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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 oft/ydcx.ar/:2pr2v vn a periodic 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 zy:/ ,ubigx gp7i3n;m cycles per 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 equilibrium poin4r*2hzghcmep9 0 f6fy t is callecfz29pe4 0hr f6mh* gyd the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at its maximum displacement g(v(xppqd0 f,+5khg qfrom equilibrium, its instant0p (k+qpg hv,x(f 5gqdaneous 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 through the equilibrien;+: l72yyr e1bn*vg,qk2jc4s kmj hum posy+4,k vjgnn qc l1e72;:my2b* ksjh reition, 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 ; r6ns2sh7 8rqd5ari mat maximum displacement from equilibrium, its q rs2dhrn8 i sr56a;m7instantaneous 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 nlcq/+ 6m (g*ymg 5lpma vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energ/mgcl(5*y+ mqpl m 6ngy 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 sprhu9muag u)9d3g3)th t ing and bobs up and down between points A and B. Where is the mass located when its kineti g9d)u9u h3u3)a ttmhgc 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 ;l 1x9g:bhdrfvertical spring and bobs up and down between points A and B. Where is the mass located when its potenfl;r:1dxb 9g htial 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 sv99zgt zc;f; 0x- r/icehn3z and down between points A and B. Where is the mass located when its potential ene3sx zh0 9z;ivc9rc/;-e f ntzgrgy 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 system produces whata;exhv)7h 3b xv*b9vr effect on the system's mechanical energyv; veh 3)ba x9*hrxv7b?

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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 o: t;uqs1 zxb,jf a vibrating mass-and-spring system produces what effect on the system's mechanical energ1sujxbzt ,q ;:y?

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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 produces( ju9ec 05 qgwy4b8rzz what 9 w5y8buezjcg(rzq 40 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 spring, both on Earth and on the Moon. ,(5gzx x4uib3nsfns3; d))iu c-p kqcWhere is thx3(g,s)pi3;f uu k-5csq4 xdb n)incz e period 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 co pro+ue1( ),hwgh t445tzjc6tt ui,sk nstant k of a mass-and-spring system causes what kind of cha,jh+so4 t1tiruk(tzw,p 65c) 4 ghtuenge in 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 systsxkk (lvv-*a9f(icg y9:/fqqem causes what kind of change in the resonant frequency of the system? (Assu v(ay*(cgfvf /kk q -:l9x9iqsme 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 9f-(1u7u6 lf0abwi(eh1h6 : cr cduske 3rldmof a mass-and-spring system causes what kind of change in the resonant frequency of the sysukdirse7r116l bhm uu9:eh c0d(faf 6-3(l wctem? (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 weightless string of lengthhn mhh2r-: ;ve L. For2:h hhm e;-vnr 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 isa: ;ulce gkh.omh.1zzs( 7zu s6.:nrb tripled, the time required for one complete vihl.c6:;u(zgs ubzso.h:e n.a 7 mr1zkbration

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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 +efc: lmz 3jn13.0 m long. The period of A is T. Pendulum A is twice as heavy as pn mjfecz3+1 l:endulum 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 complete v /zf2lw a l:u mo-wm2k-0kzf,libration increases by a factor o :mza -kml,-z0lwk 2f/fuw2lof

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What happens to a simple pendulum's frequency if both its length and mass ex,7q ahkb+ 4*wgq+zpxt 8,ygare increakxbt8 +gq7 exwzy+gqpa4, * h,sed?

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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 , qlw gpf+x7h*forth at twice the frequency of simple pendulum B. Which statem7pfqhw*,+g xlent 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 aceyex oi11 pwxv(8dwqq z3 50a4f2px;fceleration of gravity is less than on Earth, the resonant frequenvq3xxz w x5a1piy(;ef 0fqwpe14 8do2cy 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 represeaam1s n pth*29ot)hq :o3+jih 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 representci:gn/ u,f 52dr g,ynco+pe;g s


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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 repreefsewutt, 7is 4o63f 1sents


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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 k*wyr z8tlw3 h3jo9z(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 displacement of points of the wave from equilibrium )m vi kjdwatzppn,p;j py-;j ./ 8-+spwi65pp is called the wa ;j ;.iv8 wj jp -)pp,6ndtipyp5+sw/kmzap -pve'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 cr0wfm8 y2 :xuuqests 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 pev, o ui+ra2o.ar unit time is called the wave'suoao ,a .+2rvi

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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 tapts/qc1 fj.d:aj 6 f2he 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 increases. What happens to the :jo3mf/vmil)fx)dd8l1 b r+idistance between successive crests if the speed remains constanv mjidmi)/o8llf:3df+ x)r1 bt?

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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 frequencygf8hi9 wy.0bjj ktf l a8/dcql.*-oa * f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency ofha-it0dg**w.j 9/bfykj.q8 ll coaf 8 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 te9q 8fo 5w yfc.kru.u4hnsion T. A standing wave is set up. Which qywo.r9ukf5f .h 84cuof 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 lengthgq5q)i*hp ux9 L is under tension T. The speed of a wave in the string is v. What will be the speed of a wa5*ui qpxghq9)ve 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 lengt8l(tp q3zoeo9 wq8 yta07b ca)41 cnlih 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 length ie8tcn(lc1 9bzlyp0743 q8) waqo t oais 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 tef b4lb/woag/9nsion T. The speed of a wave in the string is v. What will be the speed of a wave in4b /fl9oagb/ w 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 wav nh6oy/mgm:y 2e. As an S wave travels through the Earth, the relative m2m /moy h:gn6yotion 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 iz/) rcrb:n6hts a longitudinal wave. As a P wave travels through the Earth )rrtn:hcbz6 /, 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 isc, ).1.jc twchkxui6nn9gv 5s

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave pulse traveling to the right along a thin cord reaches a discp/ 8n eiymeav ,.)zfsy pk-b31ontinuity where the rope becomes thicker and heavie1a.nbp3i -zfyp/s mk) ey 8e,vr. What is the orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positive amplitudes pass each other on a string, one hf.:uju0:vs lm7dzps;2-j wiis traveling toward the right and the other toward the left. At the point that they occupy the same region of space at the shs::iujv d- uj. z2psf;w70lmame 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. Tbfgzn0 a+5p vhd473gy* 2qge ;xzxbv 7he 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 same region of space g*v4pg zd2a3x70zegvfyn+ 5bq7xbh; 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 stringwe5x w c7al13j fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundamental frequency of(xqb 9( s*torbze/dr8*r p p(d 8:rjhr that string dspj8(* bq8 (r zre r/ob(*rhrtdxp:9 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 stretches 2.00 lybe-pdr; /7jcm when a mass of 0.600 lrepb/ 7 y-;jdkg 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 of spring constant 60 N/m alf y *v,pcf pt//6;diptfx(c2+hwf6ktong a horizontal, frictionless surface. The spring is ini/,f+ti6*vyfpt;2 f/c(fp c tx h6kwpd tially 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 2;wknx4 cnkk qsf0xp4xlz 9;;*qra,w N/m along a horizontal, frictionless surface. The sprinzn;s*x 9pr2 ;ka 4cfq x04,xw;wlkqnkg 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 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 horizonthd 516 u kgmbgdfk7shq-vqg3 6d5./fral, 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 itsk5 m- u qbh5skv6 f3d.gf1dgqgd r6h7/ 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 undergoek8zhda2ob- 7l s SHM. It goes through 10 complete oscillations in 5.dzkho b 27-la80 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* ohqustr45i*-q uwq0 of an ideal spring of spring constant 20 N/m with an amplitude of 0.3i*u q*54ot 0qhqw -urs0 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 to a sprin(o 5gml m(u +z1ui7gtsg of spring constant 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 equilibrims+lmzug15i( u7t o(g um 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 ck6ajx-4ug mhzg 1j, b(m. The energy is 8.0 J at this time. The mass is cut in half, and the systehxj (k4 u, mag1-zgj6bm is 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 spring constant 20 N/ af8g 2dzz5ro/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilfz/oa z852grd ibrium 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 atta6*lezcbs9 3 vached to a spring of spring constant 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. At what location are the kinetic energy and the potential energy the same?6a*ezvbl39c s

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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 horizf7,x,o8za+w zc t q:otmv.q( uontal spring of spring constant 50 N/m and set into simple harmonicaoz xc:.8ou +z ,t7mw(,qvqft motion with 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 horw7q/zzpb,px+jgb)yz 1 iqgp7ao3f c,m g)5,cizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.13)pa,5pxy q7fz1gb qp/ zm)gjzgoc,ic+7w ,b0 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 ideac+ s;gg2gi v l5:z5cnk j -yapl06fk.al spring of spring constant 20.0 N/m with an amplitude of 0.2kz ncgs.y5pi lg 6;alj+5g-k 0v2cfa:50 m. 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 cm from its equilse 1 jdjf 2aut-6d77tlibrium position and released. A frequency of 4.0 Hz is observed6jd tu7l 1-tej27fasd. 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 springf3l02 0qzcmyz, 8)bhks do:sup, im3u of spring constant 10 N/m. The object is disp3s :,zh0u3m8k qod ml bifsz)pc0yu,2laced 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 o, fvocj v58iwnsd,5a ;tdie:, f spring constant 10 N/m. The object is displaced by,, i,:snjt;oi5v5 wa8dved 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 sprin,q /e9ojuv3qirw- +8 uecbq 0dg of spring constant 18 N/m, displaced slightly from its equilibrium position, and released. What,0 /wreiu-b9vqqdu83 coej+ q 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. Ipw;qa;,ja7rp;b;s mciur/ y 1t oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium a/suq 1rimpj,pw;y; baa; ;r c7nd 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 springs. Mass A vibrat ddp., 8g7dx7e wi -gfmmch80nes with amplitude of 8.0 cm at a frequency wdix- g0hpm,m8f8 .7e7dg ndcof 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 the mass stretches ,xe:/iid6ou yifc7: nthe spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculate the period of oscillation.coii fy6niud,:x :/7e

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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 6fc wrq;u2z idv:n- qjr4wi.:g cc 5z(spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released fc v :4 ij .-un:wg2dq rcwf56(c;zrizqrom 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 t4x dqrxurhnqns3:j+ l0j,k 1 ,45ce:saqmy q:he mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write do4x3 1 4nk,qlh:5, q:rsqxqumaj:+rcs n y0ej dwn 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 posit0a 3 z1fdrl5gswuyx6/ion versus time equat1z 3d r6sfwl/g5xyau 0ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 following posi71sa u5.ggg2lldg 8wztion versus time equatiod5ggg w2u.8s 17alg lzn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ( .qo8kcdebu,kr rol xd 50+g s1e;po7f.fq4ifollowing position versus time equation do1d.+;feg8k ix0cp5.ooqeb ,q7 sf lru4rk(:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 enmmio6. n2im,ud of a spring executes simple harmonic motion according to the equati 2n.moum mi,6ion $y = 0.50 \; \sin (18\pi \times t)$ 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*o.5ceu+f v 4qoy- bwc1pilx).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 stretche41cxb+)pof*lv.e c u yo-wi5q d 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 are itsi ix--1l nfo0w frequency and periox-1 fonwi-0l id 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 2jcfk q27o).yc at7 )u3bk.tfl 8.84 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 sh*qhtc0 n o3,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 grandt, t0hjq.-/lzteww( 0 j epf3dfather clock is 1.0 m long. What is its period on the Earthqdlw0/p tje.3 ze,(fjw h0-t t?

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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 grrmgck)n2tc81 b neo ao,brqq0c;p3.t/j,p7u andfather clock is 1.0 m long. What is its period on the Moon 1cbqetrq /pcg 7u r3n0k) 8,t2p, jamooc;b. nwhere the acceleration due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.2a 9av..rfsbs80 5 fddk5-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and r.a. a f8kdbds 9sf5r0veleased, 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 dimd j2zuh*7)ygsplacement of 8.0e. It oscillates with a hg2*u)y j zdm7period 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 thaf f85eea:g ,re wave is 120 Hz. What is the amplia fe:,r58fae gtude?


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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 timqc;bzm-ujeg wa w),lk o4/3,f e. The frequency of the wave is 120 Hz.4 aqwzcfojue;,)- m ,lb /kwg3 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 aothtltvz1 l8 c6us296t-3 jc wt a given time. The frequency of the wave is 120 Hz. What is the wave spewuols26t13cj 86 zt9tt-chlv ed?


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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-kg7 p4xzi0oor hjf64amk6j ,q0*dvd a 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 of a wave with a frequency of 6xvpff+2qnbw- qm s51 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 fre)xo9j5c eau8 cquency of 12 Hz and a wavelength of 3.0 5acou 9) 8jecxm?

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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 b435 fcc*)spsom yx-h of 3.0 m and a frequency of 12 H y)bs5hm4 pof -xsc3*cz?

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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 traveliglt2 ; j.0bc9iq uyg z+v*bkz/ng 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 0.0050 kg/m is//wq0 4jg2hrc jehw8vc6g2nd under a tension of 1350 N. What is the4j c2ve /c0wwhgn8jr 2dqgh/6 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/yjgh pxzw i5-no51b/)m is under a tension of 180 N. What is the velocity of propagation of transve / )hywbg-1ijo n5xpz5rse waves along the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m is traveling down a 500 m long -e/u0h0 k:pp r e4w+zdtu9+buci ;ethwire whose total mass +ue4b h00wecr+ eukttu;p: /dzp9 h-iis
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 bt,uq1 -zesy:2.0-m long string fixed at both e-be,tz1:uqs ynds 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 fum 8 1b2p:xgn 0dbb0ewendamental frequency of 500 Hz, which one of the following fbxeb epd1m 08 0gwn:b2requencies 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 * gn o2s6 rvr3q;pxmf,observed to have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency xonf;gr*pmv2r q3 s,6 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, vibratuxr2 idvi+98bes at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is ne9xvurb+i28i deded 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/m is under a tension of 20 N. What should i ko3y;v 9uwjz20ryr x-ts length -0yr;k jwro2 uy9zx 3vbe if its fundamental resonance frequency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a st/t l hcd.or*;q n/j2jaring of linear mass density 2.00 g/m and length 0.600 m when it is subjectedq; 2l/h njtca/ jd*.or 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 2clc m,*fzk- 5w.5 m is fixed at both ends. When the string vibrates at a frequency of 85 Hz, c mlc k5f*,wz-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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