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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 pem07nfmjeckt-cg- /q 3riodic 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, the number of cycles per u5c;evn5acrgp24g i2j in3aajb (m)o- nit 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 equilic7 8lzh 04i(wm9xuvbabrium point is called the80uvwi4cm9b l7z x(a h

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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. s7i;96 ani*cz5nm lxr a6/gnzWhen the mass is at its maximum displacement from equilibrium, its instantaneomng57 a9x6 cn6;alzri s* ni/zus 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 uc1ua g21k/ ng/yeivx7 ndergoes SHM. When the mass passes through the equilibrium position, its instantaneous velocv /c yg1gkua1enx/7i2 ity

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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 displac vi 2y9b3.l waiqep 7l1a)yse.ement from equilibrium, its instantaneous v1ii3alp92q yes7wye b.l.) aacceleration

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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 sprid2+/s zdrxv z8d/r qn)ng and bobs up and down between points A and B. Wherd2 qsz xz)n8 r//+dvrde 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 dgwphb *0 9qn3o2zxhx (y9s,8rmf*d4t.p oerkown between points A and B. Where is the mass located when oqzr,xrwy0.nek38f4 2x(9*hg9bo*h d sp pmtits 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 sprin s i2r5l12lqung and bobs up and down between points A and B. Where is the mass located when its poten2nl q15 i2lsrutial 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 bewv(p3tam: l0xtween points A and B. Where is the mass located w(m3pxat w0lv :hen 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 m:10 0b1yscsf;zhgrc of a vibrating mass-and-spring system produces what effect on the systemmg1c1 0s hszbcf0;:ry'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 a vibrating mass-and-spring system produces whatrgtjigimmr/801+ uqx f75r8 f effect on the syq x 57 tff8imgi8rj/rgrmu01+stem'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 constaeeo+rp-tll. s 6.p;hgnt of a vibrating mass-and-spring system produces what effect on the systes go-6.lr. lp e;p+htem'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 *tz-9b z hdd6f ;mo 2r7pqqyk7of a spring, both on Earth and on the Moon. Where is the period the g p62ry 7oqdmktzdbf7q9z-* ;hreatest?

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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 what rn p87in(x jakc-:r ki :z,de-kind of change in the resonant frequency of the system? (Assume no change i7xjkir(ne--8 :pink c zd,:ran 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 0xq6f ol0n 4ojof a mass-and-spring system causes what kind of change in the resonafjo0oq0n 6lx4 nt frequency 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 maso kyoxjf62v7cr 12c7 bs-and-spring system causes what kind of change in the resonant freqc6bkx jo72r7 o1 vc2yfuency of the 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 ( sd.yeafjcvm/ ot d1e j3/18ga mass M attached to a weightless string of length L. For this system, when undergoing small oscillati 1c3 v//etj81 od.sm(yj gdfaeons

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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 tripf59rf9v2n j2f -j(bur qxn1xf led, the time required for one complete vj2vfr( 21rxnnf xbq f-95 fju9ibration

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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 isp.t4a2vkwh,*l+vkwgw l+riub+ m 9 p* T. Pendulum A is twice as heavy as pendulum B. ww+ llk 9.*,igrp4* +bmp 2utva +whvk 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 a i1r-pj3 uho(one complete vibration increases by a facji(arp 3 1-huotor 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 f b6apd zl.n1p;requency if both its length and mass are increased?b1ladp;.z n6p

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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 frequznp)ixm3( : ig*qe gddf3+ q4c8,xk h. fpty(hency of simple pendulum nipf8y3(*:cq,ex.+t p kqhgd)ihx z fd gm (34B. 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,j813nje3eyehxoqy ns*e*hm1- a 4*j al , 1kzt where the acceleration of gravity is less than on Earth, the res *ja*oyzenath1nhljj 1ek 1me *3e 4qy-8x3s ,onant 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 repres97g wrll uq /*6oi8uuwents


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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 repro 57hm wzwnovic::p(2esents


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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 representnsr;d c x41w((pu0cbps


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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 ise r1 1 g nedx 3;5x0::1llc+ahw b;6awhnmtpdt 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 fl n(-peb 3i/t. trmf-krom equilibrium is calle-.lmkf-n te/i bp(tr 3d the wave'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 calle4z7n(gypyir4 d 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 .v1v n iprltsit5;9-c point per unit time is called the wave'spncvv5;ilts 1tr9 -i.

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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 timer 8io; peszb934slxz0 s the wavelength is the wave's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave incr+4xye d:b5 p map.,rvxeases. What happens to the distance between successive crests if the spy pr5a: v,x4em+bp .dxeed 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 frequency f. A s*hszc1g jd7: up(gc ,g:zdwrnb,q )d:econd wave on the same string has wavelength 2l and travels with the same velocity. What is the frequ bsc(n :)7pgh 1:jd d r*u,:wgzcgdz,qency 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, an eqq74r f9-.2 itrshm7*jxvz nd tension T. A standing wave is seqn7zmeqh rr*2-t 9xfj 4 iv7s.t 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 lqg01,t q4zs+zoi4o xsq*sw 7y ength 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 t zg 7q1sqqo0y x4owt+,sis4* zhe 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.i uwq l19pcl;/ The speed of a wave in the string is v. What will be the speed of a wave in the 9qcl/lwu i1 ;pstring 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 .6ygxjg2 /kchg* whx(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 strih xw c(g/*2xkj6yg.g hng 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 transzg g,ldteo * 0i,m8+hnverse wave. As an S wave travels through the Earth, the relative motion between tnl8g ,zme ,dio +*0ghthe 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 waveh3d 5at7,f ilf8kze srt 1m9peof9d31 travels through the Earth, the relative motion between the P wave and the particlesm9a13rl7thzi 9 td kp5ofs e,8e3d1 ff 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 i3t8ptjykq )xmvn i76t/-:pz js

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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 thl: -vufl ,ll8din cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmilld :8fl,l-uvtted 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 eau6 klat a*cu ))7ihut r-ic1.och other on a string, one is traveling toward the right and the other towar )tu*roak- l ai6).htc 7icuu1d 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 travelv,n)kro o vpuj,/6/p fing toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitud6of),//kp npv rjvo,ue 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 ect h -jp,34hnmnds, 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 s f3teah/0 z:h-hg)t oztring, the fundamental frequency of that string will t)-:0ah/h tzeo h gzf3increase 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 sprin)++ sl goguxu.g that stretches 2.00 cm when a mass of 0.600 kg is suspended from itg .lugou)+s+x ?

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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 o tjgg7738pm3 kez av/,oj,ylcf spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let t,vm, ezack 7pg8go 33ly7/j jgo. 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 sp0dz.q0 q*adf lring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretq z0dl *qdfa0.ched 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 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 constyyr j1s .xh8,nant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to goyjsh8, rx1ny. 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 compgw-jjq5m9s 6 alete oscillations in 5.0 s. What ism wgsq 6-aj59j 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 end of an ideal spring of 5ui-xf)u mgk1spring 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 positik5ufgix1u) m- on?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring *zg+z/acob fmg:y9 w*ou78j qh j;q +wconstant 20 N/m along a horizontal, frictionless surface. The object oscillates in simpujm*9 qg gc bfwjohaz+*;wo7z8+: yq/le 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 energyjjlnpvh 7 h5e1gi-ro,es- wvho f1. 9( 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 enersfo,15 h9r7 nh l.h1(p v-g-vo wjjieegy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a hlgw +c2j.y t)xorizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium positiony .)j+gcw2txl. What is the amplitude of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m along)is97i mnqs +g a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium7+i nmsi)9qg s 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 attachegxa7. w+ z(agm cz(b)ud 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 ogz+(z x)bw gmc(a 7a.uf 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 tcjk igyaw*7un bp;* 89qr2;v9l vp0pro 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 of this rgv0rnl 9apkp*cq2p; uw897v ybji* ;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 thg.q 7uo2 *mtyj)fqum435jec oe free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kineti2m )to75 c34m.gq ojq*ejuy ufc 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 fchzqv f -vmo6b74u, gy-2cm)srom 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 and then released uzc vvb )mhm72,f--q6g cyso4?

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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 attache5e:f 9.sol gnrts(1)jdq x;vvd to a spring of spring constant 10 N/m. The object is displacedsf tosvl.j5:rx ;e)9dq1gvn( 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 xtzj /* aw,u rzg9qwfm-;or94spring constant 10 N/m. The object is displaced u zj;*wm,wa zgf tq9 o49xrr-/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 conn*r20acc5iv p stant 18 N/m, displaced slightly from its equilibrium position, and released.n*5a2 0vccpir 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.as.idxd7 f i (51uc,asumho. aj9t t5 when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by thea .coa(. dm 9 5s.d5ifih1a ju,x7tstu 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 dif)kr4pa, p.oa gferent 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 Ao gkp4)ap,r 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 stretc,:y)f,c lzb7yd +slj jhes the spring 2.0y 7bfl)zj l,,y+cds: j cm downward. 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 stretches the gp m40)yy lki(u8n tsnz 6/yb)3 lv;iospring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the total energy int(6ympi8yvg)3b /4 s o;luy nk )l0zof 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+e h qeq8eokc:bsl+l-5vo9u8 the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cme5lo+ v e+: o9u8elhbkcqq-8s 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 positiojy rtjsv) ijq2vo;td6 g-4vds-e9/ (a.8ttxmn versus time equati 9)8vdj.- i -j/2s4tt;jgvaxeoyq r6s dm(vtton:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 gh 3su- 3fz(xm28jonathe following position versus time equahagj3n(fmx-3o us8z2 tion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obeys9 qfu1gpgg0w: ie)jxj z1-;hj the following position versus time equa0q; wjg -1gguphxf9jj1eiz :)tion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motion acck.gqb9 tzw z8-ordiz8qz .gw-9ktb ng to the 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 )oz;im0 :c1ahq hn*vl of 20.0 N/m oscillates 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 byn ho*lvi :a)qcmh0z;1 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 swing ziy -cxap5hd1 rj2z,o:-hn t,s in 8.0 s. (a) What are its frequency and pe5 - xiyhzc jat,2rp:d1ozn,- hriod 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 x+w)ouyx6 a;m 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.hhv2zs. 6s)vp0 s on Earth. What is its length?

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfat h9dw)e mi6b0m7m+ tbnher clock is 1.0 m long. What is its period on the Earth?n6mhi9etm 7bwd +mb )0

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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 long2 ud,n5bfr(k e. What is its period on the Moon where the accelerae,b5 (f2r nduktion 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 ytd9jc; riad f ;u:,.ea 0.25-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 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 t;f. a9yur,;cdtji:d eo 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 b+ h( 1wi0u fds4yfx4l a/e(za20-g mass has initial angular displacement of 8.0e. It oscillates wila dfz (xu4ih1w+a4e/ysb 0(fth 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 /rxmr 6 +h.kz) 0g(u1sayxsdf at a given time. The frequency of the wave is 120 Hz. What is the amplitud0h +x(m1 y.sk /z)xrgfaus6 dre?


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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 0m10 yxfxvz7r frequency of the wavvz7 my1rf0xx0e is 120 Hz. 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 a wave at a given time. The frequency h qn5 /wfqq5u89e) ztaof the wave is 120 Hz. 9u/wet qnq )8 ha55zfqWhat 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 wak1b+h j*m wxe-9d h9hdve which 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 aa;(l hqkp s-z+ 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 w ne-;m drmm5 n/ed(5+8sywaeiave has a frequency of 12 Hz and a wavelength of 3.0 (-58d +5 myin n rdwse/ema;mem?

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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 ggs;ga5tpb) azj6:/ r frequency of 12pr:gastz gjb; g/6) 5a Hz?

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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 at 1400 m/s?jt.ffk emy 81:

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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 /z/7cr/nddrg q 9aq b3density 0.0050 kg/m is under a tension of 1350 N. What 9r/ rdbqg q/3ac/z7 ndis 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 of9 htvh ,a1haj:nh x27y 180 N. What is the velocity of propagation of transverse waves along,1hy :ah h27a jvxhn9t 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 whot76cz;lkmzwlr 08r5z se total mass iklr 67twzlzc08z; mr5s
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 lo n/s s: u/5i4nqopbwh9ng string fixed at both ends is 200 m/s. Which one of the following/su49 /b q nwsn5hiop: 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,n4ir 8 yigu+;kk/dg n1 which one of the following freq ggrn 84ynkuii/1+k; duencies 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 /fu943lobu3fvbw)c +yp4m tk observed to have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five eqwl49vf/to33f)k b myu u4+bcp ual segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends, vibrates at a frequency of 12 Hz with a standigdal*+if+ppy wm.*( g ng transverse wave pattern containing 3 loops. What p*+(*yaw l pgmdfi.+g 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*w+att-z vxaxt 98v; c/m is under a tension of 20 N. What should its length be v *azt8v -9xactt+w; xif 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 g8 cyj+ j(;ea(r a rej;y79aoxstring of linear mass density 2.00 g/m and length 0.6;e8;ex9ajgajj(ay y7r r+o( c00 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 fixed at both ends. When the string vivtk*;w gea* l1h ti9;hbrates at a frequency of 85 Hz, a sta1ai;*vt wh*9 tkg;lhending 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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