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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 procezufseppmp(7+z cg6i0zklai4+ ct4r y a40g5-ss 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 cyc(o1 jvy4gl5d y7iuux 8 n+1tb*codwy2les per unit time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement from the equilibrium p 4jkq2 uqa:jb((ik )ivoint is called thijkq(4(kj :q)ivb 2u ae

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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 displaceao fn0 sbl73.ument from equilibriuu7 0abslo3n .fm, 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 throuwm0 7v pmgm5;j+a ;ecugh the equilibrium position, its instantaneous;m c+5magjp0ev u7;mw 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 mariw082 tcg i7bb pd6w2ss is at maximum displacement from etwbg bi7 2w r6p8ic0d2quilibrium, its 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 vlr 1;e)j s0xh85:x o1tnpkqnwertical spring and bobs up and down between points A andt0lp qe 8or:1sx ;khjxnn1w)5 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 up and down between points A a83)l gf 1ansaend B. Where i eaalf1gn )s83s the mass located when its kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs uke( gkv,q0/z3 t *ffxvp and down between points A and B. W*t 0,/ef (gkvx zkqvf3here 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 an5 -,lspp1dkx md bobs up and down between points A and B. Where is -,5dlpmxsp1kthe 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-61 vej 8ihu,:yo*d9alk a9gbr )lmmh*spring system produces what effect on the system's mechanical enaib)mh ejvh6ulol1kd ,ra*:9mg8 9*yergy?

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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 produces w la3 ec ud(5u+wm:zur. w.zk:yhat effect on the system's me.+3mu.a( ru5dlzzuwy::wc kechanical 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 toxwciztfed .71;- pv;dkp (znj.(x6 mass-and-spring system produces what effect on the system's mexp7npt;( x (.ke.fv;oiz1w6zcj-td d chanical 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 .)j( qpdajdm5 z-;s4f*.nb fud aq q17ollh (eMoon. Where is the period the greatea.buq ;5z((7h l)lm a-edjf1f s.ddj*qn4 oqpst?

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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 3( bxqdacppv7 q(6,vx what kind of change in the resonant frequency of the system? (Assume no changxqv3p bpqd(7 6axvc(,e 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 chani- 5c6*pgfdi /h(ot:xfxj*ah ge in the resonant frequency of the system? (Assume ngx a5i6f(/dh -:thjc x**fipo o 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 mass-and-spring system causes nx.8snw/3 ve+a:kd ki what kind of change in the resonant frequency of i+n nk .8xkd3:s/ avwethe 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 attached to a weightless string of * qtz0*xe4jaq length L. For this syse x04q*qzta j*tem, when undergoing small oscillations

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the mass of a simple pendulum is tripled, the time required for zunq(-u2s5 /*6bl4 wlf n,rjwoirg+n one complete vibr5wl2(/zs-lu6f 4q irjnrobng+w *n, uation

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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 8diyr;m qg;9a7s;biw1ts5 u c B are 3.0 m long. The period of A is T. Pendulum A is twice as heavy as15 ;s;m9udg;rtc87ai wbsi y q pendulum 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 tim u: qguy4:1n7bi4 hbosh8szwy4;1lb a e for one complete vibration incrs7hlqyb z; s ua8144honb4b:g w:1 yiueases 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 and9a cf5cexzk( 2sqt w k. o54dei*x81tx mass are increx*oq55t1dx eaw(cfit2e kx98 zk. c s4ased?

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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 frc vyn n/6aav41equency of simple pendulum B. Whivn1a4va cn/ 6ych 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 the accel 0.+ybq.p jkm3qtbl1zeration of gravity is less than on Earth, the resonant frequency of t0z kptb mlyjb3+ q.1.qhe 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 represents qg+uiws x:(zy9 / nl,y


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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 rep52ugvlte7a i5(8n. i ak,* vjxca d8u 3jhxb:gresents


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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 repsmd7gu su k;*.resents


本题所包含的其它图片:

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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 p,n ,u s5uerp,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 eq82dinqzu,:c226 n yqk fa wewvsk 13o)uilibrium is called the wauw nfk2kcew3y6s 1zq 2nido2v 8q),a:ve'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 crests on a wave is u79 jajt5weegr 89b kcu;fy2: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 p+w iiz5e9q 2rnassing a point per unit time is called the wave's 9ne 5ziw2+rqi

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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 ta+*-i)jap k0xf px77m(d b tymhe 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. W5h8 gxi*d me hh 1w4mbe4x 5k:lmud8v(hat happens to the distance between successivemlehd e4*5 m81kxv b4w m:hgx5hud i8( 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 l and fre*l jr2vu4hn j1/ry se+quency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What +u/r2* eysv4njrj1lh 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. A sta4v ehn6urdln j0y(h :2j dl-3wnding wave is seduyh3(n2 dn-l rvj60hjw4:e lt up. Which of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and qmng. .p+fdcb2p sl8: length L is under tension T. The speed of a wave in the string d8pg.c.pf l mbqs2 +n:is v. What will 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 under tension T. T6a6dxouo )kv9; t bct,he speed of a wave in the string is v. What will be the speed of a wave in the string if the length is 6u)x9k6;ot todvca ,bincreased 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 thn59(w71x s/1xyde l ceepw iu*e string is v. What will be the speed of a wave in the string if the tension is 5n9(i7 ux*/dsw ceeely1pxw 1 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,()yqy 6f gwlbp va5e; wave travels through the Earth, the relative motion between the S wave and the particles(5w ;v)f, 6bqa ylgpye 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 8n; feyc6( miuroj t ja;0b93bwave travels through the Earth, the relarb6jj; t;u bn8eac3fm0y9 oi(tive 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 p68+ntyw 8 isrpvw+ e;is

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave pulse traveling to the right along a thin cord reojzh u7)h5 fbrvn c:p 3kth3*4aches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitted pulses5hu3:pf o)zt *brkv cnj4hh7 3?

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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 dde ;z*p0d4yd each other on a string, one is traveling toward the right and the other toward the left. Adp z0yed;4*d dt 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 eac85s)kmi4. xgm ogx0tx h other on a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negx.t 5xkmixg )sm8 go04ative 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, t-dnjo.os3 ;e such 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 nc simyg+)ea 54vff t,m9xwu1:zk 0j2violin string, the fundamental frequency of that string will increase by a factor ozsv4je 0k5u2+anf 9cfxw yt,g:mm 1i)f

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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 when a mv3/fypdc 8g; vass of 0.600 kg is suspendedypv /;cdv8 gf3 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 fic w.-qw21 es/xp.cbze8ut; horizontal, frictionless surface. The spring is initially ;zew/1xq picctf wb2e-s 8u..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 spring of spring constant 60 N/m along a hos.p;cj 9b. gwwrizontal, 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 tpwjw.cs; gb. 9o its equilibrium position when it is oscillating. What is the period of oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60k9r 95gj6dn- +)atez;:n4-ls ccdv d zu0zgs n 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 thnj9rg)d :c0ng-9d;nt 5s6+ zcsledzkv4u-za e 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 oskz l gl r4q/l:c15egk,cillations in 5.0 s. What is the pkc l/kqr4 5:g1ll eg,zeriod?

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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 fxo -a); ehwaq8rom 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 from its equilibrium position8q aa-xo;wh )e?

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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 4i0nmgv xxo(z/( 4h vka spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscil gvv 4xxmi0( kn/4oz(hlates 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 ampl-q/gns+pt5atj*;xbcg zca j3wf-v 81itude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system isx/;*b 5g3fgw--n ajqjt tacsz+ c 8p1v 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 aip+h l 18kxq5j t,n2us 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 a 2 hjks 8ilt+pnx1qu,5t 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;vo,9xufw 3 az 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 u,9wf o 3;xzavat 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 end7e nb .z3ccbi3s.zsw2 of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitudbwcb cs3.izn 7ze 23s.e 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 o .z(pyfhs8a,w qau 2gni -7nwq7r-h*; duwr5horizontal spring of spring constant 50 N/m and qwo8*wqanuy;rd 7hi2 s.hn-f5r u(p- wg7a,z set into simple 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 from the frqc + 3jk*glwex)i8 er 6nra-;lee end of an ideal spring of spring constant 20.0 N/m wkc)ri8nqeea+- g3jxrl;6l * with an amplitude 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 fromwrpysa2c,x1 kdv55l) its equilibrium position and released. A 5,)kywal p2 1xvsdrc5 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 conli2j imghehaz.r5n,.5- f,j w stant 10 N/m. The object is ,h,efaz .li w h-j5.5nrj2gm idisplaced 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 objem18mty + snt0aqn s6*qct is displactq1asn+q yn*mt m86 s0ed 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 springnf4jxhbtg+, x nsd2, 6 0mdmv. constant 18 N/m, displaced slightly from its equilibrium position, and relnjnd, gfmb0v.+hx64d,2s m txeased. 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 when didru/75)a*ztpfo, hf w splaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attainer f wdut)h,7/5pfo *azd 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. M c 3y;q,- hkrtp19a( urmols4fass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibratefr4 3altmco;u kyr19sh ( qp-,s with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of A compare to the maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mash 95/q iu5rck h26k0t1q lskhis stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the period of oscilla5609ukqihkk l1r hs h/2iq ct5tion.

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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 rh204 unh:s acmass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance 42hnshu :r0acof 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 sf+7 (+pbsdpgi- fs v9k+kciq (pring. 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 down its eq+ (pg 9q-++f(vbfsdspii 7 kkcuation 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 versba0awnoch6 2k6u :- pous time equati6w oan u26phk0o- c:baon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 position verdpvp-g .tc3n.0r l q(caf7lx*sus time equativ 7.-3 p glqf *ptdxl0ncca(r.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 t.er-ha k4m q,-,*hg8a fnndcihe following position versus time equat ,a-- . *mc,n kfn4iehagrh8dqion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ov6 hg7s 3 mr-ojbs*z y(r)hrd-f a spring executes simple harmonic motion according to the equatrvzrhh-3dg 7js(bmos6 yr*-) ion $y = 0.50 \; \sin (18\pi \times t)$ 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 attachf)nh 9:a xhjr+w-d46lsn6vfved to spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionled9 wv+)xs:rlv-4 j6ahnhfnf 6ss 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 complete swings in 8.0 s. (a) What a( njfxf8 7gbc1re its frequency and period (nj8 7cf bx1gfon 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 isc2uaq gy(/t4 w31c gou 28.84 m long. What 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. Wha/*mm,lf zwjs*oo fyh4t5f 1q9t 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 inp7by x jh .08p-tjlg+s 1.0 m long. What is its period on the Eart .p-n+jhjtlp 7g08yx bh?

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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 grandfagyhl rv i8g:+gj:3bm0 ther clock is 1.0 m long. What is its period on the Moon :h3g r0vl8:+bj migygwhere 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 spherical mas(s b+ g( /lyp.d imc,hnzp*4mns attached to a massless string. When the m yh,(*(zl g+mnbsp4cn/ip. dmass 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) 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 maj j5arwahm2658 pvk.6fvn v;r 8 b;cgiss has initial angular displacement of 8.0e. It oscillates withp;fk.a m85 j2 vn6var c5vi 8b6rj;hwg 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 give qq1gh+. 00k u0-thjpc;ykkjbn time. The frequency of the wave is 120 Hz. What is the a+0kubp h.tq hcj kg1;jq0y 0k-mplitude?


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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 give,/y;fmmoed m1 n time. The frequency of the wave is 120 Hz. What i;/md ,o mfey1ms 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 iaqfju0a/x2m a21zh j 9;8dhg0ech(d at a given time. The frequency of the wavdd2f h/z;2iamaqaexj009 ( 1ju8h gche is 120 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 of a wave which hx9b 8q65./olqq mro2tpj m 6j; etp9q12xsjuzas 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 w pd8hezq(o/( zave 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 8ffevd,th. s7wr/ g.nhas a frequency of 12 Hz and a wavelength of 3.0 m?.gf.,/ e7nh8trf dwsv

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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 frequenc.aki)a+z w8ik*ql( g4 i3ey liy of 12 ai8.lky)+ zka*e i 4lqwi3i (gHz?

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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 igi19h0qt0wf 2.5 m wave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass den g o.7c1bin:;rtw;otnsity 0.0050 kg/m is under a tension of 1350 N. What is the wato ; 7c.:n; oni1rtbwgve 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 j d5 ansa h5.2n9)ve7nsn z:ip6.0 g/m is under a tension of 180 N. What is the velocity of propagation of transverse waves along sp inh2)v:nad5sje 57a9.nz nthe 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 as9u/6c0fjw 9emuw1 kis 0.500 m is traveling down a 500 m long wire whose total mas j/9m ku0a9esw1 fu6cws 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 transv/3tz (w)wbenjeu;h- ferse wave on a 2.0-m long string fixed at both ends is 200 n(3uew zjfw/ -;e tbh)m/s. 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, which obisqj 3m h,,vx9 sj993r sj6c;o)qyosne of the following frequencies can set the string into resonant vibratio3,vsoqohsb xs9mcj 3y; ij ,9 r96)sjqn?

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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 fou-p ipuv ugrayez06q l;7-:gm)r equal segments in a standing wave driven at a frequency of m7ey)g :- ;gzpai pq-0v6rluu 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 botog ; .kih3*v6clpot 8:uz9bokq w7q*;bjq:sl h ends, vibrates at a frequency of 12 Hz with a standing transverse wave pattwq73loc lhk8q ptb6*o:qboj ;9.kivsu; z:g *ern containing 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 N. What sqf/i g 0 gvd8wlc65-gehould its length /-c 80 f6vg eqwlgig5dbe 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 2c6rticvur /9( .00 g/m and length 0.600 m when it is subjected to tension of 50cuct/v i9r6 (r.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 stri:e+x9yvy dgq4ng vibrates at a frequency of 85 Hz, a standing wave with five loops is formed.x:qd 4yg ev9+y
(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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