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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 proc mr)xrnr+5;4gfdmf h4/ok wb.ess 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 numbemhu:ftz)k6squl 5h -apm :,lf.zu2 v/r 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 maxima8h :r-y wlk sv6eolut+hb04 2um displacement from the equilibrium point is caull ro hh +:y6a8b-kset vw042lled 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 displacemenaxs1h+*l8 (x:jky duo t fr8jyd:ouk( hx *l+a s1xom equilibrium, 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 undergoes SHM. When the mass passes through the equi6h hmq8.;pe5uoep g* vlibrium position,6o*e5. pv;hq e8mhpgu 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 maximum di2y b,rxv/xy.yht* ,basplacement from equilibrium, its instantaneous accvbr x,a.,xhy*y2by/t eleration

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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 spry-ji )omq yv;.85 ghaeing and bobs up and down between points A and B. Where is h5o-v .aem iyyq) 8j;gthe mass located 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 andlext6t1t0u jnx 8.:-eksl anf/gry2. bobs up and down between points A and B. Where is the mass located when its kinetic energy is a mayx0x2fe. t se gu8/rjlttkl nn. 6:-1aximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down between points A a;xrgp0rd 7c p*nd B. Where is the mass located when its potentiap7 crp0*xr ;dgl 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 springoo uzdk9 j9:4w and bobs up and down between points A and B. W9 joouz4:k 9dwhere is the mass located when its 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 mb7n 304gz8p1cy)yww 5z mojuwhat effect on the systewm3yn0pwmoc g zu8 41 zyb5j7)m'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-sprirxnq 0.tu h8uq-r,se 0ng system produces what effect on the system'n strr ,.-x 8eq00quuhs 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 .l-4x-wmhkp j system produces what effech- kpm. x-4jwlt 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..xshu r gnk(76 Where is thsrg.67 hun(x ke 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 uggjhq /3lm1 n .wd-iqf2)bm0constant k of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system'l)mq2 mujg id n0h g1-q/.bw3fs 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 sygyf7eb8y shs )o:3/ djpyve:/stem causes what kind of change in the resonant frequency of the system? (Assume no cha s j/yse8d/ e)yoybhp::f7v g3nge 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 massbw; yzk8gt,rd;8 kjd 2-and-spring system causes what kind of change in the resonant frequency of the system? (Assume nwdtd8; kkg2 j8,rzy;b o 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 weij)hi 6p 2i*irk aqw8p2q*ort 5ghtless string of length L. For this system, when undergoing small r6i 8qpjr 2p5iitoq*2 wha)k*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)cp1w/s3mvx9e6+t :e0qjaz ya4o ad r complete vibe o+a146 mxta):wyv 3e cjp/s0drq9 azration

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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 ar)i(0f3phvxy aq2)aaa f4:wr+ivly( ze 3.0 m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the period of B?f pf)aq 3(wvvi)ay:a+(l4 ax2hr0 izy

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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 trudkqxp*fo,y3.2e y ;kipled, the time for one complete vibration increo2k ;duq*, p.3yykfxeases 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 frequency if both its length and mass are7mbebv ih x:itmo56i)6m-7yo increaoe: b)h t6-6my 5oxbivmmi7i7sed?

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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 fs;; nt4py9kxrrequency of simple pendulum B. pkt xr;;s yn49Which 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 ph6x iis2(te s(ld78 xq:jjgj ,endulum to the Moon, where the acceleration of gravity is less than on Earth, tqi: 7(e,8 sjsj6 2thx(gidlxj he 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 represen9 f xs u4p;zm;q))hni) t,y8:iecfikmts


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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 reprq+xy8bmmhaf0 mkm 3kl:g sf2a26ti3-esents


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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. 11-1w6ub d1.ywc7d 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 trb.uf m 0y:y3;javu5so depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of points of the wave from equilibrium is ju5nsw*v34kz( .qav-jwbj w ncz;x g*9s4m.ucalled t;(4n.qjvz 3xbg* 9 vsu j -kwjma4wc5*swu n.zhe 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 crestm 8ojkvw8 zp +se nm,hwyb0));s on a wave is called the wave's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wave passing hsy-cdugv 2k(*qof* *7k)tt la point per unit time is called the wave' s tkl(* vfh-k y7tud)g*2o*cqs

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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 tdvky0c (ql7 c9imes the wavelength is the wave's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave increases. What happens to the distance betweroqt2ns /(j z03u6wvlen successive crests if the speed vzqj3n0s/rlu 2o( w6 tremains 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 fr3l;vvk(z 98b ecw0bq fequency f. A second wave on the same string has0(ck vl9we3v bz8q ;fb wavelength 2l and 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 string of length L, mass M, and tension T. Ah1 9m- ins2wwb standing wave is set up. Which of the 1nis9bww- hm2 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 lengt+3kw 0uh3 fysth 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 mass of the string is i3why0f k ut3+sncreased 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 unde4lw6fq vl d+4rr tension T. The speed of a wave in the string is v. What will be the speed of a walw6vr qlfd +44ve 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 speed of a wave in the wl s f.;8u xcz(jn.n15dlofn+cm9szt7.lgg9 string is v. What will be the speed of a wave in the string if the tension+ l7sg xm8g. nonfwstz.;9. ud9fcljz5nlc1( 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 44ry)f+r -gc w7vkeggv +)zjbtransverse wave. As an S wave travels through the Earth, the relative motion between the S wa vgcwjkb7g ) +ez)v rr4-g4y+fve 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 P wave xl4 m/7bbk d h-r5.gbx i6wgj0q99uogtravels through the Earth, the relative motion b57g-ghjg.bb4 6bqm u9 i lxrx0ow9k d/etween 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 id;2(murnysd: s

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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 x+jyq xu+:2zz the right along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted z:+xz+ uy2 jxqpulses?

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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 p8pelonmpv1cy*( c .1 uositive 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 mceyo 118cn *.vlpp u(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 5h/lm/ zwaptbdyv m6trjg l s9e25/)-string. The one traveling toward the right has a positive amplitude, while the onepje ya 2gvmh/9z lt-d/rb5lw/6 m5)ts 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 asog92j zyd*5-um; m azy 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 frequen.8w4k koxk4bz cy of that string will increase by a kbk8ozk.4x w4factor 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 c m92fs(lu yt6mm when a mass of 0.600 kg is utmm2(s96 ylf 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 horizontal, f*)hax mv:e)v lrictionless surev: xhm*l))avface. 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 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 spring0. 6f.quuwf * zsplui( of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched ifp.uu (wufs. ql60* zby 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 co7j ngtgfn1/8vnstant 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 frequencyvgt178gj nnf / 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 untz y,bp3* 5uazhec4/pdergoes SHM. It goes through 10 complete oscillations in 5.0c3a5 h pybz /e4zutp*, s. 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 sp 7 jc60 xvw5rcd,farmi 7gws.-ring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it7vf ic0mrd.gc6 arw-s7 j5w ,x 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 alotd 7i1yre4 cxy jr6+u 7a*)hzgng 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 r gihj7ae+ry7*6uz tdy 41c)x 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 orqrt(0vqaf 6t ,j 9p,zy5 c:nmf 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 with amp9, 6 ,c(jta:nvqy0qfr z5m rtplitude 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 c9:jg3iiceycd; j,+ rjrc 3 f(zonstant 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 eci3:j f(c +rcdiz;y,j3 j9grthe 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 sp2.v *svu6vymqring 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. At what location ary6svm vu.v*2 qe 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 5jm(pnb*vhn: ,2e c5gb 0 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanicalgnpbm(eh:b2jc *n,5v energy of this system?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of sprafyo o ,5,b72s+7 gati hl;zzcing constant 50 N/m and set into simple harmonic motion with an b+yo,at is25zfl ; gch7oza,7 amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth fromn,0syv7;yv8 bh1 xqak the free end of an ideal spring of spring constant 20.0 N/m with an amp1;nvhs 7ak80vbqy, x ylitude 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 system is displaced 10 cm from itsdv r5 zwq*k-y7- (artt4n clpq3ac*7a equilibrium position and released. A frequency of 4.0 Hz is observed. What a5rkcyq37qa t-tc-rzp l*(* dnw 7v4a 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. The5jsqf-jcq/d o/)0 k4,wt (hy;y pcgyu object is display;u q (5h/,pcs0g kt)4/wcj - jodyqfyced 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 l95o)x jlxa 8dN/m. The object is displaced x) jl5oaxd8l 9by
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 sprim9gz ;n abg2bce)5ta:ng of spring constant 18 N/m, displaced slightly from its equilibrium position, and released. What is the frequency of its v;9ge ):g2 bct5anmabzibration?

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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 osci 4pa)2vtkjz)ft6jy 5g. i7hqo llates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the mass?)5athk jt.fp2 o76gvy ) qiz4j

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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 vzt x;6rin3 s7-;f apquibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the i ;fsqz r n3-x;6ua7ptmaximum 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 equilibrium the mass stretches the smvm-kac /me;r/ 4qvw4 pringme rv44q/m kv;-wacm / 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the period of oscillation.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on ajhjuy tf4 cm iwejq (g.a,-5wx7ub7;4 spring. In equilibrium the mass stretches the spring 2.54x77gw qt .y ibuhec,fwaj-;jj(4 mu0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mass+*jq)en jpbt * stretches the spring 2.0 cm downwarj jb+n)qp*et*d. 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 mah b .)muvv/bmk. /lu2otion obeys the following position versus time equka2.hv m .bb/vuum/l)ation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 p;c-y3t( sx6yvw y0s -sw.oliv osition versus time equatisiy.tso(y w6s v;c3ywxv-l- 0on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 fo3i*ll3b 2+zu.d ak0ekragr -v llowing position versus time equation:glzb dkvl ar23+k ea30.r-*ui
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 sim46/dkw tbm02.o/ wbisqnlp -iple harmonic motion according to the equ6/0p m wwot / liqi.sd2bk-b4nation $y = 0.50 \; \sin (18\pi \times t)$ 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 sprx ph q:vm8i9h+ing with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is:m ip9q+hxv8 h released from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings in 8.0 s. (a) What as0d sg8y 7ejs4re its frequency and period on Easgys07dse4 8jrth?

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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 Earth 5)vlxt 94srn+kp+dmtj d32r v?

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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 o1nlt+s. k28 ttnhgg8o n 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. hv-hjh4 8a2ok2uffdoh*ig t/ 9z+0jm What is its period on the Earth?z9oth 0 v/ud22h4g*8ojm fa-jik+h fh

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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 l4 +bpj2*laly 1.0 m long. What is its period on the Moon where the acceleration due to gravity ib yajp lll24*+s 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 mas skbiw5uo)9nab nidb2( 301hys attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth wito3dwa)90in2ky u1sbhn (5ib b h 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 o 01kjy agw2xa6:d.wtdn4y48)o vg i faf a 20-g mass has initial angular displacement of 8.0e. It oscillates with a period ofwat 0kwy 6x4faan o.g21dy:) vgi8j4d 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 wavejj)e io//5p pomyu08 v at a given time. The frequency of the wave is 120 Hz. pej8vooj 0)/m/u5piy What is the amplitude?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. T/af2f- (qg6vr)4sevmuzw; crm 83dpf he frequency of the wave is 120 Hz. What isgr w(de4/f6; r sm8a3zmvc-)f 2fqpuv 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 givenckdnla9h ); 4f time. The frequency of the wave is 12lc)dnh94 ;af k0 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 ofuqg -,l7enj bryfg0sdi- 0l 56 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 ag7t 9xw2 z7wjhp j+al,)rre*f 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 waveleny83bh il*z as8p.5.p c(xk oktgth of 3.0 mop ax(bct*8kk5p8hyl.si3 z .?

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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 f3iz p05o60kx2v 0:lqfwqmxnwavelength of 3.0 m and a frequency of 1 w v6zp2 05kqfnf0m i3qoxx:l02 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 travelingisfkrf /- a(-j.m y(bu 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 und )z.acj9c tua9er a tension of 1350 N. What is the wave speed at c9z9c)ua.j?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is under a tension of 180 N. What is the vel)rs+ uy +feo*r.n/mvj ocity of m.f+*ys /err +vjnou)propagation of transverse waves along the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m is traveling down a 500 m long g(x j*jma49b+ +v dal-ddj;sm wire whose total mas -9g* j(+xddmb m;4lasaj +jdvs 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 traa3y g br8qyazi5.1nf7kl5p + ;wjfqh4nsverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is not a resonant y55r;f+1apq8 haz .lb g4k wqfy 73jinfrequency 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 fundamwg 7)j4;x9 srnbgvbr /ental frequency of 500 Hz, which one of the following fre 9g4nrs);7g b r/vxjbwquencies 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 wave dr:nt 37lut oq uv-j,-kriven at a frequency of 480 Hz. What driving f ,rv-t-jnktul:qo3 7urequency 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, vi 6v.p8hl: ev gmvs31uubrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standingl8hsg:vv 3puue16 .vm 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 pji.vmzsiv(geb 5 ;53should its length be if its fun3 ;jzs5v5 b(epv.miig damental 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 od ,jy ju+wfvdj0 v1 i+4; eidi.w-xhq9f a string of linear mass density 2.00 g/m and length 0.600 m when it is subjected ud i vyj1+iw9f,h wje04+;q jd.-ivxd to tension of 50.0 N.

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99#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A string of length 2.5 m is fixed at both ends. When the string vibrates :7cqc tnc6a1n at a frequency of 85 Hz, a standing wave with five looca c6:q ncnt71ps 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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