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习题练习:Physics Unit11: Vibrations and Waves



 作者: admin发布日期: 2022-08-06 21:32   总分: 99分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月06日 21:32  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The time for one cycle of a periodic process is calle116lqohj mt,e;b0e p awp6/m gd 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 cy1c6ckiamz0j )/4 rt3(ac hzlw cles 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 p 3nwmz0ado q8*b1 .7lf,trii maximum displacement from the equilibrium point is called t1b3p n*li,d.rw7mz 08a fioqthe

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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 undergoddkmpcr 4 8z8qy6+m 6ses SHM. When the mass is at its maximum displacement from equilibrium, its instantaneourd64y6qs8d kp c+m8 mzs 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. W6+br14faov hh hen the mass passes through the equilibrium position, its instantaneh4v16ro ab +hfous 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 unde .nk mf y5pkh5+3q)jlvrgoes SHM. When the mass is at maximum displacement from equilibrium, its instantaneous accelerationvylmhp3+kq55jfkn . )

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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 down betwe3tn.( mfortr /0wu /maen points A and B. Where is the mass located when its kinetic energy iurr/tmw0 f a3 (/nm.tos 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 bobhmb +,iny3x ptshwk * -bu x3:bma)1r)s up and down between points A and B. Where is the mass located when its ki3 p+x 13uwh)bsia-kmn:, xmyr )bt* bhnetic 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 spriaus/v r/ z,+rrb7 rp q1x3q5xcng and bobs up and down between points A an35uqq,v/+x c /s1 pr rrb7raxzd B. Where is the 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 between ft l0. j6lacaju:tr4zid68bnto5m1 2points A and B. Where is the mass located when its potent2t8lor at i6ztd4a.: uj n06fcjl51mb ial 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-;7 em zb ;t:j(q;qfjxsand-spring system produces what x7zq t ;:efm(qs;j ;jbeffect on the system's mechanical energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the masst.bdlf;t2x17j/4x 6ljjo yzq of a vibrating mass-and-spring system produces what effect ob7x4qfd.ytj z2l ljj/o6t1 x;n the system's mechanical energy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the sprsqmi2* vi;ir fn9r1fs*nw s05v +s -qwing constant of a vibrating mass-and-spring system produces what effect on the system's mechanical ens in 1v5mw;fr9sr i+ *fqs -wn02s*qivergy?

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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 ovtfx.c )t-ka 5n the Moon. Where is the period the greatetvfct 5-ka ).xst?

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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 s,nleo4zcu l/; ystem causes what kind of change in the res;cu/ eo, lzln4onant frequency of the 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 a mass-and-spring systcov3ns jsnkk; 80c s./em causes what kind of change in the resonant frequency of the s 0vn;3nco sksc.sk/ j8ystem? (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 mh3g5dzp j +nihx;i uvk8;kc)3 ass-and-spring system causes what kind of change in the resonant frequency of the sys z8j ih3nh;)c +dg3pk;uv5ixk tem? (Assume no other changes in the system.)

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

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a olaw( m- ey8u::s-oe nwk3b z/mass M attached to a weightless string of length L. For this system, when undergoing small oscillati:3 uamb:sww-eoo y (/zl8nk-eons

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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 req;rfp m6 lz607to(fo phuired for one complete vibr 6lo;7 tp0oh(pfrz 6fmation

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and B are 3.0 m long. The period of A ihxy,xb):yz1*du 6i e os T. Pendulum A is twice as heavy as pendulum Bzo1 ),yybuex* : hd6xi. 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 t8uajq ntg-68 oime for one complete vibration increaj8 got68qnau -ses 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 (hb--k;udy k*d ww6by mass are increasd-ubyw (*y;6 kkhdb- wed?

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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 1 suz7p6l;od/ssq7qr l:.k k,gox +dztwice the frequency of simple pendulum B. Which statement is corr6k., s+1px/ l z7s7s:qqdgodrkzlu ;oect?

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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 thebrbz;: q)s *qk Moon, where the acceleration of gravity is less than on Earth, the resonant frequency of the pendulumzk)bsrb:;q *q 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 repre3i*lp- y5lf*nkb) r hhrj w(d3sents


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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 repres:9.3ce.0wrolngzskn . fa2uv ents


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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 repre.y yq )2cha6z)q*beevsents


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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 )rn7 w,rcs ny)is found to depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of points of the wave from equilibrium is co 6s;c 8zj9ti: h3strealled the wave'3js6t:recs; z h9i 8tos

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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 calh,:e w9vxva j lmmm3;3led 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 kz+srv4s7 tey ;( k;hy5hh.dvpassing a point per unit time is called the wave'svt kz;rv 47hy(kd;hys.e 5h+s

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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 wavelqwg nwdgsn3-4 p*2h2a ength 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 dw(46dk :irqubzda+ msut ) n0z4(.ctthe distance between successive crests if the speed remains c.mauub t(r d0w+4 (qzt6kizdd :s)cn4onstant?

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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 strinib w5-l 5b2d qjjwpi:8g with wavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the freqq:2pb8jlww 5dj5ib-iuency 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 81c-gxv,y8skxxvlbo r5 +o 3n T. A standing wave is set up. Wh8y,bk xx o85r 1vvlxs+o cn3g-ich 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 the lfz ef/3*b eg.string is v. What will be the speed of a wave in the string if the mass of the string is increased to 2m, we3*e/f f.b zlgith 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 ryzjsau32 femr4 8r6 (r7xo 4aT. 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, with no cr8z3 re ra2fjax 4us46 7ormy(hange 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 i(m6l ,.whdlefn the string is v. What will be the speed of a wave in the string if the tension is increasdm(6lf.l w he,ed to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse v8cqg5ie24a h : yph2rj8cb5x1 so7rf wave. As an S wave travels through the Earth, the relative motion between the S wave and the parti:15cs2rh24bhv8q5i goxfae7y p jcr8cles 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 trj22eu(b qj /yo53ixf yavels through the Earth, the rei eq2y/fob2 j5x(uj y3lative 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 iseicu x9d5ha4x; dr06 rm ,q;us

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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 all:.k g5 n5+ yevedv-cvong a thin cord reaches a discontinuity where the rope bec+v-y vdnleg 5k:v.5 ecomes 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 amplitudes pas3x:iv -: pmgi 7ribip0s each other on a string, one is traveling toward the right and the other toward the left. At the point thib p:x0:v 7gmpii3- irat 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 other on a string. The one td2 0eeg(is;om raveling toward the right has;em2segi0(o d 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 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, su 4 df( sv6i0ntifllm.7j;uh5uch 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 vi fisb)is(z- 77azt ,rrolin string, the fundamental frequency of that string will inz7) sb 7-,sr( fiatzricrease 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 strfx;6ro.4 yke oetches 2.00 cm when a mass of 0.600 kg is susp.xoe6;o yk4 frended 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 60s m7(vvg9 -nnn N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N vn-m(7g9sv nn 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 oflkvm36sy+l w..ghc w9 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 go. It takes the mass 0.50 s to go back to its equilibrium position when it . w syv9m6ckl3whg+.lis oscillating. What is the period of oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along a horf:- acnu,8my*h+ b/kv. e33kdnderr sizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass an.afr+e:yn,hncv dr3d m*ukbs 3/k e8-d 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 SH l9bu74yr8dw:klt4x a fw4t.fM. It goes through 10 complete oscillations in 5.0 y :7ft44fxak b8w4td uwll.9rs. 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 frjao 4i0d mt;gt5l0n bm/ iz+y;ee end of an ideal spring of spring constant 20 N/m withdlg0m/z;itb4 nj ao m +t5y;0i an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a r mma7(b-.zephorizontal, rpambz.m-7e (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 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 mgr*dxrgo9: z q0s5o5is 8.0 J at this time. The mass is cut in half, and the r90:o doxq* ms5ggzr5 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 N46.5rfrkk+z c vo sce4/m along a horizonv 5+4okz6c k re.sr4fctal, 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?

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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 along a horizonnn; c:3nf5iuob : *kwdtal, 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 thenkin;*:5b 3dwn:o ufc 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 rngw mbn82dkhf8:n6ngrr/q g ) :0nr2the end 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 torgrng nnd g 88:rmnbw/nhr q )f0k62:2tal 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 luxhr(26 h(bri z iv;g1f3f/uspring of spring constant 50 N/m and set into silrr 3 2ihiub1z g6;v/hfu f((xmple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth e9xl3r x0ea1 jq( 7ubtfrom the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.2rxe 9lt xa0(u31ejqb750 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 displace -hjrtnw8 d0oi3oom416 +me rrd 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed io36 1nr8w0o ithm -ro+d4erm jf 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 uc ,u(ym;.kaibp,i8qa spring of spring constant 10 N/m. The object is displaceqy.i 8;bckaui(m,, pud 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 ton t:rtdx ; kz1tzt470o a spring of spring constant 10 N/m. The object is ;n4kr10txtzz t o :7dtdisplaced 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 f v2cs hqxkdu6:xg 4u*)rom a spring of spring constant 18 N/m, displaced slightly from i 4x)ug2uv*h x 6d:cskqts equilibrium position, and released. What is the frequency of its vibration?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillates at a frequency of 1.27 Hz when9pe n0u0sfpeibm n9(8d(aj ,c+m u)ec displaced a distance of 2.0 cm from equilibrium and released. What is the mu,c pc8m deep ujs0+ ebm0i)(fa(9n9naximum 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 springt6 c8kvs-a1 g)rxnqn;d x16krs. Mass A vibrates 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 rsra c;6xt18kgk )16 dv-n qxn16 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 equilibrium the mass stretches the. u:ofyf71 y0gjosu mrfr943a spring 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 oscillati9ff4rof7g 0a.3suj: ou1r ym yon.

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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 the mass stretchesq6q ej(x s.aw2k+4dyw kzr+7n :bw yd3 the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released f wxnz4 s(:yrej3w6a2dqd7 +y+kbwk .qrom 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 spr*8gg66ow ) hfmkgg ks8ing. 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. Write do 66 gkhmg8 f)o8g*gkwswn 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 ha,*8i mxj7uf en vpxhg qaj323*rmonic motion obeys the following position versus time equationx7q2,gnia jv3 3 jhue* *mpxf8:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 tb 3;t ;lj/pfffollowing position versus time equfblpj/;3f ; ttation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ej0 u 7; ixx4/mawwoj4following position versus time equa4 x4mj/i o07xw w;uajetion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmrcwg)z7x:gdev4z* c2 onic motion according to the xd*g)cv z4r7wzge: c2equation $y = 0.50 \; \sin (18\pi \times t)$ 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 t5 1gut.e/i m*rofep15( b ecdnw0yt*b o spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionl. 5y*gdfr 0be/i bct5 we pn11out(em*ess track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 compxzte0;k;ap/g4 /f4n yc l aq*glete swings in 8.0 s. (a) What are its frequency and period ogyk;/n ptxzc0* 4q;a/4l fa gen 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 perigf (wgm 19w)p6be l4bpod 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 periodf2mzwa qq m wdkvhww;9k// 9)/ of 2.0 s 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 0jizyed3: /vm53rnfp clock is 1.0 m long. What is its period on the Eartpj 5:iy/0mdrf3z3 env h?

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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 is4loob x 3 7)t5 qkv7noi(/ioc-pwao d7 its period on the Moon where the accelerati7vt 3) n (iw7i7qx5adkoop4l/ obc- ooon 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 a1n :3ey0t jgmbttached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) hagj03n 1ytbem:d 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-i -tgrbrc5w,*( 8 pc-zzi2l/ nky0hrzg mass has initial angular displacement of 8.0e. It oscillates wit kliznp *gz w (c 5,0/z-byh8tr-cirr2h 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. rcta0ff o/a4-baejs :z q:m96 The frequency of the wave is 120 Hzf:6e m bja-9f/ q:s40r ctzoaa. 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 wav5)4uc:0r.omkin(3 gyiq je vne at a given time. The frequency of the wave is 120 Hz. What is th icn r5nq0o4v)my3.(i e ku:gje 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 w:jl7jt+bamk:2 v hpt)gp1y+save at a given time. The frequency of the wave is 120 H)s:att17j khgl++bp: j2mv p yz. 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 which has a per u:xyun3b1 (xtfbt9. vb.ge3piod 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 of1 oez3 cy6qll2 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 frequuxkk;yl6nc: . ency of 12 Hz and a wavelength of 3.0 k:u xncky6.l; m?

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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 gn , o+6ol- 4prelltojbo;y)+m and a frequency of 12 Hz?eytol l,go+ ;4bo)or l-n6+pj

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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 w: 4 za hdfxyay2ed45 stv:/c(iave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/m is under a tension of d459yzhwml 9y5)h ctz1350 N. W )y5cz4tw5zh9 dm hly9hat is the wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is under a tension of 180 N. What is thhsm o0bxpml9:b :gf- 8j;cvdf9c x:/ve velocity of propagation of transverse waves along the g:p lfmxvov-fm:b:0hj;s 8x 9bd/ c9 cstring?

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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 d; f8l+zhk0 gwkown a 500 m long wire whose tot 8k;+wk g0lhfzal 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 hb ,il;i:;/pr cf;t1h4zpani long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequnhpif:lc1 , z4i rtb;;; pah/iency 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 oys flg*75v- ,1hjvqebrp *.irf 500 Hz, which one of the following frequencies can set the string into rebe7jh* vf.* qg,ivrr y s-1lp5sonant 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 to3me/ pue3qf/o have four equal segments in a standing wave driven em o//qe3pf3u 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 at a frequency of 12 Hz with a zd)9v mr0b :o 7dej5w/,qnzucstanding transverse wave pattern contaid, bz7vmc0n:ew 5uqjr9z o)/dning 3 loops. What frequency is needed if the standing wave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 1.5 g/m is under a tension of 20 tdg2 rd q:m1-m m-my8kr/e3 imN. What should its length r3i/ e --:8kgyr1tmmmdm2dqmbe 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 mass density 2.00 g/m aqk0 twg;eq*) end length 0.600 m wte q 0w;)e*gqkhen it is subjected 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.dp k/nj- nbd- vz/g7c/5 m is fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops is forn7np//cd vbj- zd/g-kmed.
(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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