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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: 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 called5, okk*3p rokv 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 cycles66/fbvcs 7dr z-dx1al*ox z8f9qob7* qn lpx/ 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 displacement j qy,.joll 61g xo+b5/vjhng0from the equilibrium point is ca/1h.b ll ,g+gyj nvjxoq50o6jlled 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 its maximum di3hgcj7 bmd b)+ag1m( gsplacement from equilibrium, its instantaneous velocity+mgcj13(bh b a)gm7d g

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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 SH 61cwj6qvv0lxxz p5(t M. When the mass passes through the equilibrium posixvtzlx5(v1cwj 6 0p 6qtion, 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. xr .oorr4ts 23ko lgi(5/ ftq9nzn;-qWhen the mass is at maximum displacement from equilibrium, itt(o4.f9qqk i2 3s oxr or;tlgznnr 5/-s 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 ver4(mvotz1sz vkuxy yv(1 ,5ue0tical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy i(1v5 e, tzvuvy(0s1k mxzou4ys 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 d 1sgutou5t 5o+kk 0du9k 9*tpdown between points A and B. Where is the mass located when its kinetic energy isk ouu*pdtt1t sgko09d+ uk595 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 spring and bobs up andeu9 ,aok v-vs+ down between points A and B. Where is the mass located when its potential energy ie ku+osvav,-9 s 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 dowo utnl2.6t qg2n between points A and B. Where is the mass located when its potential ene26ogut n2.lqtrgy 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 wha5 h mj;uvdqu( 7dte*7lt effect on the system'm5h7u q*ddl7jvtu(e; 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 what effkin6;e87zds wect on the s6d;esn7zw 8i kystem'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 mass2o,*r5jzz4zwtv-ijpe(c f v. -and-spring system produces what effectz v5tp, jej4 fzori*-(w2 c.vz on the system's mechanical 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. Wot2c+ :p3btj*yle yp1pa 0a1 yhere is the period the greateppte *ao1a+ct j 2 yyp1:bl30yst?

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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-a/ ysfs02jj4p*vzgoxt7 2t )slnd-spring system causes what kind of change in the resonant frequency of the systegv2j20 yf/t4)zos jt xsp*7slm? (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-spring system causes what kind of ch(kk/(; fk5.m4pxqviufh bld4ange in the resonant frequency of the slvk.(4/; fpq5hi df (4b kxukmystem? (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 6:bum o:lno2 5mas7gomass-and-spring system causes what kind of change in the resonant frequency of the sys2os m n6u:l5oa:om7gbtem? (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 consist:) ldd;*hll dns of a mass M attached to a weightless string of length L. Fo:)lh*;d lndd lr 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 tripled, the time required for ;uj;rlm)nh ih,iez1 5one complete vibrajml5e ;ii1n);uzr,hh tion

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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 perk,la8s yo9.k 4/d gkaniod of A is T. Pendulum A is twice as heavy as pendulum B. What yl,sn k.ak d/k4go9a8is 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 vibr( ms5s adi,+ 6jiiz2 fhnv:i8zation increases by a faa,d:i(h+ i n jzsi26zi8s vfm5ctor 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 pendur(bt ro8eal ns;z*7q* lum's frequency if both its length and mass are increotr8bq enzr lsa*(7 ;*ased?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swinm 5efz142ail xgs back and forth at twice the frequency of simple pendulum B. Which stat15 eflzmi2ax4 ement 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 l0jrbhz-vx 4,jjw: p k 59xkl6acceleration of gravity is less than on Earth, 9h x6p0bj 5-j :kjk4rzlxlv,wthe 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 repr:t iv4h ieul-tl-u( y2esents


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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 represenr tsxa af5(7t6ts


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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. 11-1fq:5w diyp5. c represents


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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 denrvjt396a6b t pend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement :yj.htn.7 e:jmr1zv 6ul l u,hof points of the wave from equilibrium is callej.1lhrt 6 u:e:7 lzyv.mjh,und 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 crests on a wave is called the wave's*rybr zgju+/az d.s,rw yp95 +

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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 is called the wa- fkupf3dmiw ;+r/yqr zn5 )q)ve') -nmidru ;qq+ff3z w/p5yr )ks

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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 wavex l3xx/w/ a39lny 2,k,hx isbr'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 to the distance between successtfpw 57 rk8rkczv* ymu8:g- ;give crests if the speed :vwmt8 r ;ug-r*p857fkgzkcy 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 f. A second 9wb)to ug alp)gfsb5 0o80ml+w8)bw vwave on the same string has wavelength 2l and travels with ww)tog )vm09ul 5f8aplb08bbg+) swothe 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 string of length L, mass 8 8 hdkjee,s)wM, and tension T. A standing wave is set up. Whic h)k w8je8esd,h 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 ;go kmi1/adr/qy 0n /nin the string is v. What will be the speed of a wave in the string if the mass of the string is increased to 2m, withn; ag/ni1d /ykq/0mor no change in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wavelk s*zy: uq2)p c.wh+a in the string is v. What wl:)zpwsh2a*kc qu y. +ill be the 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 length L is under tension T. The scbb6fg pvn* 2*peed of a wave in the string is v. What will be the speed of a wave in the string if the tension is increased tn*p*2bfgc b 6vo 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 lev:-wg :z7y;:pyg zn m 9p-luwave. As an S wave travels through the Earth, the relative motion between the S wave and ng w ell --u:v;z9ppy:mz7yg :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 ye5nbhpdh :p9yo4g;* z2qw4f is a longitudinal wave. As a P wave travels through the Eh2bo4 ; wfy5qyzp:4p *geh9ndarth, the relative motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wavew.*xhg5 8h lp5cbi7uy 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 the right along a thin cot e2tgv i1tvs vp)m+ib7*;hw+ rd reaches a discontinuity where t h1);imivw+ stbt7*vet+ pgv2he rope 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 pes kd0/*in x/qositive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same region of space at thx/ qie dk0*s/ne 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 o*o z y2ept7t8xmk .m4right has a positive ampl ym8zp47kx *2emtt.oo itude, 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, such as a string fixe5v8dlj9bgjhtlgqtv3 ; ;ys07; dh lz5d 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 viol uju)m0;owa5 xpw9 jk hxp;;8 gz 9/8y0njegkvin string, the fundamental frequency of that stringa8) w5p jj0 gv;ehzp 9unu8/wx;m9y; kokxj g0 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 k x .6:qadiz-vthat stretches 2.00 cm when a mass of 0.600 -i.aq6k:xzdvkg 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 horizoki iend*h ux5;18f*ngr6h8 wwtab 3)c ntal, frictionless surface. The s8k w*i t*8chdu6nibxw5a h;g3n1e r)f pring 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 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 sprin)nw xl6j* /jlpg constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the period ojl6*wj)nxpl/ f 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 alongxh95cui j7.aq a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N xq9 icjau. 57hon 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 through 10 complete os -und// :xr( d:adufsycillations in 5.0 s.//u suf:x : d(add-yrn What is the period?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring of sve5 *m* upvy,w7p/fh yuc cy20pring constant 20 N/m with an amplitude of 0.30 m. What is tcuc2yy* v ,e u07/ 5yh*pvmwpfhe 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 spring of spring constant 20 N/m along a horizonn;bsu+ 0fs.kwkv 4 o; f.b4lydtal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilifks s;yfw;b0 .l4k.vd 4+nuob brium 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 SHMd (xqpr ev;p/b ky23t7k;r,tm with amplitude of 4 cm. The energy is 8.0 J at this time. The mass isp( km;rvdbxt 2pe7qt/;3, kry 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/m along a 9*hc0q jzpe:k horizontal, frictionless szch *0qj9pk :eurface. 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?

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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 spryzd t7s37r0l 5oj0ljzing 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. Atjy jrt50olzz7s730 d l 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 spring of spring constant 5c82w95bl;3mu bd5 kcjhfvz*t:v, kqo0 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is 5, hv3kocq*bjwm bf z5tck;lv92d:u8the total mechanical energy of this system?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal sprirzzur32+;d;wa is a7tng of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of thitzdau23sar riz;w7 ;+ s 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 + zxp3dboyhes /6jw83*6 wbajideal spring of spring constant 20.0 N j wo* 3pws+y8z6ehxa/bjd3b6 /m with an amplitude 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(ugkk i 08 bvh7z1b:vk system is displaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced onbkhvkgk zu1:( biv780ly 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 g; yiphi0 2)ple+baj;/m. The object is dia;2+e pl;0)jgpyibi h splaced 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 tw2-8qcl g7 ag(5e80.kvnzih j c/zokto a spring of spring constant 10 N/m. The object is displacenz.-k0kg8jvg5i/eq ( altho c8zw7c 2d 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 1lrfmp hs 2k2 xj7ttgxn9-4; h08 N/m, displaced slightly from its equilibrium position, and released. What is the frequency of its vibratiosx p 4xh 2-; j2tr9gknlfm70htn?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillates at a frequency of 1.27 Hz raa7 ,sgw j9l2m-fq 7vwhen displaced a distance of 2.0 cm frorvfaj7al q7g wsm,2-9m 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 differenttx -z ek(lbf1qc7re 41 springs. Mass A vibrates with amplitude qe1tk7x-c e1 lf(4z brof 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equz5 rxp4bsdnea5 9bdlqci0 )3. ilibrium the mass stretches the spring 2.0 cm downward. ba5lq03z dd.5 i)n4cxepr9sb 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 equilibr;lrve-lrwjbvuu0md t9b*0 .0 6 i;qohium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm downvu;6 hlmt ;q -bv0iwdr ebjru90o l*0. 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 sprr 53hhm5iy5 ebing. In equilibrium the mass stretches the spring 2.0 cm d3e 5bhy55mrhiownward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the following pfo2;qv m. +fgsosition versus time equati m; ffs2v+.gqoon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 38xvd0 fvznm4 the following position versus time equatf4 vz vx80n3dmion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ob hkq166 u r5txonon8*seys the following position versus time equationox 66kosnq8 *5n1uhr t:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 freexz8rkclt.c6pyr/ . y * end of a spring executes simple harmonic motion according to y c.ztkxc./ yl8p6r* rthe 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 N/m osciif(hzj m/kj0ba7m2( c llates on a horizontal, frictionless track. At t= 0, the mass is released j2aj z0kf b7(mch(mi/ 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. (a)bvc(t.p kyffy20(4z b What are its frequency and period on p 2.(fz(v b0tyb kyfc4Earth?

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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 its period o 6l,r fcf hu* blq2h72-hcdof,n 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 mln*- cndv*gn9 nc ju557hzy2its 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 grandfatherzd n o466od w3 ltxp-39zb-;,mpepbvc clock is 1.0 m long. What is its period on the Earth?zcl- vbdx,e9mwoz3to4 d3 p nb6; 6p-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 clock is 1.0 m long. Wvq *n tnv6cm:eo85x3ahat is its period on the Moon where the6ea*t:8 mv5xonn3 cvq 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 stqb80a+v+o);nq4egbu03lt sewnit8 aring. When the mass is displaced slightly from its equilibrium8)iq;0ewg aua+vn0 etl+b o4sq bn 38t 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 ofz;gdj/ l 4h+8yylx g, iaj +)8f7odmld a 20-g mass has initial angular displacement of 8.0e. It oscillates with a period of 3.lgi+/j8my z47)l d g ,oddal jy8;fhx+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 wbp a26:n 5wo+ga5/hywzhw 8k save at a given time. The frequency of the wave is 120 Hz. What is the h b +a2hpz:a5nwy86k5w sgo/ wamplitude?


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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 frequencya g,uqxd4x7 c: of the wave is 120 Hz. Whatx g 4q7ca,dux: 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" o ha(jz y0i+c+nf a wave at a given time. The frequency of the wave is 12az(i y++jhcn00 Hz. What is the wave speed?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency *mtmhhre .)am yv89i7of a wave which has a period of 6.00 ms?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the period of)ta6-:uwt +ofvtn e: zm jphti9x.:: z a wave with a frequency 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 wavelengr8v*0pb4imwv t1(/vfft zk 9kth of 3.0 mzv9/v4rt1ipfwv0 k8fk t m *b(?

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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 frequencfh cak o4 55*g3vnnq3ny of 12 Hz5nqhan54 f3k*vno3 gc?

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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 travelingy*hr zr07:hnihdnx:)f x r; :n 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 kg/m is under a tension of 1350yua.jn d:o b fb9r*;9u N. What is the wave speed? nb*y9jb rf9oau:d u.;

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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 (hdz3l*)nah v6.0 g/m is under a tension of 180 N. What is the velocity of propagation of transverse waves along h (nv haz3ld)*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 0.51pml)x4 ekm7j 00 m is traveling down a 500 m long wire whose total mass islx)7pjmem k14
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 strin8wv m9j36 sqjug fixed at both ends is 200 m/s. Whi9usv qwm68jj 3ch 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 ha 5t .zi 4ctzmcdlp0 /y7edk7+ys a fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resp7z0tdyme5l/zty 7d.i +4 k cconant 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 s7 ax:.lr 4hypnegments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal seg: hp7l4.yaxr nments?

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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 wy55:b) es wtubith a standing transverse wave pattern containing 3 loops. What frequencybt:)sb 5we5yu 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. What shontuo /1kx, -zikfta6;)9j1t l7v/mhh ( svhvpuld its length be k1hm z/ij ovh1-7puvv/fa(n lskxt9 ); h6tt,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(ps:.iy ,n)) xk thlsc linear mass density 2.00 g/m and length 0.600 m when it is subj. )is kc p,()hns:xlytected 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 bo4kj3m:fbbya; s2 .rlw6 jwb0nth ends. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops is for0mrs:;jjba fb. k4y3w 62 lnwbmed.
(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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