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习题练习:Physics Unit11: Vibrations and Waves

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

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

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The time for one cycle of a periodic prb+l .r7( d)zlip jcd+.ews5omocess 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 number of cycles per unitqa/b:p3a 9b jh-(3x +yfxexzm 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 displacem.f l to-pqut 4/by;omo z5j+.vxt9:bm ent from the equilibrium point is calledpz .45fqo-tuxt: jov+y9lm/o; bm .tb 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 i 7wuva9ig*q h 7mr0/yhs at its maximum displacement from equilibv 7gryhiwq*/97 hu0a mrium, 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 throughvreo1o ::cg)b the equilibrium position, itso)o ge:v cbr1: 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 displacement fps e d,dv 4(./msralg3rom equilibrium, its instantaneous aclv4.m gd/es,a( rp3sdceleration

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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 between polv3ud l eu+ ofu 3p7bn7/j/f0iints A and B. Where is the mass located when its kinetic uu 7b+3nod7v/lluf jef 30i/p energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down*oekp9* l 0vuv between points A and B. Where is the mass located when its kinetic energy is a maximumlv upv**9e0 ko?

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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 a0llqgcxk)d s*sr;b1 ; vertical spring and bobs up and down between points A and B. Where is the mass dqsx ;b ;c*0s1gll k)rlocated 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 points A ao nfmr413xy)17 d 2nhoi mr lo8u6hw,xnd B. Where is the mass located when i1lxd31woxh6 2,)nrri o h 47nmyfo8umts 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 produc 6/ln0iw(.bis. b-e vvrhm *vgrd x(;hes what effect on th vg .vdivhs0b/mr6.lew (r(-bxi;*n h e system's mechanical energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of ve- n2hmyq + +7m0ydbra vibrating mass-and-spring system produces what effect on the system's mechanicam +y+mn-2hedqbyr7 0vl 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 -v t+m79+eo v,s t3 yoxsx3e+m4wmvc lmass-and-spring system produces what effect t7ov4vw mycls93x, ts -ex+e m +3omv+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 sdhry5:e) (jo(+u s xxjpring, both on Earth and on the Moon. Where is de o+j5u rj)xyxh:(s(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 m: bl7ctyfw)n8 ass-and-spring system causes what kind of change in the resonant frequency of the system?w)lty b:8nf7c (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 causic :5vd0anj.k o1za7v es what kind of change in the resonant frequency of tnzj 7v.kvoi10a5 cd:a he system? (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 amplitudoyw(j (gtcan j20b/v8 e of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume jcb ( ao/v8tny(20gw jno 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 l)fl p6 ,hbvryf+p8rx1ength L. For this system, when undergoinpr1),l6 b8xffrp+vy hg 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 cd7s:.ix /g2 m8i ognnfomplete n7oxs 2figmdi8n./:g vibration

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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 is T. Pendulum A is wf*gws*sm1w0hy j+ ,ty,hpn (y9 ie9etwice as heavy as pendulum 9,ie h*sjw,esp tmhfg(9 w ywn10yy*+B. What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple penduxk.aha / zu fi0l-( 1j*mdg:vxlum is tripled, the time for one complete vibration increz1/h(a-* vuj f:axdx m.0kg ilases 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 le msqs)o4r-5v)zy:g fungth and mass are increasv- y4squgs 5zf )r:)omed?

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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 bac,w:wa9.;wh.ccyl:bra zr gw6cv 5gd2k and forth at twice the frequency of simple pendulum B. Which statement is corwygwvgr cza;wd:w5c b9h :6..ar2,lcrect?

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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 oaod2dfk dr(ac8ec:) 3 cr4ra6 ugf3p 6f gravity is less than on Eaa)c(6cu3 d rfoak:d82 rrg pce6d4 f3arth, the resonant frequency of the pendulum will

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 rpw.la342melbz0uy - b epresents


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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 re14tqewb p(o+i presents


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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 rep(yet 5vekdl +d3 gi x,s.o)iv0resents


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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 isho *7 tmzi -z) 7le11ys)opqxf 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 q gvppny5b4+3i p*(7h7ndlrz of points of the wave from equilibrium is called the wavepdzhvq 5l7 +i 3n(7pr by*pgn4'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 succe;)cb;n qxi,+l3l xap8w resr0ssive crests on a wave is called the wave's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wave passing a point per q)0byda)3meq/i1md azn0 br2i37nc e unit time is called the wave'sb mn0y dizeea2brq 03id37 1nmca) )/q

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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 wave'jor(ecfmd5/b /f h5 b3s

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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 bavyc k9-0mu8gow0pr4x;dw2 g etween successive crests if the speed remdkc ay g00x 8v2m9 wo-u4pgwr;ains 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 4bb)ez*r (*f5pn2k;gafm ruz frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of the securbm5 4zebaf*k (znr2p*); gfond 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, massb,km6*; t ch6pnf3nix M, and tension T. A standing wave is set up. Wh*mf p,hcx3itk6bn n6;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 und* ny-sv zyx j3ry;:hf1er tension T. The speed of a wave in the string is v. What yz;3x*1sr- nfvh :yy jwill 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 und/75kzd0 fmg zser tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the length is increased to 2L, / sd0 5zzg7fkmwith 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 tensionq 9za+x3dsx,n8 l+fac T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the tensio+ xnd8+ 3s9cq,xazafl n 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 wav6 q(agpz sy9:-wh,ouje is a transverse wave. As an S wave travels through the Earthzy9-:guq6(o aw,h jps , the relative motion between 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 P wave travels thr- /wqr8:b ptrz5ai.h mough the Earth, the relative motion between the P wave and the particlesw -/ abqprht5m 8.:irz 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 b dt.a6+ a,hlx+ml i dv,j-3zmis

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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 cord reaches a discontinuity w qvx6 yd(txi(p6nbx,dl : v58jaxx; b)here th:65pbnq8yvt;x6xaxvixb) d(, lj(d xe 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 positive amplit7kq mp9l 4 r;.(jbpppri3:ogx udes 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 regionb ip.rx;op3g:4pmp97 kjq(lr 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 traveling toward the ricx,hd4 r/ r1vp2i ,fgzght has a positive amplitude, while thep cr f2xh,z1id /rvg4, 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 fixeicxo3 58+.i2x*abkf7h m9eyhj nga+ x d 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,j0q.d6djj :6r2kk l gf the fundamental frequency of that string will increase by a factor.0jdq:rfdg6 klk 2j6j 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 whk27riqn2,gnak + qfj q:ba; 4wen a mass of 0.600 kg is suspended :fna 742bgqqj2w;qk,+krina 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 j/ozet.ne8ssp efj;v1o;rt 86wdr85 a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and d;jnve1se of op sz8j 5rrtt.88ew6;/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 6x bjy / -cvi0d74g:y0 prhltbi.0z q+k0 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 equilibriumikh0lyb7v t j0/:cyg id4.+pz r0b- qx 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 6b9b- m/mn/.ghqjw ax8:v (dvk 0 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 frequency of oscillatio/:bhgnbma- d.v w/xm8j9qk v (n?

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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. Irw49b0 ch1cly* sfo:.zkajc 26p *qyxt goes through 10 complete oscillations in 5.0 s. What is the pe j*sl.cq yw26yzk:x14ar0p*cfo c b h9riod?

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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 spr: a* 7wr+ jsgw-bvlsv1ing constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equs s1vwwl7gb*j r:-+ avilibrium 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 toou dvdv-l45* l pbx5y2gok(0u67 mu up 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 position. What is the tota-(u0*b d7 o vvu5og6 k d4luup5ymlp2xl 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 energymowcupp . s;-;78hvfe hk62p c is 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the enk woc8vu s fc- hpem7p.6hp2;;ergy 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 attachh8- .2fwh6w hrdnrmv2u+ hks51bp5xeed 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 position. What is the amplitude 2. 2u-r5r vxws pbhh8w 5hndh1ekm6+f 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 attachegi 8l *+8)ojot ,wlvqn+c5apcd to a spring of spring constant 20 N/m along a horizontal, frictionln p 58,)wo 8*atocgj+ic+l vqless 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 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 horiz/1 3u ezw6z0 -xjfnkozontal spring of spring constant 50 N/m and set into simple harmonic motion with aneo/zjw6uz0k xfn1 z3- 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 a horizontal spring of skg/ocaf.8 1/dn;75wget y8n z x;7nuvxi4 ke upring constant 50 N/m and set into simple h;x 4 gu v zk n8x1ainw.;7n7dfye5et8koc//ugarmonic 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 from the free end of an inkb gnl382a f+(f rh(qdeal spring of spring constant 20.0 N/m with an amplitude of 0.250 f2nkg +f (8rbhqn(3la 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 x +( sv je5ra5) 8fsbven5lv6x l8vw1odisplaced 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 only 5.0 cm a v)eevv6wavl+f l j58xsrb n(o5sx5 18nd 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 sprina u y2lqj4a n/cqrm.u hw,.snr,d6g+*g of spring constant 10 N/m. The object is displace/a a2q l6y*r,c.sg4w nr+n.dm , quujhd by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/mbny*wd)lb ;t +. The object is displ*b t lnb;)wy+daced 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 az3 76p9hya l u9b7qyeg spring of spring constant 18 N/m, displaced slightly from its equilibrium position, and released. What is the frequency ofu7lg7 b3 pa6hyzy 9qe9 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 whj7ihn1z6 w 3hom f+sp:en displaced a distance of 2.0 cm from equilibrium and re16i7z +nm h:jo fpw3shleased. What is the maximum velocity attained by the mass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, are attached to different springs.)o;mju c pa5/gwj88 cu Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with8u c)mjagu8;p /c oj5w 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 equilibrium the mass stretches the.9dyjx7fylu * 5h 2vs uwq8h,j spring 2.0 cm dow,j*u x25hly8q 9wjvu f.d7syhnward. 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 equilibrium the mass s:)r*8pfu3psbz o4 qcb5se + jntretches the spring 2.0 cm downward. The mass is then pulled a:s3n fuebs*r 5cqpz 4jo8b)+pn 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 stretches the i*q47wvn gvs np3ro97spring 2.0 cm downward. The mass is t*o7r vvn npw3g4is9 7qhen 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 position versus tibg;2na yt 47mjqen71q96 svuvme equa9n7v; 2q gmy 6avtb1suqe47nj tion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmjexsh be(*+ o-onic motion obeys the following position versus time equati(e-b oj+hxse *on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 f1fpbkj0kw+ ;a evgpk626:3lt)hcn dc ollowing position versus time equae1pp 2khbc6lw3j k;vt+af d kg:6c)0ntion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 f)kgr.zn1nf p/t*bamd+vvp:) ree end of a spring executes simple harmonic motion according to the equat:bnf )+k p)1tvagrp.n* /mvz dion $y = 0.50 \; \sin (18\pi \times t)$ 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 constan-ibzj (a +k.cdt of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released ikbj.acd+z (-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 are its frequency ansa mu+gz;-k c*d period on Ea-gucs*m; +kzarth?

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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. Whadgxw+2t( 6 ( c- 1x/r9vyxss 2rqbowvut is its period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Earth. What it zzbkh09k/ d+t4ran01 s0lor s 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. Wa n/6,djem k5zhat is its period on the Eartm5k/,6a z nejdh?

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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 ccwm77s 0k7hd* y )cwdblock is 1.0 m long. What is its period on the Mowd7c0hw kd cs *m)77ybon where the acceleration due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.25-kg sphe u c.v(owlvidka0;aqnt)26n) rical 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 frequency of 2.0 Hz. What frequency would have resul6k()ion) 0tl. aundw ;vacv2qted 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 displacement o4i td(.ywmay /i93d.t qdeiq *f iidqd dmaq/ye(i4t.9. *ytw 3 8.0e. It oscillates with 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 frequencyz r***wis1te3hlxvi0 of the wave is 120 Hz. What is the amplitt *0 13iz*wh*svxrlei ude?


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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 )t n(oc2gyax0a given time. The frequency of the wave is 120 Hzyoxga0 2n) (ct. What is the wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of abpw71gcc+be h5 tq) v2 a2xo9a wave at a given time. The frequency of the wave is 120 Hz. h19geq7pbactb5)o2w+x acv2What 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 i32sazaxhp; q/uj3h3 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 150e/ dl ue,sz*(0lwd9 at0 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 12eg2h c0rwe :s5 Hz and a wavelength of 3.0 m? e05rce2whg: s

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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 freq,udl5 v8)zfrx hxs +3uuency of 12 Hz?drh53f,u+ xuvxl ) 8sz

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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 travelinssk1k5 dd ,tkosm+ b:(g 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 lineau2)ealw k3lvyyxb4 . 0r mass density 0.0050 kg/m is under a tension of 1350 N. What is the wa )42 l.3kwae0ulx yvbyve 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 abam8w57 dts4t tension of 180 N. What is the velocity of propagation of transverse waves ats547 wbtd8ma long 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 wir8+ *; .q mogonkgx;r-rhdgw, je whose total ma.;gmg 8 k- o+,qxdj;ro*hwrgn ss is
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagation of a transverse wave on a 2.0-m long stri9 a,+ s vrw(7scrbk9+ ( h(tiyk:ywhrung fixed at both ends is 200 m/s. Which one of the following is not a resonant freq7rwa +wcy:k+hs( (9hsu( t9, irbky rvuency 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, which one of the foll33mbd4*ya 2hm ekn:c cowing frequencies c3m b:nykame*h c d42c3an 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 w o1zw* m u,gi+ue2x9ojave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal gm1 uj29ox zie w,*+ousegments?

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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 frequents gjqee 3b. 6ey67dt:cy of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the ste73j6e.dtgs:qb ye 6t anding 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.w r)g;dkschycb1j h,d8 aik7: lr-+.gnp ul ,)5 g/m is under a tension of 20 N. What should its length be if its fundamental resonanr cgpu,y8ldhjs)-wndrh +k c;:1a).gl i kb,7 ce 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 ofb(nof j,/g ,ce8gust8 a string of linear mass density 2.00 g/m and length 0.600 m when is, / gu8t(ef,j gbo8nct 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 2.5 m is fixed at both ends. When the string vibratessd ,nv/2h 3via at a frequency of 85 Hz, a standing /as ,indh3v2 vwave 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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