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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 period,0 pgb)7dugc ig2rk( wic 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 time is callyr+r k*dnpl6d2p,tm(nna 5x 0ed 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 displac8xo o jeg 1rh+gl5f ,.1qqc8xeement from the equilibrium point is calx.1eoe q+ 8o5,x gf hjrql8gc1led 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 unde6;nth8)a fc/ zb r 5k9uqwe1blrgoes SHM. When the mass is at its maximum displacement from equilibriuukhectnqwbr b 9 );18a/l6 f5zm, 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 th9t6z0xa t c6iljk14gurough the equilibrium position 0a6gu6jtkiz4l91c tx, its 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 i8cg151r 4dja0fuxw qdisplacement from equiliu w401f1jcqrgdxa85 ibrium, 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 between points A afp ba3z y04zoa-4rlqg3bv ; m,.cjo*and B. Where is the mass located when its kinetic energy ia*z,l3m g3jrazb c -40vqy;fooa 4p.bs 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 betwevsz47is r+sx*s 9xzg4en points A and B. Where is the mass locatesr9gs7x z+* v44 isxzsd 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 a avq0 vp/3kioo+p .ty iq2cf++nd bobs up and down between points A and B. Where is the mass located when its poteno+k. iay03p v2q/fivq+o+c tp tial 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 toqvk8*9gxps / q a vertical spring and bobs up and down between points A and / q s8p*g9vqxkB. 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-spring syste*:k: a a nq)iz9xmh)qem produces what effect on m:kq:na i z)e9*qa)hx the system'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 vibratinge: dyh;1xu(+2gbxgzg 1l n/;dhs;ur c 1 oag5y mass-and-spring system produces what effec/ga1oggg;sb le;y:huz1uyxxd 2; nc(h 1r5d +t on the 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 constalxt n 9(48ooolnt of a vibrating mass-and-spring system producesl ( 98nx4oolot what effect on the system'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 of a sprinuc 25smjpa(+dkc x /8ng, both on Earth and on the Moon. Where is the period the greau na(c+ j5/pxsc8mkd2test?

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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 ms,3 )riyfom9t1gunp:v6 chyow 3k e,8ass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's mass m.)3vmfe,39i6pt ,y:ncyg 81u) oowshkr

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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 massp*ty-3k.r6 8:fa xdi owlg m9s-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system'dwtm 6*8ok:lxyi 3pafsg9r-. 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 whai: rsfvw*xk0* t kind of change in the resonant fr*ri:x v0*sf kwequency 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 consislcc*l 9fzya0 /0e5tba /q:t fjts of a mass M attached to a weightless string of length L. Fo zbt fca 9qlj/lcytfa e*/:005r this 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 t 8ucj0:yc/ ,txm)6j spyfnk4vripled, the time required for one complete vib/mjkypt fy6)s80nc j4v, :cux ration

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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 5i bg a.3u g(ikr-d5pnlong. The period of A is T. Pendulum A is twice as heavy agdbinpu35. ( -a5 kigrs pendulum B. What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pendulum is tripled, the time for one complelj3b;vaiqiqw g56 -1 yte vibrationavy ;q ij3q5b1g-lw6 i increases 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 si fat7 n.uy,zfck84w2 n3wn 7rkmple pendulum's frequency if both its length and mass are increasef.cw 4 kun nnw2z kf7a,t3y7r8d?

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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 ano9q12k qmcf,pgv8g 5wnwlwcm x8u/:u16 zn /gd forth at twice the frequency of simple pendulum B. Which statement is comn lw/w8kuzq 1gwf9cg5 68vq g2om n u:,xcp1/rrect?

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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 acceleration of n(tg n),aks rzu 55o)ugravity is le(,u5kn)rn5t)uzgo a sss than 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 representeg7y8bh,it1xmrn. , f s


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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 represeotf +c naz/.0/ 1y5dovwdp0xnnts


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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+.t zkwl)rd1 h0myt3 bs


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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 d:nuz +q0(k orx nj-9qdepend 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 wa-ej th+*n3 vuyve from equilibrium is called the wave'sj nt-v+h yu*3e

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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 cv)0th f (o9 fr7;p/pf.rfxscvrests 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 ofy/ lsa9k- aj+gsgma( / a wave passing a point per unit time is called the wave'ms-(alk+9g s ayj/g/ as

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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 ther ).y3: pmiq)v2jzgs a 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 increcdl+)m-b2gxb2 0 g4kndflj *et/4 ordases. What happens to the distance between successive crests if the ged*m) /dl 4-okjtb2+4gxnf0brd2 c lspeed 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 g4iicpws 2r a+8s*ef:lvkskjt94 7c* wavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the sa72:p r*8lk9c*4ks svw4+ce ga jiitsfme 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 tension T. A statco j0mj9o:s +nding wave is set up. Which s:9to mo 0+cjjof 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 length L is uy0f+x 2a7pganycb 15f nder tension T. The speed of a wave in the string is v. What will be the spp2g yf+ x5byf7n01a caeed of a wave in the string if the mass of the string is increased to 2m, with no change in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under t+cwo3z 3v 2jhn1 zxtz6ension T. The speed of a wave in the strico3+2nx vjz6z 3 1htwzng is v. What will be the 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 ixhpp 87t*th: c /n7j kqonw94os 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 tension is increased to 2h8n pk t:9cx7hojw7no/ p* 4qtT?

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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 wavefkoo95h+u- gk is a transverse wave. As an S wave travels through the Earth, the relative motion between the S o9+ of5- hgukkwave 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 tx ber2l,3ap(lhrough the Earth, the relative motion betweex(elp, lba23rn 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 l 5(rvq8n ua;fy, m (up82covyis

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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 t:*7er3: krq/ td v)tnh4ly h:mzo64 urjlq1hright along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation ofv)u3rlt7r4q t *rhe:jztnd/6 o q:mh:1y4hl k 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 equal positive ampl 1./eafxs :rbb-vmiv dzxm--(itudes pass each other on a string, one i:--m.-bf1(v dsxba exzvr/mis traveling toward the right and the other toward 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 9omwtn+ 7. f :w5tlpvju9wdt , rt,j7eon a string. The one traveling toward the right has a positive amplitude, whil7ft 7w.o,nl9r 5wtudpe w,+: j9mtvt je the one traveling toward the left has an equal amplitude 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 w3mhlgv2p(- sxdm* j5 hyrx4 j9 7-rsoat 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 funda 3vh8wg 3v ,sy5i3hftcmental frequency of that string will increasw5g 8ihv3,c 3y3 hfvste 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 whe ,5hordi w85cbn a mass of 0.600 kg is susbh5wor ic, 8d5pended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 9 y9ox p lxr(b8e,rhqf)9.xzp60 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 position when it is ob 999fh,xlxx8rpze ()oqyrp . scillating. 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 spring0ppe5+k(g8e* z; dc mgu8vmbp of 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 go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the period of osvkdm+5*8cep 8p ;g upge( m0zbcillation?

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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 horizon*.jopq) 6q d eb:9otuftal, 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 position when it is oscillau.9jpo)6 q:dq*t fbeo ting. 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 compim l)*ujrj6sx-,xik +lete oscillations in 5.0 six6jm*jx,lk+riu 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 end of an iju y9tqc 92vzcwk-f. 0uid,)oli7 a;xdeal spring of spring constant 20 N/m with an amplitude of 0.30 m. What io9c2yi j;tcif, -)qu wu7.0akzxv9dls 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 to a spring of spring constaqras4a hso-;d*0s cy *pc1jt9nt 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motis;*1-p*9 jocr04ysachsad t q on 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 ind a12x- 5tkkgs 8.0 J at this time. The mass is cut in half, and the system is againkt521dk -g nax 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 spring constant 20 N/m along a hor v7.)9k1( emqq. p etlokrzpy0izontal, frictionless surface. The object oscillatyqe.l(0oev)q7m1p 9k.kt zrpes in simple harmonic motion and has a speed of 1.5 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 qfv 49exeh b9tl.mb3h06dtk 6of spring constant 20 N/m along a horizontal,e9vdq th6e lb0b6x.th934mf k 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 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 end of a horizontal sprin t/oljpgv2rr-gdl 3q; ;wgcvi5m5 ;+sg of spring constant 50 N/m and set into simple harmonic motion with an ; jmo5v drcv+ll/ w25p;rgtiq- ;gg s3amplitude 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 attacheu x;d9lmbu 35dd to the end of a horizontal spring of spring constant 50 N/m and m5dux9u3 ldb ;set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of ad0awg8crt waq )li; 5(n ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetiwtrg)w( da5ac0 liq; 8c 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 from its equilibrm4gs3 t/dx;dgv3ag3vium position and released. A frequency of 4.0 Hz is observed. What frequency would be observmggdv3ax3 ;4s/vdt 3g ed 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 10 N/m. Thett - e 8fp;csb:pw8/3q0h,mkn e on9rt object is dispb0srmwp3tnen fp8 :9th,c/ke 8 o-qt;laced 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 oo2yv0 7,h klcz(xq/bconstant 10 N/m. The object is di(oxo bq/k2y,cvzh l07 splaced 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 constantfn9bevzq+kz)wihma+s 4,p7a7e ; -oq 18 N/m, displaced slightly from its equilibrium position, and released. What is the frequency of its vibration?v4-7qqsei )mzef+za p7a ,+b9 ok n;hw

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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. I)xjrel; w;g.q v99o eut oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium 9 )e;e ;jwqg uv9x.roland 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 different springg/j xe cnikjgguim,4 ub.5-*4s. Mass A vibrates with amplitude of 8.0 cm atnubgj k.j45i-eu gi , /*4xcgm 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 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 (p1 9 aumpd7i-i+l rjcthe 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. Calculate the perioj (pi17+9aprui mc -ldd 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 maa3ii v9ufs/)dss stretches the spring 2.0 cm9 dif/i3svu)a downward. The 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 equilibrium the mass sqqeyh)7fx08 i7vh 1 rctretches the spring 2.0 cm downward. The mass is then pulled an addc 0xh1i7 e)v qhfry8q7itional 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 obeys the following positionf7scj7gd4- t p6n 7uxp versus time equationn 7-7ujfd46 g xsc7tpp:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmocfrz8 2;h93jewr uos/nic motion obeys the following position versus time equation:3/9hwrs e8zrjfuco; 2
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 followingnlf/n fc .x,v/s9g3hmrlx07j position versus time equatg/hfc n,l/njv 7 xlxm frs39.0ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 sp u(zu4g:8h8 eooq7g+qhj0f9jlypi,y ring executes simple harmonic motion according to the equatiouihzlg 8o q:jp9y4f7,(h0+jeuoy g8q 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 oscillates onv8gmsr*, nndb* ll- t7 a horizontal,7v 8gl m -b,trsld*nn* frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete u/ tqlam .n) x6(tw5p mq8q:xdswings in 8.0 s. (a) What are its frequency and period on Eartwu tqmqt p:.)6/n8ld(aq5 xxm h?

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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 r7.;ijh:hm/ wwe s6at m long. What is its period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s on Eaetk0nhq qx et,v04k. hy:6ovc09vqii/b , jk5rth. 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 long. What is its perie08 co7h2vcouyvv37 iz/,xh u od on the Eartevuhvyvc ,i7 oc0/xho2 z 387uh?

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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 perirr5h(xt*o 6c dod on the Moon where the acceleration due to gtr r6x* h(d5coravity 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 spheri88x fm7 hw9fuc*m +tnucal 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. Wwuum8 +8c97fntx h*f mhat 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 cocm7( cz 8ctk0lnsisting of a 20-g mass has initial angular displacement of 8.0e. It oscillates with a period of 3kcmtl7zc08 c(.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 wa9-y afvvb kx):yz0aen0 gr3o;ve is 1vov;)knaz3g e y-r0x: y9f0 ab20 Hz. What is 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 (vcxl8 v kgr+6wave at a given time. The frequency of the wave is 120 Hz. What is (8vl ck+gxvr 6the 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 frequenep(.8e2xv-cp i bv;aycy of the wave is 120 Hz. What ipyxb8c -ie a.2(; vvpes 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 whichy ( ) oots)qp)sqj+ *0w2empqc 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 with4n+ xyv+m tf+z 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 frequency of 12 Hz and a wayb9+y 3v:lkbk7w ;cx yvelength of 3.0+ by3;ckl9xky7vw :by m?

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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 a.o iut/ 8y,r.dverl)mnd a frequency of 12 Hurdmot8..v li/yer,) z?

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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 .atn)r qe5/is obvk1e u3h40d wave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 04pz8+jyte194 ihx 6,ycariev.0050 kg/m is under a tension of 1350 N. What is the wave spv44hi,rejp6yiz 9tecxy1+a 8eed?

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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 ve0bt5g:i-on6 l ylp o3slocity of propagation of transvn0 olylsoi5:3g6bp -t erse 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: pso 9cui.5kwy j83vv m is traveling down a 500 m long wire whose total sip ycwo8vuj.k5 v93 :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 hkwr62ond2s/v9 k(y rmyqspp:f( 9 y(a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequency of this stringkr k9/rss:h( d qpof(96y2w2y(mpny v?

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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 al.zt-xd.ap nc:vz,b 6 )7tei e fundamental frequency of 500 Hz, which one of the follozl: e7.n ptzbc)ti,xv ed-.6 awing frequencies 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 he -oq69ww ,sfxave four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will se-wso,x e9qf w6t 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,)+n*a 5hdgo2bhk **,rfbmt+rmcui5g ,4vpk m vibrates at a frequency of 12 Hz with a standing transverse wave pattern containcrh uh)m f*g4d+g+pk2bmk5*,r*5iv ona,mbting 3 loops. What frequency is needed if the standing wave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear dencf /ze3 vl pdbijgzh82 q):je nw219c2sity 1.5 g/m is under a tension of 20 N. What should its length be if its fundamental resonance frequency is 2nq3:)ze gfhcjl8cw bj9e1i2p v /22 zd20 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string of linear mass deguuxt; 1vl x3) qrls82nsity 2.00 g/m and lu82u3;xvs xl)1rql gt ength 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 fixed at both ends. When2 y+ujwjzd tdb;j00uy*z3 4di the string vibrates at a frequency of 85 Hz, a standing wave t32jjzudw zuy0j*b4 0d id;+ywith 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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