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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 *d j,:uog2eim periodic 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, t.z36b)tdvt3 6rgi g kahe number 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 t4tv 4sojp *h:x6;ehbn he equilibrium point is called then 6v4eob4p: t hs;hx*j

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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 displacex;he bfjyrx9 rz y,s12 ,1u;mlment from equilibrium, itx2s;z xre9y1y 1 ;f jb,,hmlrus 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 1x.4iw+peegxqxapic0- gg 6;m-k 9wzthrough the equilibrium position, its instantaneous velocizqxmgw-94ga.-0+p6ekpi c 1 xgwxi; ety

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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 displacoe)1w(qcm9aj n yn4vdd m:6c/ement from equilibrium, it cv6mo4nnddyc qa )/(:me91jws 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 vertical spring and bobs up and down be. ve+sn nw1fmz as*.e0 nb62dttween points A and *ewmvbdf2an6zn0 .e 1snst+. B. Where is the 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 and bobs u *kz0fn*thoc* p and down between points A and B. Where is the mass located wozf*n c0thk**hen 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 3wuez+3q v1zy9fe o,wand bobs up and down between points A and B. Where is theozv 39uyww feqe+,3 1z 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 g9qzp(g+o ..4y nqm usdown between points A and B. Where is the mass located when its potential ene. (qgu9y n4s .zpgq+omrgy 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 ampli:7s ,f3i7uqvng:qb,l/oj xn itude of a vibrating mass-and-spring system produces what effect on the system's mechan 7 /iilbn7 f3g qvs:x:n,q,oujical energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-spring system produced226x xam glci/3r4 axs what effect34x2x2ar c dga/ ilm6x on 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 sprim ,g)imuga9km fn2xcl1l: 5 zb ;27mqnng constant of a vibrating mass-and-spring system produces z1k) a2xm lg:95lq u,7immg mnfnbc;2 what effect 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, /cut+*mvs7v 067gbl3 memsj d-jv6kiboth on Earth and on the Moon. Where is the per -v6s6 7vmbjl v7j/e0gk*siudm+ 3tcm iod 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 system causes whj4 wb6y xtw:pg zftth(x: uzp*4* bg+9at kind of change in tgtt:tu:p wyxb+bf4 9p* z(4gwz6j x *hhe resonant 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 system causes what kind of fc,ys s1mebuc0 m nt7n0 q1(m)change in the resonant frequency of the system? (Assume no cymc c e)(n1smn msb0,q0tu71fhange 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 mass-anj+ v ty4p l ng 07djjd;mkehi5jv2l)7,6f5 gjed-spring system causes what kind of change in the resonant frequency of 5j )jmk +nh7 ij ft 2ve5d6gey,0vlpj ldg4;j7the system? (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 mass M attached7m h xj-w(-twa to a weightless string of length L. For this system, t a-hwm(jw7x-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 sc8t; ljr9u+t limple pendulum is tripled, the time required for one complete vibrati;j trt l98c+ulon

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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 of1 vg *.jd3plhlkio2 n( A is T. Pendulum A is twice as heavy as p*1 iklv.2ojgn( p3dlh endulum 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 pendulum is tripled, the time for one complete vibw xgyo 6)cp 7cg2wx*4vration increases by a facto)y4o7p6 2cxcw xgg*vwr 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 len(hj(gqlfqdyj(w pu 1a)js0 i-cq -z81 gth and mass are increased1qcj (-d iufq-slj)8qjy(z p 1a0ghw( ?

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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 freqcot xp2 4t6 b2xys+7ybuency of simple pendulum B.x 4yyps+tbc 72ox62tb Which 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 pendulum to the Moon, where tvy 79.q ofenk9he acceleration of gravity is less than on Earth, the resonant frequency of the pendulum willy9.7 nof kq9ve

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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 represel 1eko 4 8mmj:5kyga7nnts


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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 rep4s/.9x;l 0sctkcj tzkn)j ja/ resents


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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 7edc-j wx8;nrrepresents


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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 vibratios-uwhy 0du/-c n 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 fro;g )sob1cg2xw x :op- ul8)wqlm equilibrium is called the wav1lg8q : ls2wcbx w;u-)ooxg)pe'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 crests7wytp y*b9 h 5p9flyxl (7on*i p1vh:w 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 unit time is c;4u);6 nbkgxs x ( fk9hzr*oigalled the wave'; rg;x *ukgn6hs(i)x9o4bfzk 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 wavelength is them y/(jj8x2e f 9a1ix-cyiymw. 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 a1ajuk1y9dx/bw: oi3 to the distance between successiveib k1x3u1:9j daow ya/ crests 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 wavelength l3 t95fhq8jku3e 8a i0mfj2b vi and frequency f. A second wave on the same string has wavelength 2l and tra039hifej3mv 2ju fb8 itkq58avels 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 string2k0;zj6pi0 xbkvku/5i msx3fay *s 3h of length L, mass M, and tension T. A standing wave is set up. Wh3ifm6s aj u k*0sy02k;ik xpv/ 53hxzbich 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 l(qedwka 9ak0 /lx:au6ength 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 i6x au: e9a0wkq k/(ldancreased 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 under tension T. The speed of a wavu64 xzutcz75 qe in the string is v. What will be thu57cq xz6uzt 4e speed of a wave in the string if the length is increased to 2L, with no change in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is u8tb)jn y*ddw tfxmwj +y+*6r 8nder tension T. The speed of a wave in the string i* dxt8mj+wn dr8*yjb+f6ywt )s v. What will be the speed of 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 transverse wave. As an S wave i 9y-;2xnt8ckbxyom;j. ady1travels through the Ei9y2;n.;tjmxc18 x-yya ko bdarth, 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 longitudzi4-rq0 ec m2lsg4z 7dinal wave. As a P wave travels through the Earth, the relative motion between the P wave and the particlcm72 rgze4 ds-iqz4 0les 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 bdyy3oq;rm (5wjm k+ ++m (mvar3q.vais

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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 a6c,0c rvq5 wc9dy kzk/(wsp;m discontinuity wh,rk06 d z; v9ycmw( ck5wsq/cpere the 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 amplitudes pass each other on a string, hg04 k3mn+,syzxu.rhone is travelinhy hx+ 3uz sg,mnk0r.4g toward the right and the other toward the left. At the point that 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 traveling towa54blia /3bvo e f5yv-brd the right has a positive amplitude, while the one traveling toward the left has aobebb3ya fl55v/ vi 4-n 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 fixed at both endlc5,uel2adba /0e+d 7x o blz.s, 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 stri-lgs+n;z e.c5 ,xq bm uf-m(vpng, the fundamental frequency of that string willm;cx f5m,nzusq.p+( elv-b g- 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+1de o j:1jcz0z3zo xg8aanp( spring that stretches 2.00 cm when a mass of 0.600 kg is suspended f18 0a1jdopn: zj(oxagc+zze 3 rom 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 5;kgq m0mxc8 hsl-xi: N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and leq k lmx8;0isgh- :xm5ct 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 N/m along a horizontal, frb*trj2 -mooy 0ictionless 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 equilibriuomj* rob20-yt m 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 chr*32 4;zve0 dxu9pysh ) mdsspring constant 60 N/m along a horizontal, frictionless surface. The m3y4ep)xr 0dcu2;zdh 9 *shvsspring 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 oscillation?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. It goes through 10 complete oscillatioyvh) 0hg 9 p rn(om2dj g4v0-7px*puwqns in 5.0 s. What is the perirhp4(027hg *ygmpvw-0 d 9unp)qo xjvod?

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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 p;kv7s l5m4 jeforth from the free end of an ideal spring of spring 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 frm5l;74sje pk vom 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 attuua*sx1* e *vtached to a spring of spring constant 20 N/m along a horizontal, frictionless eu va sutx**1*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 is 8.0 J at this cf*3jkb*cha: vs qscyz*h276 time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the envbcj 32 cck*:zyas 6*hs qf*h7ergy 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 ss (zc2q js2cl8pring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a spsc2q2j 8 sc(zleed 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 coz 3u1wipt7b q9bhm92kz-iax) nstant 20 N/m along a horizontal, frictionless surface. kui9 a)bb-z hwq92ip z1mxt7 3The 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 hnatpxc3tuv(/n(;.d m* +gb zg4qba l, orizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. Wha 4xau/ (zlbam c ;3b(g+t*.nd,g qvtpnt 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 springalwo159 u4bpv constant 50 N/m and set into simple h bl1vaw 5p4o9uarmonic 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 f sgp iy8k j/)gi) va6k/0uuzf+emm45lree end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is 58gfmgyluk)/iz40 j 6i) k+se/v p amuthe 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 sykkeyol 1d8/a -stem is displaced 10 cm from its equilibrium position andaky 8ko1ld-/ e released. A frequency of 4.0 Hz is observed. What 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 constanfk* rw3 iit;b3b6n zg4t 10 N/m. The object is displ 4ii3rb fk6;wb nz*tg3aced 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/m. The object ;-obmcu 9eh *ni9en-c *m;h obus displaced 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 1+eq :( *rxlcuw8 N/m, displaced slightly from its equilibrium position, and released. What is the freqr*( xc le:+quwuency 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 Hzsxa747 h ;8c7lvvffpw when displaced a daf vs47lp7x78w chv f;istance 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 attached to different springs. Mass A vibraxvq1 b8 n.alm-lqrh (.tes with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplit.llb1-hm nqx(avq 8.r ude 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 suspes g+:iz9le+mgnded 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 ae+ +:igl9smgz nd 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 phqr1a6e;(1 roy6uv aequilibrium 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. Calculateov16pahaq6( 1ur yr;e 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 sqs) ,rzs(yr06lag74 8v d hbukpring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additionql s,yz8 sk0rr 7vab 6h)g(4udal 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 hard;w3hwn s )t/f/(b2 l2aye cxtmonic motion obeys the following position versus time equation:2bnw3s/a;c)ly2 f/te x(dthw
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 followin fi+)/ s /nl;b ia.-whftc ym3mqx;*fkg position versus time equation:n.+;k;il iswf-q cf yhx/m t ab3/m)*f
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 theclvwdt t;grd 0b67:u9 following position versus time equatd b70rl ug9dv6ctwt:;ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 executesjc ,fa4io2g ue9wl3 6a simple harmonic motion according to iaa g,24fwj6ulc e39othe equation $y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

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74#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A 1.5-kg mass attached to spring with a force constant of 2 p dsfw0(z 7qi5) xthgi47aio10.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from re )7h(itds5wi gqpfz41x 7a0oi st 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 complete85:xy i 8;(lopbjroph swings in 8.0 s. (a) What are its frequency and period on Eahp;x:oy(8j r 5l pio8brth?

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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 perio.gl)s f zzod,;d 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. Wh ya :56bjell k m4wz-cocs(,+pat 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. Wha.(imo p:w y auu20ob/h6la8p2nf +shot is its period on the Earth?w :/y maanui+ p fbo268.o(2lhp0osuh

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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 pe6 ti 8x36b lyi+rqc;tbbug7 h3nsiy51riod on the Moon where the acceleratbb 17 it66hgic sy3+bunti5l3xq y8;rion 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 04d; thuvw:2g v.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 forh vw:4; dt2vguth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initial angular displacem. a p/f1ielq1uent of 8.0e. It oscillates with aq1/.f 1ia lpeu 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 theoh5 3( ;/fhqtfplbx ,e wave is 120 Hz. What is the amb o,fxtq hlh( /;35fepplitude?


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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 wavtxi: u/i oy +yrt*:,kce at a given time. The frequency of the wave is 120 Hz. What i/k cyyiut:,*+tx :iors 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 a(1,jvmoud9 q ccg 1 9lbzljs /4a3ka3at a given time. The frequency of the wave is 120 Hz. What b 9u4jc1sjcd m1a9(/ 3g3,a akzlo qvlis 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 j2eu2jeo 99q zp+h l6ewhich 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 2i os+ ow)uwi8rgq 7o1of 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 wavelength ox5;ak9f8 i+ .m upyyggf 3.0 mf95g+py ; .g8kymia ux?

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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 3.0ntbuow by7m63j*bybl3z 3z mtmv (1zop *:)j/ m and a frequency of 12 Hzozj33 oz*yutbbn y 1z ltb 6(m)j37*bv:/mpmw?

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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 wa; ;kxon q5yhqhq2d/. dve 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 40(k2vhdl wo7 b2aqerbgo ;9kl47wo/ tkhxw8is under a tension of 1350 N. What x loo ;e9gok8 kv2r 4bhqt( bdlwwa0h24wk77/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 tih *3 k+ygw:x p m;q-samdnb70ension of 180 N. What is the velocity of propagation of transverse waves ami*nx dk w-3g;s 7abh+p:m0q ylong 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 t ,-+ xeimk d2hna(x0m2:q0ilo v5ax nnraveling down a 500 m long wire whose total mass ik2dx(+0movil, hix n5 a -em a0:xnn2qs
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 transverd/xe+am. 4jj4 xsbjvn-f- w:w se wave on a 2.0-m long string fixed at both ends is 200 m/eswx-4jja/ mnfwv: .b4+ -jxds. Which one of the following is not a resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a fundamental frequency of 500 Hz, *+krlmixv 2b iw4z5(uwhich one of the followiv rbikx* (u+5 lmzwi24ng frequencies 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 standi0i +jqom 0:z ye7dttx v8z6c /f45pzqrng wave driven at a frequency of 480 Hz. What driving frequency willxyd0mio 6tztr :c+ qe7vj p50/zqfz48 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 endv0b x38z.lelrj 99yt sg16 xzfs, vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the stavlegtl8z1b.9 zx6j3fy 9 xr0 snding 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 9 vzop82 m z)n-t9 vdws2,ovkeshould its length be if its fundamental reso22 vvsv9 8)tez nzwdm -9okp,onance 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 m/b )4ksty: .lqgexjx;ass density 2.00 g/m and length 0.600 m when it is subjected to tens x:; sj)beg.4qxklyt/ion 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 at u fpa9x,1 +rkxd;8 yvta frequency of 85 Hz,d8 ,uxx;a y9 pvk+f1tr a standing 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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