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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 pekx2to *t-gy pclu-p4 -riodic 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 unit t+ui r-rwy 4)in5yhpt.ime 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 bmi7cdffd+ 3)h9ggu m9zo mji/( j*f5equilibrium point is calle mmfj(j*ioffiu 5 zddgb99/g+mc)7 h3d 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 uny5cx 6l4gm5oa ri:u k0dergoes SHM. When the mass is at its maximum displacement from equilibrium,cui:x40kgm565r a l oy 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 passes3c im(hq(boev b; :5ls:(b kjh through the equilibrium position, its instantaneous b(ckji;(bv hsl5h ( q3o::embvelocity

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at maximum displacement fr3 mu;dfx4z sdtvj*jh/l : 6p,/,x imepom equilibrium, its instantaneous a,pjd3;st6,4j m/el p d:vizxm*/ uxfhcceleration

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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 z(5:/qttstdtns -/vu re.k. pvertical spring and bobs up and down between points A andt(: k ttdtes-/p.qvs5u. /nrz 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 k4 2km3j+l3ygkkuebv.v,7zh up and down between points A and B.zgv7 kuv+b2jk3 4 ykk m,e3.hl Where is 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 3 tc jh+zi ./*yl6zbugup and down between points A and B. Where is the mass located when its potential energy is a mini.g6/*ublz jczit3 y +hmum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down between points A an;untz ya* .zf snedc36hs2p7 6d B. Where is th;zcn.e tas* n7dfz626upysh 3e 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 vibe *2i.zb8og e.qqu +e8xao g-w-p/pn vrating mass-and-spring system produces what effect on the system's mechap8e e q-/g -xwiog2zovb+*8q.u e.anp nical 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 vibr b+zx2woou o)ru,2v5:qhoup)ating mass-and-spring system produces what effect on the system's me2wxo)z:u u v,bp2uooq+r5) o hchanical 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 mass-and-spring system popz442c zj2u.eu l3spx,fg *zroduces what effect on the system'2z4zscop42u.*g juf pl, ezx3s 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, both on Earth and dc :chiyjkj+6h34q9h .m 9tmdon the Moon. Where is the period the greatest?h: dck99hy ij.c4jhq+ 6d mt3m

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constakh/,(vvnu6- xui:e; kabw ly.jg)t5wnt k of a mass-and-spring system causes what kind of change in tb6,ye.ujwx) nv5v/ khu(k :l -ia;gwthe 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 change ins;p4* uoqmpw np /b+b2adf+dd k+v8k0 the resonant frequency of the syn k d/omw8* vbs4pdudb0kfa++ pqp;2+stem? (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-spri3k/ +ebbg6o pvng system causes what kind of change in the resonant frequency of the sys 6b 3+pb/kvoegtem? (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 weigh) 6*wcc(y6k q0wx6 ajqlo8pfhtless string of length L. For t )f6(*0jky6hqpcw 8x6 cwoqalhis system, 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 one comp 6z-bn8c, aguslete vibracban, szu8 6g-tion

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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 loixp,+ +qvuyo )ng. The period of A is T. Pendulum A is twice as heavy as pendulum B. py +u+x,ivoq) 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 ngd-lnra,n6t /mjz6;7biz o,for one complete vibration increasinz6, - jz;6gdt ann7r,lmbo/es 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 freque8+ 0c27kz9e))jhm we n)q2a cnuvsdlancy if both its length and mass are incc)dzheau 0 aql 8m 9 vn2nkes+7c))2wjreased?

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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 tpm j.iut-(w aa0mz2n vt2mp9 (,odz*fwice the frequency of simple pendulum B-,m9t2f( (ma*t z i.dpomj u0an2 pvzw. 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, vm.ewxj6sg*(where the acceleration of gravity is less than on Earth, the resonant frequency of th.6mw*(ejvsx g e 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 reprcv cj*hb2g1, jc2m i2iesents


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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. 11-1tba/viv 4z)j as;9u ,c represents


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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 represent+: kctt9ww/jhs


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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 ,(2f2-tu h7 r yu)ddzulj+otz 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 maximum displeu6 enoac+d,o7f ;a (bacement of points of the wave from equilibrium is called the aefoo,bcn;(u7 a 6e+d 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 successivbevavm ;t0d j9n s+;q8e crests on a wave is called the wave's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wave passing a point per unit time is called thzy+j 8x:* wzhjvil+1f u1ujt ;e wave's+j f;ivlwh+1jxj8t:*y uz zu1

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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 wegp.- /lk- nskavelength 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 increases. 2 ,a sgvtzwt1i ,ja4z8 What happens to the distance between successive crests if the spet az 48 ajtzw2s,gv,i1ed 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 *2ht(3xu:9 reuyl kupquency f. A second wave on the2u*ky:( h rtlux9 epu3 same string has wavelength 2l and travels 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 string of length L, mass M, and tuvibf6ii;.s; ension T. A standing wave is set up. Which of the followifvui6i ;s.; bing 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 tensionl grt2.d,t ( rczk9yuolnb99: T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the td. 9g cyl92(lb zktr9rnu:,omass 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 undcl5+w:3 xu z :m wxmp/ccef4g8er tension T. The speed of a wave in the string is v. What will be f:mmc5 czwu+g 3e x84px/l:cwthe 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 under tension Tr*uwebqkb 34( 9x (lem. The speed of a wave in the string is v. What will be the sx4w3 e9q kmlbeu*(b(rpeed 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 ok43l;2l 3upsv8bahtwave travels through the Earth, the 8 u ol2vat;kpb334 slhrelative 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 7(c as uotzng2 97bh+hwave is a longitudinal wave. As a P wave travels through the Earth, the relative motion between the P wave and the pach g+(t79hso 2ua7nzb rticles 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 isxi v)0omau c22

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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 l2 v ze.6,uu+f ,mxgbyalong a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the refulu62,bmf x,.+e ygvz lected 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, onevzs-+/0wtlm w is traveling toward the right and the other toward the left. At the pl-wvz+s/ 0w tmoint 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 stringq.x7b 9z ospj). The one traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative directionjq .zx)9 bo7sp. 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 ends,3);+n.n*sr gu6jziww v tbhj: 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 fundama 4lr0+fm x*6s dve8stental frequency of that sxf rva46t08 msd*+elstring will 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 m xu -lvugc 2e.( a0n(dmeuw28of a spring that stretches 2.00 cm when a mass of 0.600 kenmu(cdae2.- 8 g muw20vl (xug is suspended 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 od,88vbxu5t2 ctvx-blf spring constant 60 N/m along a horizontal, frictionless surface. Th2c uxl58 bvvxbt -8t,de spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the 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 Nyl6:8x a: 9y*z fbnnng/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 lz :y8ayf:6*9nbx nngto 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 constvrl zi4h++m 1l6o 51eaxsu fk5ant 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 go back to its equilibrium poieu5vs 16 1 xh+lrfzolm+a5 k4sition 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 c(y i3zljjo5)ghp +p;komplete oscillations in 5.0 )op5 pj;h(klzg+i y 3js. 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 end of an ideal spring of sprine 5erc7 kti19awv2k v6nk7xu7g constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when iuivv9 71n2e 5aw67cekk rk7x tt 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 attached to a spring of spring constant n a1e1 20c6-kknsubsb20 N/m along a horizontal, frictionless surfac-ks ne6ucna0k11 sbb2e. 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 time.aov)d wv/tx d24gjvp6(b(j: f b(,v hf The mass is cut in half, and the system is again set in motion with a(6dvv v:f xbwdjpj/(2at) f4(b,hg ov mplitude 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 a spring of spring constant)9kf ud8 b3l, aefjox4 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the amplitude of vibratiobu )4edjfl8a3,o kx9fn?

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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 d2zci4*e)5apufy 1 uiwq gu3820 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s atqi ea y)*idc1w 3uuzu8524g fp 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 cqbe 3u,nc h86end 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 totb6cnh u8qe3,c al 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 thexfa vkf,w,+j/ h *fos+ 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 thiswj,/hs f+,f+x ovkfa* 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 forthiwolf;no)n (9(wv c;c 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 maximum kin;nnof9 ;(wv l)cc(woietic 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-sprin.x ( y1o8rsb+vry9kqz73uc xx g system is displaced 10 cm from its equilibrium position and released. A frequency ozs8 burxv.x(3c1kqry+x79oy f 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 constant 1fccygw0q//6fi0ep r10 N/m. The object is disppegf 6 c yiqfw0c/1/r0laced 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. Thetggop6wn )l 5c( oxf** object is displaced by*n6wxo lp*tg(g5o cf )
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 sff 7wf*npd6 m7pring constant 18 N/m, displaced slightly from its equilibrium position, and releasedp mw7 ndff76f*. 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 oscilla3ja0x* fy rfq3yx p+,htes at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilix pfh+0*fry qyxj,3a3brium 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 difz i63 q7(hsgqj/ n5c;2x nfklv -g(triferent 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 to the m vzcs qi3n;g 5t-f6kj7/l(r 2ni(h gxqaximum 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 massrjqcja05 bw*9 stretches the spring 2.0 cm downward. The mass is thebcaj9wr *q j05n 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 thenc6+;f ypx(kf spring 2.0 cm downward. The mass +p(f;kycf 6nx is then 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 suspended gd2pstof.xw *; a(:fhon a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is thh fw2dp to.a*gf; :x(sen pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obe h)z:: j6amzgrys the following position versus time equat:h6:)zz mjgarion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 folloib/ 0tg ;t;ecvwing position versus time equatio;tt cie vg;0b/n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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/3 lg;c.ig,axqh.6vxj (li zqmk c67o motion obeys the following position versus time equatio/v gzk,xxqoa(6l.q7il m.c g ;cj6h3 in:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 enddee 2xa)h so,;zv o7-w of a spring executes simple harmonic motion according to the o-eos 7)e2wz,vd h; xaequation $y = 0.50 \; \sin (18\pi \times t)$ 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 s l-t mv)tut/77 8rjynapring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, t/ya 8r-jmt)t ul7ntv7he 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 t1q. y .mn-qjhswings in 8.0 s. (a) What are its frequency and period otq nhm.y1-q. jn 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 w6d;+q0/xcy gxifmp-pt;qz/ 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 2.0o 1elmgbx./ yw0 (fog( 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 grandfather clock iszb;jjzv1, -drr7j u :s 1.0 m long. What is its period on the Ea:rds,v1jr; jbzj z-7urth?

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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 perijst2 x xm2ix-.+dgls,n4 )mfqod on the Moon where the acceleri-l4d2) s ,smxt+nfxj g.mxq 2ation 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 mass attach,gde ct-a/ u3oed to a massless string. When the mass is displaced slightly from its equilibrauoc-e3,dgt/ ium 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 rrpfrvb2+fx,v s h8d(,o*v s 2mass has initial angular displacement of 8.0e. b+s2s f,d8r(r2vvov f,*pxh rIt oscillates with a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequency of the wf4a(3xytmlwq xl b)mte2, tu;.h .sn6ave is 120 Hz. What iw yl .l,xuqxt6neb t hm3am2)(4stf;.s the amplitude?


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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. Therq21asm2e ;ky 5yw znf8t 1+h3(noump frequency of the wave is 120 Hz. Wm;knsm8opn2ry1z w+ e 21h qf5 (tya3uhat 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 of the d 7ysqqwm;, j :ttjv5 y4yi)i6wave is 120 Hz. What is v57yw jtsmy4y:j ;,6q ti)idq 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 +swz 6 k0bkr8v m.-ljyms?

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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 obwqs6r8hz,(ugxrj5ng3-qy k 9br1 / if a wave 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 has a fr(z y90fqzmso1z ;f 6vpv2+vl qequency of 12 Hz and a wavelength of 3.0 12 (pzvfzz+9mofq0 ; vsvlyq6m?

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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 )yw3vapk p 1s0of 3.0 m and a frequency ofvp3 ws10apy)k 12 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 t. bea fh:o;vzwq:0 2mlfuq ;+sb9q8wtraveling 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 0.0059b.9gkrl+bx .xmpnv p34 sgg07ge3vi0 kg/m is under a tension of 1350 N. What is the waveimk.gbvlggv3r g3 7 xb. +n 0px994sep 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 ifw nne 7dx*./d* ozqm9eh.de -(c2t mas the velocity o ed ofhd*w.x et2-z7nn(ae9 m/dc.mq *f 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 isnxuolqd)0p1; z /si6bwz be.- 0.500 m is traveling down a 500 m long wire whose total p-bo wz 6b szn).e1/u;idq xl0mass 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 transvyo*q 5nn x-0fcerse wave on a 2.0-m long string fixed at both o* - yqcn0xnf5ends is 200 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 ozf ;v r6fnw2hbv1snz56zx2 r-ne of the following frequencies can set the -z5rrvw h z s;vx2n2zf661bnf 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 foh,rfo,l9is (qm gne d(skhv2;)*4 hnnur equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal segmeihr9) h;2((e ogkqs nm,n nd,fl*vs4hnts?

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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 oap4rfzm7c n + u7p:m)tzi0- n4xo,rd sf 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave patt4f- rc: oprszm7)74 ntu npx0dz,iam+ern 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 m..tv qw*iyes3..mto whef*n 0h m)5ia tension of 20 N. What should its length be if its fundamental tnq m*ht)wisy..wme5.3 voi 0eh f*.mresonance 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 harmoni bmck3 :vpxfnlr7ziw59r3-4k cs of a string of linear mass density 2.00 g/m and length 0.600 m when it is subjected to tension of 507wp-3ifk4:m 9x b5vlrkr3z cn.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*moil:x8j+a-wno1g4 tuh ky 7 the string vibrates at a frequency of 85 Hz, a standing wave with five loops is for*18t +h n7 olo:akjmiugwx4- ymed.
(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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