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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 process is cal8 mk9;f camx8uled 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 p lx)z. u4cy*jder 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 displac3yd ;la/m 1ghphi213xnk,bja r7 bfmf*;yy 3t ement from the equilibrium point is cagmbn* dj fihly/x3kp h2tf,;y317a m3 y;b r1alled the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at its maximum g; 4bujijl57itr/hwdh by0:pm rb2 5-displacement from equil-257 wtijh:lp rgmdh0u4byjib; 5rb/ibrium, 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 throughznlz*mm +7c+r6mw l )s the equilibrium position, mc zr ml l+76zs+mw*)nits 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 dc0b:d n4t+h1fhrkf/j n 3,m:os.hmgg- , aarjisplacement from equilibrium,dm kn4ar +o1h,/jh,: .a:fg3htcjs - bf nmgr0 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 vertical spring and bobs up and down betwesb(4 n0exjjg/93ht iqen points A ant4jsxgj/n qb0(e 9 3hid 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 an)ouk /ecj 3cw2b p37nyd bobs up and down between points A and B. Where is the mass located when its kinetyk3boejwu p/ ncc27)3 ic 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 up and down between pointk02bm hg qbp:9s A and Bqgb9k2mbh 0p :. 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 i6 r.es87 waq xxm39oca vertical spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a maximu7acsrxi8mwex 6.9oq3 m?

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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 p9.oax /e ipra 3zok5v/roduces what effect on the system's m9eopvar3/5 a. /oxkizechanical 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 producebd 5e n:oof 3qma4- w4cjpqg46tl*pe2 s what effect on thd*o e:24qm56b q ln wopefag-4p 3j4cte 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 spring consb0+zvd av r: hr5ih9s4tant of a vibrating mass-and-spring system produces what effect on the system's mechanicalbs rr :ahvi5d9vz0h4+ 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 xqj td4fjc-8v7n (u:ra spring, both on Earth and on the Moon. Where is the period the4n(tr 8c-: qj v7djfxu 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-andan9gsbc9l.+ zisvi24tv(z s 4-spring system causes what kind of change in the resonant frequency of +(4i2zsn vi9stgs .ba9c4 l zvthe 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 98nsnc3q-*rtt95;n u 0 +eaz, zdalttl5v yjysystem causes what kind of change in the resonant frequenv9je5dnl9z q3y-8 +;0 ,ta atnzr y u*ctls5tncy of the 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 amplitude of a mass-and-spring system causes what kikedr;( oj00d.c7kta3 abhthi t-;1lu s pp;6wnd of change in the resonant frequency of the system-b0u6p0d k(i .ath t s3t;e7dwkoprl;; cah1j? (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 weightle-vfgwn z+ um3n.5nz .vss string of length L. For this system, when undergon ngv5+zmf. uv3 z.nw-ing 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 c0 fy* 35m wljl;cuvf0yomplete vibration3m0v;jfyyc l* l5 w0fu

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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 oe)l)sksc6; f4nwj0tl imu g(2f A is T. Pendulum A is twice as heavy as pendulum mn)su gls0fi;e( 6t cw)4kjl2B. 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, 7s y070r0i1k5 zl;dp .ipxetn itxus)the time for one complete vibration increases by a fznx0k p;ie5t)r0yup71l7xsid0is t . actor 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 it sd:9 j5sf7vmass are increi95sjtf :d v7sased?

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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 fortp35u(tv0(w6qt*i hi u g+ +pcz0xgewgh at twice the frequency of simple pendulum B. Which statu*5 pvz 6x0h(w++ (ptw3u0gitcqi eggement 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 thn7(o zf u+kxf wu4vx(9e Moon, where the acceleration of gravity is less than on Earth, the ref(fk(zu n9xx 7 ow+4uvsonant 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 re(n+n iz k+.:v -xpgt2jyqv1owpresents


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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 represen y4 +d y67l. pxy 7d/loitk2fnlu82bgtts


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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 representsue70yl h1ia ) kyqqry hg:03q2


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibratio:1b-3 :ya8anoaw;m; h gaewv on, the amplitude of vibration 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 maximum1o43 u bci d9twlqd2 f)r7byc7 displacement of points of the wave from equilibrium is called the wavrcit1 7)l u q9bob7fdy4w2d c3e'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 called the wave' d)lv7hh;uj c01 /mk+0tyiqme 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 x bnc-sfq;anxq+*+ qgzzhg;de 97+*lpassing a point per unit time is called the wave'l xh*;acqq-* zxq+7 9eg+ gbdz;nsf +ns

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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 wa+w5 3oqnl ziauhmu+50velength 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 wa *o9omw ygmh0;ve increases. What happens to the distance between successive crests if the speed remains consw9m om o0h;yg*tant?

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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 wavelv:51jk. hbtbakudy .)ength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency oyvukhj. dt kb):5 1b.af 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 terw jfjb(sko;;4zc*g +nsion T. A standing wave is set up. Which of jjgs+;o ; (w*bcrfk4 zthe 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 walw3qyghjc*9( 3gr ,zmve in the string is v. What will be the speed of a *hw,cgg j3zm (9rl3yq 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. The speed of a wa sc)dp ketv fy6xq/6v/qmh0,y97f6j jve in the string is v. What will be the speed of a wave in the string if the length is increackv0jp mqhf /x 7v9e,qt6 yjy )sd66/fsed 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 i4 0m85 dyb0ttfhzoz8 ds under tension T. The speed of a wave in the string is 08tfd0yhdm5z8zbo4 t 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 t 8qrfy(,7 q;kxg83q9a uxy bjlravels through the Earth, the relative motion betwe a9gjx(7,xqy b;83y f8 uqkrqlen 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 through w,ns593w f2xojdt8os s,j8 xo the Earth, the relative motion between the P53sxwd 9jf2xoo,s w8o , j8nst 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 is3 ltboc;-ydn5 jhq n24

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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 discontin tvfj+t08 zjo)tux ka/: 9bk3zuity where the rope bec39a: jz8 )ok vtfzukt /xt0+bjomes 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 2cy-c.x7r6e c*v jzie/-tbbf equal positive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point/bcicec- 2bj7v -rt*x.fe6 zy 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 ons/ qfud q3-xi3wn0 p,we traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. At the point that- wn0xqd3p3/qsuf ,wi 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 strup0ti/s(yd 1j ing fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundamental frequency of tha j)) sgci1p czvedn)-9t string will incpvn)d9ccge -) jzsi 1)rease 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 stretches 2.00 cm when a mass of 0 yls bl3cc2thlc59) c;.600 kg is suspended from y53ccls;h 9t ll cb2c)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 hdi6toxs pwb35:rcd8 ) orizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.53 xrdpo 5:t6w)8csdi b0 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 horizonta.ab 2 go0nr*hu ;+pbydl, 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 posiha2* db .y;r0goupnb+ tion 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 s(z gjsk8(e0z of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force(s e8zz(gj ks0 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 oscillations in e5o4)ff1egy0jv b+v2di0ske zk ,j 2m5.0bvimj2)5s y2djk 0o +ek40,fgze v1ef s. What is the period?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free enzt7l-n plyg29d of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is tz2 y7gln l9tp-he 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 attachedkrhs.9*t,0qrgx d0ml to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed00.hts m qg,drk l9rx* 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 al(5)lg e k0.xr8berrm xox43emplitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy o(elbm530e8. rkxr)gle x x4ro f 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 8z5b txxugj8v9 la,n0constant 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 posit vbzgu5lj0,xn988xa tion. 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 2ik+vd4sop1/ap0fj* f0 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potenti s fvkipj0*doaf14+/pal 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 attachedn, zucke1xi2 / to the 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 total mechanical energy ofi2,uk e/z 1nxc 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 spruaspff 97e d5;ing constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. Whatf9sef75 p ud;a 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 n 1j9el c1tlj,and forth from the free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximuml t1ljc,9 e1jn 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 n c-yf6iflsiztr66tm ; w; 37y10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What fr f-l;7iyt66 rz ntyif3sc;w6mequency 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 con6yl6rl400da:m kdl ) xldir+dstant 10 N/m. The object is d0l6 l k4dm+)lidr6ryx0 la:ddisplaced 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. Thncy+knvu (4. pe object is displaced by kuv+y. 4p(nnc
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 18 .* jvn()t.;ihv;arhgtvc 5hn N/m, displaced slightly from its equilibrium position, anj 5 ;.t i;nhhvcnh ragv*.(vt)d 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 anpo2v 3;3dh0k scx7b s frequency of 1.27 Hz when displaced a distance of 2.vb c72 ss;hk30 odxp3n0 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 atrgu f79c c-x:ari95wotached to different springs. 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 16 Hz. How does the maximum speed of A compare 9f9a iccxu5: -wrr7ogto 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 susvbet) cyu8 (6opended 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 c6 eut 8c(vboy)m 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 sust, mo6f (evo2 kr3jfw ,-wefl0pended on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then 0fl3e6w-,, vrj(ftkeoo2 w fm pulled an additional distance of 1.0 cm down and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspe e4h0 xrj60iobb4l+npse )ab( nded 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 and released from rest. Write down its equation of mon 4+ejai)bob(04slbre6ph x0tion.

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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 pm+i zq.c.u9zn w)j0vm osition versus time equat0m.9cmuq.z)in +w zj vion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmoni5ny 9v(beul 8v-p5gi ic motion obeys the following position versus time equa5yl9 vpgiiuv eb5-(8ntion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 u8rbr8b2n4w:d ffu s(obeys the following position versus time equation2 u8nr84ru:fdb (bsw f:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmonic g4:lqp fv7 cuz/vu2c /motion according to the equatio4 cuzv2u 7gc /ql/pvf:n $y = 0.50 \; \sin (18\pi \times t)$ 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 20.0 N/m oscilla;brrl07h (e)k cza2n ltes on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the spring is stretched by 1lh;r)cb lzknr a0(27e0.00 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. u n9-bri4 itv* (a) What are its frequency and perinrb9ti v4iu-* od on 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 period on vqn),yrfy/e4 my p2ij;tc3 .q 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 is its t /pgv v.,s(ejvt ,3cqlength?

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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. What is it1u)awx 0r*d dfs period on the Eaxu 1ar )fdd*w0rth?

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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. Wh u mk73ykrc+8jel+zv8 (9 mjwjat is its period on the Moon w8j (j 8euklyjvkw3r7zmc+9 m+here 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 spheg;h4n-ppq 52aeoegur 4 (l/xzrical 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 f/2-u4r ea5 pelnhpg4z( qgx;o requency 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 20diggv1w863icty:1 6-cbdc3 /mimj-m6kluy p-g mass has initial angular displacement of 8.0e. It oscillates with a m/l81-jbuidg336 m y 6cpmd 1cyik-ig: w6c tvperiod 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 b brbw .6cg:*h9pye-v the wave is 120 Hz. What is the ampg6rhb p : .eb-9wby*cvlitude?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequency of the6rmz*t6 sam8u:mw ta7 wave is 120 Hz. What is the wa 6a 7us*8z tma:mtwm6rvelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time.g2*4+ )l;(wi. mr4bmv bpodfyt: oie t-+ wfyo The frequency of the wave is 120 H(bv:obo l*+-o.+ e ;my2ffi4dptgmwr 4y )tiwz. 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 period of 6.00 m h6ne:zmq .8cls?

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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 ofq5wv ;jyxh4q 1 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 ofp)s;2g pd3ed wx5 uar( 3.0 m; psx ed5a23) grdwp(u?

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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 wavt0o:wr /ja7xv elength of 3.0 m and a frequency of 12 H7jxv/a w 0to:rz?

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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 traveling xduzuonlm 5+5z0; h q4at 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 densu(- 0:t9r,vk9hva gchmf3lizity 0.0050 kg/m is under a tension of 1350 N. Wm39-l: 0 ktuhzh,(cvgarvi f9hat 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 the vhvvgl16q0 1fby-o otew1zfv0/ hk ,9relo6ghe, bv- v1 qf/lk0rhyof1t1owv90 zcity of propagation of transverse waves along the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m is traveling down a 500 m long wire wh;)f7t b icnf9:.x,awexeht9 yose tot b:e)xticw .yxhtf 9n;af e7,9al 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 propagatix0uufn ;(w4bion of a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Whxbuu;0w(i 4n fich 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 one of the follo ylm2y: (rkx/pwing frequencies can setmly p2 yx/:(kr 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 havklv2u4y)g q7je four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave wijk)74q ug2 vlyth 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 fr3yqaicfin )1 aj1 xi1d 3t0*(h,crx lhequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the stciq l( i r xxh1ca 0n*1f133hid,tyj)aanding 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 /k23 )bt bracurz)u4 bof 20 N. What should its lz24k ru)c)bb 3t/ubar ength be 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 x3ukru(ceq9/ a .nwg75 )z vgqv+6is.dh )u jaof a string of linear mass density 2.00 g/m and leng/ u7uhec +5z vjqg r.g9wqxv)s.)i 63(adauknth 0.600 m when 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 2.5 m is fixzzl2nr*u-o x;:ey q8 ked at both ends. When the string vibrates at a frequency 8y *n:xlu o zq;-re2kzof 85 Hz, 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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