. The frequency of the wave is 120 Hb3bed/6 la y cisni wg-0+*t6t+ afn(sz. 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 given time. The frequency of 3i7ymj, z9;i*d +dyto p1vbuc the wave is 120 Hz. What is the wave spy 1,*ddu+jv39yi7mcptb ;iz oeed?


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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 a8wu xobusyob-m50ad.vc 6 6 n lf1j/u: 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 15gnjk6gh5ai ypn53. 2jops*i(00 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 frequenvy22 xc-hq 7ahcy of 12 Hz and a wavelength of 3.0 m ahqcyx7h2-2v?

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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 wa.kyfw,3nt/7 t jm-o/i mk-razve that has a wavelength of 3.0 m and a frequency of 1jynw/.t/rmk ,7if--zk mo a t32 Hz?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a 2.5 m wave traveling at)u as dl5hxt6x(o l*q/ 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 uv he4fyo i l94b :xb:18hcj*sgnder a tension of 1350 N. l4fj8cyvb*4ei :x 1hg 9sh:b o What 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/mjv3f 18 vjn)xu is under a tension of 180 N. What is the velocity of propagation of transvevf 31ujvxj )n8rse 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 whoejs85 wp hig94za;cu(yi-ep(se tote5u a czp8j ep4yi(;9gs-i(w hal 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 of a transverse wave on a 2.0-m long s iuw8ro94 oprlan7u.(tring fixed at bon9u( r.l uwoip78o 4arth ends is 200 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 a fundamental frequenc5 6uamw8kz s/zy of 500 Hz, which one of the following frequencies can set the string intom8u6a zksz5 w/ 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 kppi88b8 9 lrv0xd2m cwave dric88 28pird m 0bkp9vxlven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrates ath lqpvs2.eop )nb. qj;1h;wr. a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pwp; oq.q.pv)h1 ;.eb2lnsh jrattern 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. Wh8tbbp-rz e8k3at should its lengt8bet-3 kzpbr 8h 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 n cm55aufkd;7c(3 ww 6k9m vrnmass density 2.00 g/m and length 0.600 m when it is subjected to tenrfnk dw6 55cma c k3(vnwmu;79sion 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 fprj4x 9ffg() )yvc2g rrequency of 85 Hz, a rxgr )c(gf942jypv) fstanding 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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