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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 perigecu wrtwp( :-/(z x1kodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the numbero+s/vtmojr muu p7 8hk-l598i*rhdo: of cycles per unit time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from the equilibr ,er:qr:tu 5e.c h(eqyium point is callede,yc.qh :(:u 5retqre 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 displac:hd/ )fbaa0 zsement from equilibrium, its instantaneobfh)daz:0 / asus 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 passes through the equilibdai ;qt3codzpm .*s7d c 0t-/orium position, ;tcqdp7 a.ztodc 3id/0* os-m its instantaneous velocity

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at mbtfj b-q)6c+c aximum displacement from equilibrium, if)j- cb cbt6+qts 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 verlxpplunag*t hif-8 7ew79.:s jh v-5stical spring and bobs up and down between points A and B. Where is the mass located whe u:8se9 h-* twihp xs j.gav-pll7f57nn 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 verticat*hs(ma sj8l/wgz,3e +ve.c ol spring and bobs up and down between points A an3z.(es/j+vo,*gsw mh lt ac8e d B. Where is the mass located when its kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and downiyy,2js iwy b;k46z.wa ; vkr+ between points A and B. Where is the mass located when its potential energy is a minimb,rkw 6 yywy2+j. iivzs;a;k4um?

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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 u (ax7pnze84ibobs up and down between points A and B. Where is the mass located when ip8 uznai(47exts 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 s 4ixtgc5sm.m5ystem produces what effect on the system's mechanica. i45s mm5gxctl 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 masujq+p cb+oeid65 .swz (n1t0ss-and-spring system produces what effect on the o1 0ipus5z+we+d jcn.6bs t(q 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 c(;zj86 2 afbazr. id c110jvifkx;vur onstant of a vibrating mass-and-spring system produces what effect on the 6r av xzbv2;i.j;01jkaz1f(duf rci8system'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.4piwxtx71go0er k c zs)4wb1( Where i1 wx41w7opr(sbk tge4 cxz)0 is the period the greatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k of a mass-and-spring iolwpyd 2q-1u,)bq g j;twt3( system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's map -lyjdqgotb;i2) qw3w(, ut 1ss 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 wj:,jdeukt n-aqb2l1 eya7; 3z *fu b,causes what kind of change in the resonant frequency of the system? (Assume no change in the system's spring constant,-qa3eyeb ;,zfa jlnju2kdb tu1*: w7 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 causes what kind of cjhv3a 0rh6bt/ hange in the resonant frequency of the system? (Assua3jv / hthr06bme no other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a mass M attached to a weightless string of le/*b-rlo05 ttkep wew ,ngth L. For thl tk,e/-bp0ow*wrte 5is 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 one cosn f,*6uzak :2vfy wd bg85h)fmplete vibratisn8d,ub2z wvfh*f)akyfg: 6 5on

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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 aj 6al85kxp, dure 3.0 m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the period o8 k ,uapl56djxf 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 vibf33kbkla.5x u ration incrxk a3.5uflkb3eases 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 pendulra7p25lww)o( )capey ;8chn jum's frequency if both its length and mass are increas )87 layppc( h2aocn ;rww5)jeed?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swin-444y5mgm h zjlxjh :autu4*wgs back and forth at twice the frequency of simple pendulum B. Which statement is corre5jjzwa 4hu44gh ym4 *x m-tlu:ct?

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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 acceleration of grawm o/y shvqmh5y ; 5rx)78h-hkvity is less than on Earth, the r)qh y8h w -/ k5sohr5vym7xhm;esonant 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 represevaffe33os+ 4* jgzi5ents


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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 represen jo/q;9o,ajq qts


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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 repp3zx2sdg-hou+v0lry q) h + kw/y3;ziresents


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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 o5f-rf klctc 7* jkf:z9n 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 7/w1 m8l qzb.mhkd9vzk3 m2do,1cr kxdisplacement of points of the wave from equilibrium is called the bmowdx.zk8hzl1/1k dm2vrk 3m 7cq9, 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 qkns k3p m:7v*)*s2c)qr ck9p p-x sndcrests 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 passingloke*f/+dv9y*vb1 7 dj p68 ik.hiuc q a point per unit time is called the wave'sepo87+/. q9u6*ki1hvi ldjk d c*yvbf

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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 wa4 g,b mwfoc4qh n8e;4yve'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 distanc 9:imm9dlh 9zri r1t,ke between successive cres,m 1htir9m 9zr: i9ldkts 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 wavelpardtv )1jw2m:xew+ b8m n 35ejy bgfa.c+.b5ength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of the secod3w + a e851byt)x m.bavcjjnf+w 2pb:re.gm5nd 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 M, and ten)) 9 gf6w.qq ftamq4fision T. A standing wave is s t6)w4 fgff)9 iq.mqqaet up. 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 lt ted i1y /ig9i1hg+(is under tension T. The speed of a wave in the string is v. What 9t1+y t i/ idgg(h1eliwill be the speed of a wave in the string if the mass of the string is increased to 2m, with no change in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is ni81d ljr f+)eunder 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 increas)f8edjl1ri n+ ed 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 tensiy8gp )3csu5f4- tw5 (r tsshdg 0sl.phon T. The speed of a wave in the string is v. What will be the speed o 5ylsh(s08p spudt)gcg. 53r 4hf-wstf 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 transo kgkftf,/cv+f.; yh ;x c ddcohl,:1)verse wave. As an S wave travels through the Earth, the relative motion bt;.xdkdc,,fk+1f) hv:g/l cho yf;coetween 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 longitudinal wave. As a Pgcq0/ yb hdlz9+ y:*vj wave travels through thy9jyq vdgbc 0l+ /h:*ze Earth, 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 wavelad.19m1ttqwjix:sv si/ ,( o 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 adv6l.rhs 0+ zf thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulse h+0z fsvl.r6ds?

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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 on2ki mtg.7o ix8-7vgdm;9 ymio a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same region o. 7oxmgy9 ;m87odmk-iiv2gi tf space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. The one travelf m m7 y,80 nw, k4zteusaq2n od(g+f/d/iy8mying 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 region of space at,nwfe,m7y nqmf+ 8sdkutz4g0/y m(o 8di/2 ya 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 str*zxh5 q ljk0b4v; 1sxbing 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 inm 7ve4,ar2 kdvo+2e21alx jqs a violin string, the fundamental frequency of that strveq,+dr2 21l2 4avos7majxke ing 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 ,rl0 81a japj,jwt9cywhen a mass of 0.600 kg is suspended from8apcjy1,at,jwlr90 j 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 z0h(mx ,+ em2gt4rms nconstant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N o n(mrmx zmegh2+s4,0tn 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 4b4z 1v 9qnnoh 0r:bezN/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 onvr:h1 z9be4n0zq 4bs 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 alon:s:r v8vdakt4; 8wicng 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. Wantvc w;8 rvsdk4::i 8hat 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 goe ppm 1anq4tvmy; 82.vw :q5kmms through 10 complete oscillations in 5.0 s. Whav 41mpv5w.npq yammk:8 q2;tmt 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 fro1x3mct xr:c2t/tfb/ob( o0m xm the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0cx m21fcbtb:/t t xromo/ 03(x.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 sprizzws4)*kba wf: rvba/prd05 ( ng 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. What is the total energy of the ssb4pzabrk:*z(f5w /d avw)r0ystem?

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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 k qnzkai2/:q ) uzg1)ithis time. The massa) 1 )qiu iqkz/gz:2nk is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attach/ -v*a: idj y2kn*h.jdlyi7tasg16 eted to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium pajadyd1i7tl ev si-k2hy:6g* t/nj *. osition. 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 spring constant 20 N/m along5;8*zu 3ckrefvqw 4 jj a horizontal, frictionless surface. 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 kineti*;z8cw 3 q4uv j5fjekrc 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 springqe2j:r szuw rv/f2o5j )c, ,yy constant 50 N/m and set into simple harmonic m: jj)ewyuyv,2 o sc2q5/frzr, otion 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 end of ad1;enpv-oi 9:2 lx 3q25kxe vatbyq)b 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 mechanical energy of this systemb 53 n 2 o-tkq bd2)pv;:lveyqx9exa1i?

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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 s;.y 8corh2blxzq s z/0pring of spring constant 20.0 N/m with an amplitude of 0.250 m..2z h sox8clb qyz/r;0 What is the maximum kinetic energy of this vibrating mass?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of a mass-and-spring system is displaced 10 c4+si njw29k)frgl (ha2 d30 beffdft3m from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observ4da jk t0 g3f29wbhdfir)(l e+3ff2sned 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 eyt982tjw+ ve3/rs- esv -c*grz:q ndspring of spring constant 10 N/m. The object is displaced bdt stnwr9es:8e2v3e-+/ r-vgjz y c* qy
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 obuwyt aw )5+ bgxts:i+;saeq hryp8vv(s 2)t+5ject is di5+agy( be rt s2yssh+5ipvww ))u; 8qavt +xt:splaced 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, dzk u 4oshwn3i82a 5k-cisplaced slightly from its equilibrium position, and released. What is the frequk4hk58woaizc s-n u23ency 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 at a frequb.q2 v;8rr+nyqfkr2a ency of 1.27 Hz when displaced a b+kq28fryra2vnr;. q distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the mass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, are a aybxh: (0s9r2 si2m,r;dswnqttached to different springs. Mass A vibrates with amplitude of 8.0 cm a w2myd9:rbqss s x2;r(h,an0i t 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. In3d1jb bmuh+ 5jz p//jh lzvxpcp +3/9r equilibrium the mass stretches the spring 2.0 cm downward. The hujp5/ / cprb9+v3zzp1jl xmhbd+ j/3mass 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 hbgj5zdcw0 se4afwy e.4 ldk.6/;-klthe 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 sa.c;65 w 4fl0j/lwdegh4ky ed-z.skbystem.

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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 suspendedv *89uix6f 61cr)ru ssi8rnos on a 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 and released from rest. *f6xn o6i)8rsrsiuv csu1r98Write 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 ob5/fezf)3tt if5eqj lf.m5 ;jueys the following position versus time equation: 5l j5t)umf .5e;/3if efzqtjf
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmo)oqk/swnd4 wh sw8u5*nic motion obeys the following position versus time equ/s8*)q4n w5ou wwhksdation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obeys the following position versus tfu4 va 2oyr1f)ime equoyar 1)4uvff2 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 harmonic y 0fsrojrpt/.aqg/a . u9/j4imotion according to the equatifjgi y0.4ops uraar /q9/j/.t on $y = 0.50 \; \sin (18\pi \times t)$ 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 fon,u7x14 -jpz bdtem)k1vy3l rrce 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. (Th1e,rvltx u ybnj)d1 z74mp- k3at 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 ina ca/x;ki,ut+c95 a8by bt(o d 8.0 s. (a) What are its frequency and period ontbac;k5o+8 ci9aab (dt, uxy/ 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 is its period on E+mi* f8ok aa o49trki*arth?

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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 i7m-mhcd rpiz -x434ts on 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 peril ,5ztx+9z n 5dt2df;p x4axluod on the Earth,zx ttld5l+p2fua ;9xzx nd5 4?

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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. What is its period on the Mo98l44g dh6kcmewe 26f+ m ucbson where the accelerccsm2de84w 4euh6fm g96 kb+lation 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 coiw.ccr1 hi )nsd 38ub+- 8pehansists of a 0.25-kg spherical mass 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 3r)sd+ 1wn.uhic b8 8 ehcapi-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 has initial angular displace*ph+ob 6 3jxozh:v ki9ment of 8.0e. It oscillates i+hxpb hz o k9:63ov*jwith 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 of thehka4jgub82m vm3w8 6*t9l5 l /r gpyvx wave is 120 Hz. What is kgw yug6 m 9t 3bl8j2h/8*m rvavp5l4xthe 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 given .8o nc/0aqu9 ppp.plb time. The frequency of the wave is 120 Hz. What iscnp0 ua ./bq9p .8lpop 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 wa(2r yx 5rpmexfuh060zve at a given time. The frequency of the wave is 120 Hz.0 r50 re(xmfhyzp x26u 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 of a wave whf7fluwkxj8 aom ir :p21;,-vg ich 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 a wave with a frequency of q-a3f91cvqx x 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 frlf)q: a1 eazv4h xd9,8gz wf3iequency of 12 Hz and a wavelength of 3.0 m?azgvi3)zef4 hld: 98qx 1, afw

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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.e; mso7sdw3ju781 kuq0 m and a frequency ofs13d7;quj u8 mok7 wes 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 frequency oh 6 qp1r(vg c1o+we: gvgkpw8+yas(/bf 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 dens0* qja f5wt2jvity 0.0050 kg/m is under a tension of 1350 N. What is the wave speedjwvj25 q0af* t?

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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 underbf t:o9wvkiq ;nlfl+o d3/o*:/n wcx gyq:-k) a tension of 180 N. What is the velocity of propagation ofo9 ow- y) ql*vn oqxf:; +: wkdtgcif3ln/b/:k 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 down a 500qlsme91a0imt z ,vc*8 m long wire whose total mass i eq*9miv 018cstaml ,zs
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 jcs.. b:rld;/g a5hmyeft/;u long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequencyay:dg ;t 5bj.r lumfec.s/;h/ 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, whiq pfg9g;dis7 )ch one of the following frequ;p)7idqg fg9 sencies 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 0y zgged-af j35zzk c-d/2on 6standing wave driven at a frequency of 480 Hz. Wfje5/ozzg 6-cy ddkg 320-znahat 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 at a frequency of 1fn c wh;8,h.jz2 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the nfjcwzh;8,.h 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 tt9 c*/c:v ifgjkq;5zyension of 20 N. What should its length be if its ft*:igv;jc9q cf k/zy5undamental 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 2.0j90 ze8 + aytmv8e4kwn0 g/m and length 0.600 m when it is subjected to vae8ekmy04w +n8 jt9ztension 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 2cgqm;x xy) e/at both ends. When the string vibrates at a frequency of 85 Hz, a stand/egcm)x x2 y;qing 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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