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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 hz-2 noo. 746ixkfr ngprocess 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 pen)m3nitx/qk3kh g z+7r 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 equzu 3(fv.vf mr,ilibrium point is callezu,r3fmvv f .(d 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. ng;asys m4i /8jx-. pvWhen the mass is at its maximum displacement from equilibrium, its instantaneousp- 8ys4 xa/jimsg;.nv 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 mb)npsz0: 1mumass passes through the equilibrium position, its inum)m zb0:pn s1stantaneous 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 rj(lep xz/ 9xnm081 j ;mv my+f9jazc3the mass is at maximum displacement from equilibrium, its instantaneous acceleratiy zj n c38me919f/ 0jl+xrzvpm;(xmjaon

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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 betwee2 7 9z g2twof0gvkr:oyn points A and B. Where is thg2 o o2 kwvrty9zg0f7:e 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 im *beh6kuf wzqu/de:3q) r0hbni:1( points A and B. Where is the mass located when its kinetic en*f:wb6: 0 /ehq3uemi zqrhd )b(inu1k ergy 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 wmu5-b g 6dott0 +4p, q).sp3 xmmcnelspring and bobs up and down between points A and B. Where is the mass located when its potential energy is a mm o+eb.nutl 5ws04xpm q63 ,t-dc)mpginimum?

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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 toyrdiiqb,z (85u 4i*xe a vertical spring and bobs up and down between points A ani i5drey u84(q,*xibz d B. Where is the 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-spr j8y hj5yf3qc)*m3zwq eci.- ging system produces what effect on the system's mechanical energyqz8 e.3fm)ci* g-jcy 3wjyhq5?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mabk3 4bw*d ujv+ss of a vibrating mass-and-spring system produces what effect on the system'*bbv+d jwku34 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 constant of a vibrating mass-and-spring system pro6n((3:kmzlp xkn-c 2hds hzd4 z6 v8kjduces what effect on the system's mecha z6x63ldsd284ck:h-kj k p ( z(nhznmvnical 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 l z61(x-no c :uk 57wdn4zidb.zn- gguEarth and on the Moon. Where is the period-g o ucdn7u(4n5k lb:.1d zzzn-xgw6i the greatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k8fj9nzc7m 9ao of a mass-and-spring system causes what kind of change j7nafmo8zc9 9in the 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 g n:tggh *1x85ct x7mein the resonant frequency of the system? (Assumg51: xn x m8ttgche*7ge 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 syxb6v 6akwjli,v7z0 )tstem causes what kind of change in the resonant frequency of the system? (Aswvzk b)0v,6ji 7atxl6sume 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 massel5+ev frf22r*cc2 ieq41iw i M attached to a weightless string of length L. For this system, when undergoing small oscillationsf vlri2re e2we4qc2fi*5c1i +

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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 fo s-spgi3,z f 7jshf7jmi6mp6( r one complete vibratioisjpgm7if mfh6j6 z37 -ps(s, n

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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 lonpa0qo0 iur 3q3g. The period of A is T. Pendulum A is twice as heavy as pendulum B. What i30 arpqq30o uis 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 pends , u6unshp3gmo .c2-4gk9 xjjulum is tripled, the time for one complete vibration incugs23, n6u9m-j4sx o pchg.jkreases 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 bcrngr6 w3 2/hgoth its length and mass are increased 2 wgcnr6r3h/g?

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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 f.swi5xya7 qr2/1z rmgmea2v/ requency of simple pendulu7./2 aa wx 2r /sge5zmrqi1mvym B. Which statement is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the accecdmfx 4-s 3 kxvv(7o7cb+ean+leration of gravity is less tha n-xv7( maxccfk3e vd+7o+bs4n on Earth, the resonant 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 represe. vdlb/kp+tk9 nts


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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 represen6gz vy svtf9 9y*-awv4mv8 nra8ku e36ts


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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 h)d-wws,4pf kf- j 1merepresents


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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 found to depen d* -ezwm2ga(o+ 7akrjd 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 3 31ld wg:a3spd:mla rpoints of the wave from equilibrium is cal a3 g3pald s1mwrl:d3:led 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 succektr0n .hbero+b- i6 5gssive 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 ti5 r q y 6h(.)gp4cfhm)w,big kcrzv5:mme is called the wave'czqm 5 hh(rb6,:i )c ry4 .vw5gpgkmf)s

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequency times the wavelength is the wave5:ekk ,mwki5pwj d:)r 's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave increases. What 2ixs,o,ytkk+ happens to the distance between successive crests if the speed remains constant? k,2+ kyositx,

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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 wi;mz )1e374-)c ( izevfx -kywevcmc8 gy jhej8th wavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of the sck3c; vceege8 h-f) x81zzw)e7m - yj(4 mviyjecond 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 o pn2iv9m9+iupn a string of length L, mass M, and tension T. A standing wave is set up. Which of the following is +v n2 piump99itrue?

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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 ywqhw:tg7 axku* 9i((a wave in the string is v. What will be the speed of a :7hiw (( q9twxugy*kawave 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 wav0axe kqq agi4imq+ph0v/..h 5e in the string is v. What will be the speed of a h40 aikvq5qa 0 ..p/e+h gximqwave 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 T. The speed of a wave in /lqrwzon gqs03 t/ *3bthe string is v. What will be the speed of a wave in the string if the tension is increas* w3otnqblg/ r0s/q3zed 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 spm:d- .jn)4mm2,bsbr kdss 0a transverse wave. As an S wave travels through the Es2-m rnmms04jb s.dp)ks,:bd arth, the relative motion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is ) z wxbwe6p*+e2j7vuoa longitudinal wave. As a P wave travels through the wxo*u+e w)p7vze 2 6jbEarth, the relative 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 th/:i0/wmv3 :h d0cd* .toxavha (mxris

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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 alq:na l espk28)ong a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflslken )8apq2: ected 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, lw3+vc 7 ;0 on-7ego;ihlslpm one is traveling toward the right and the other toward the left. At the point tha;mcphgvl07e3- ;+olso l 7nw it 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 od v+otir-m 0.prn-+ 6 tktnd4on 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 negative direction. At the point that they occupy the pod iotn6trvrt.md -+kn 4+0-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, occurs when y(,izs 7ayd*p

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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 fundamentalot atf43ez( e 1kveam;/ay8 ; uc+ezl0 frequency of that strine; 3+y8cat1l (az4z u;a et k0ofe/vmeg 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 of a spring that stret*b7k.- m+zcnsy 0g xsiches 2.00 cm when a mass of 0.600 kg is im+ -z*csnybk0s.x7 gsuspended 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 sp:ze y5 ng mrg4y /im4d)uz+fn7 q-p+qpring 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 lqpqn ) gyd/++ymfz:me p -754gnriuz4et 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 cony4os z g1agc4,wi;8hur aq(c,stant 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 toi,g8,o w414s g z qyca;aucrh( 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 60 N/m along a horizontal, friw auvmp45tp 1,ctionlewpva41m ,pt5 uss 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 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 oscillation os3 d5d5l/jr.tzk ck66om(nss in 5.0 s. What is 6c.n(k3 6ldo /rstkzodm5 s5jthe 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 sprin3mc9vl z5u0 fcg of spring constant 20 N/m with an amplitude5 fm09czucv3l of 0.30 m. What is the 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 attached 1p lkm 0omfi /5as.l*7o o/6 z8rdfbvzto a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speelm b/1o*5/ zao.p il0 sffodvrz86mk7d 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 timndzuag, u,a,aw5j )vtl92qz8vq/,y e e. The mass is cut in half, and the system in, u9avaqw zdyuv q8,/l,2egz 5a ),jts 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 a spring of sprino,qs)d o;th(qpk 0j/xg constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1d0tx; /qhj )qoo(s kp,.5 m/s at the equilibrium position. What is the amplitude of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/my,9 7n:fd6 nmzuovs;c 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. Atczu6ms 7;nf9on :yv,d 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- f9nptcpopga4p 2 r*) end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion wp* t-p4)pc2po9 rganfith an amplitude 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 horrc9 qh*i a19sbizontal spring of spring constant 50 N/m and set into simple harmonic motion with1q*icabs9hr 9 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 free end of an idem2rf6kgqwp7jd0o 8 n;al spring of spring constant 20.0 N/m with an amplitude of 0.250 6; dk7nfw pjqro208 mgm. 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 cwu+xy te7ldb 1m :r( 1vr,kok;m from its equilibrium position and released. A frequency of 4.0 Hz is observed. What ;kw( + 1otdlr1 v k7xebm,:uyrfrequency 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 sppc((ngj;ylej gyht:yph)rpt 2g096n:. dfa )ring constant 10 N/m. The object i 9y(h c .ntpayr) :h2p gdp;jgtyjgl60:fen( )s displaced 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 cof)diq -bv+.m6 msgi v4r78nzpnstant 10 N/m. The object i.fq d7r i6v4 8+i -)mzpnsbmgvs displaced by
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is hung from a spring of spring constant 18 Ntu5h-m;gz9 h u/m, displaced slightly from its equilibrium position, and released. What is the frequency of its vibration?- u;gt9zhh5mu

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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 oscillw4-g u+nq i -bzl+i;st.ta)z dates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the mass?z+qts glw+nd. 4za-)i u b;-ti

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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 x6,h0grvdf pk9m l6g i-:t (lito 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 o6k( mg lxfpdgr6i vhti,0:9-l f 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 stretches the zxd( jgwk8-ebx-,gt -s55vn rspring 2.0 cm downward. The mass is ts-5erx- x (d, kgbn8jvwtz -g5hen 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 eya:t0cv0m y :qgc*w- squilibrium the mass stretches the spring 2.0 cm downward. Thevc0*0g-q:tyay m:sw c mass 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 on a spring. In equilibriulv5dc2xq 8is/ d l5tc)/lkj4g m the mass stretches the sprin s) cvildkx/52g4jt/dql5lc8g 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 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 m).ebl hoarx:0 (2w bxrc,h.cpotion obeys the following position versus time equation2 rc bo(rbxc,x. w.ha0)p h:el:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmd4 c dr95+xrcel9;u s.isnyj8 onic motion obeys the following position versus time equatioy 8dj ex9; c .5ds4s9+iurcrnln:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 the following position versus time equjlkiv(xn 8s;; atiovj;; xknls( i8n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 simp0 +s;vq;hjk0 qxtm ao9le harmonic motion according to the equation q 0+ vqtx9;k;mshoa0j$y = 0.50 \; \sin (18\pi \times t)$ 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 oscilvufsm jr1g(mg,/il f. yfv ++.lates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the sprfjmf1.sygfu. li+v gv,( mr+ /ing 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 d28w)a+;lgl o jjhma7db7/ng are its frequency and period on Eanjo7 lmbh;w2 dlg ) j8daag/+7rth?

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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. +v+uhy )ntaxrou ; 0:rWhat 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 per1s yrnj5gh)k2( ;fiqliod of 2.0 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 is 1.0 m lqm9uek3 zp-9(,n9ysp6z qg n.ctfj / iong. What is its period on the Earp 6 ztupfgm9jy.z9 sni-qc,3n/ek 9 (qth?

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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 grandf(j9/lec) hun u1em2. jtb5e, e)pxlojather clock is 1.0 m long. What is its period on the Moon where the acceleration due to gravity is ouee)2p)mt n ec(j .ej1hxbljlu/ o 95,nly $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists4nogv bmq /*x9 of a 0.25-kg spherical mass attached to a massless string. When the mass is displaceo9 4b gvqx*/nmd 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 mass has initial angular displacement on1 v8 5inuplh5m5iitmq 7 jv2*f 8.0e. I hp5ujml512qtv5i* 8i7 nmvnit 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 giveq8/i t xeb/wb+n time. The frequency of the wave is 120 Hz. What is thibte/ qwx8+ /be 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 g eq.44wti orkz3)p3ra wave at a given time. The frequency of the wave is 120 Hz. What is the wavzip34 gk )4 3.retowqrelength?


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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 l/vv:y 6ewqf2vv5pe 7wave at a given time. The frequency of the wave is 120 Hz. What iy6wv5fe eq7: vvlv2 /ps 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 at/7fmui/ + fa/,jnsmn wave 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 opw ze* :l2y qieal+fygkl1 j0 /6nl7,of 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 hr ;xjeb a:l,4frequency of 12 Hz and a wavelength of 3.0 rhex: ;a 4lj,bm?

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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 ofkbf/f7e+u.wh nr7jz5q 8sx(oem.0w f a wave that has a wavelength of 3.0 m and a frequency of 1wneqfzs7e5.f8j0. uh r 7o(x+w/bm k f2 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 travelihfj;9r a3kwlqgi6k2.z 8l1 vrng 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+b6*ahe9 n xlz8*)k*o cg lowy density 0.0050 kg/m is under a tension of 1350 N. What is the waw8k **x* lh9 eazonl6o+)gbcyve 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 +l(:emg vxxj 2k jjz-)tension of 180 N. What is the velocity of propagation of transverse wavm2l xkj e)+j:jx -zg(ves 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 5009h kqchyl9/-gu xn0u2 em 6jx, m long wire whose totalux l h-/g09h6,jecmqyn29 xku 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 propagation of a transver;gx /iepwrh9 t2 oi2c(/3ujdgse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of thih3poj gi t ge2/dwucrx2( /9;e 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 fundamenxi:i h-p+eyp+ tal frequency of 500 Hz, which one of the following frequencie++e- p:xih ipys can set the string into resonant vibration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string is observed to h*lpx.w6b o v,u sm0ua,ave four equal segments in a standing wave driven at a frequency of vu xpul,mws .o b*6,0a480 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 both ends, vibratnfp; g6j3fn.x4 ew8h;ohzl s ,es at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if 3sw.pngoz l n8h;f hej,f;64x 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 should its e05zb4rd o( yym5;dz5 u+rg dcw.rjd6 length be if its fundamental mdgd 4b;56eyj 5 wyo5(rdz.d+ zcru0rresonance 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 ha pfxey8vuvb6ck:mo)4 r6,v8 irmonics of a string of linear mass density 2.00 g/m and length 0.600 m when it is ,vkcixm8:f b vroyep4v 866u) 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 miv(h -fcua0* 5brwg m5 is fixed at both ends. When the string vibrates at a frequenc*hub50rg if -m (awc5vy of 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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