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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 periodic9hr06 a7a oxm46qsfr j 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 uokjh+(9j0 g wof 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 motionc yw wl8lg x+lc,-(ws(, the maximum displacement from the equilibrium point is called -w 8wlx l(c,(sw+yglcthe

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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 SHet t(x fgy1xa3k940w2tn w9qy M. When the mass is at its maximum displacement from equilibrium,ww9x x4af1nt0q2y3g(yk t et9 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 undergoesuffizk+dr bos+ 4 )59q SHM. When the mass passes through the equilibrium position, its instanf +bk9d+54 qrou s)izftaneous 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 underg/ su/*w:tb/-bhvdxuv oes SHM. When the mass is at maximum displacement from equilibrium, its instant b u*:t-wvvusb/hxd //aneous 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 /mm(u tes8ydnsce0 53 a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a munsm0st5(d8 /eeyc3 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 spru)*ca1sz m,,thbk f(zing and bobs up and down between points A and B. Where is the mass located when its kinetic energy i sha,t(cuzm1 )zf*k,bs 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 vegej f8i 3h*et/rtical spring and bobs up and down between points A and B. Where is the mass located when its potent/fgth ejei*8 3ial 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 verticazs 9 pe1r;sive*f.hh7l spring and bobs up and down between points A and fepr.7e ;9vi*hs1h zsB. 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 system produces whayd: ;-h 7wxi2qf felkxz5+2njt effect on the system's mechanical ener w5f7j :q+y;hn zf-k2xid2l xegy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-and-spring system p,oufk r j35io7roduces what effect on the systemfrok35 u,7jo i'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 mas3g*mgig uc5pkz;k7vy 1 m. j8os-and-spring system produces what ef u;m7j3k1vcym5goigp. *z 8k gfect 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 ssl64,rp1 /rr vy5m,9henlv(rxag1xm y 21r iof a spring, both on Earth and on the Moon. Where i(maly xm i1g1/6rrsrers5, yn412x ,9hlvv rps the 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 constant k of a mass-and-. nv: f1:q*a b7xhcfy2dhf9t yspring system causes what kind of change in the resonant frequyxb qn:9 d:*2ftfh vyf.h 71acency 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 in y736jceh8+mo p4vrgothe resonant frequency of toy6p 8cm4oregv+j7 h3he system? (Assume no change in the system's spring constant k.)

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude of a mass-and-spring sys89fe wqtm ld9vv b6a8dv44i,qtem causes what kind of change inm98 6dl4t,ib dvwaq4fv e89qv the resonant frequency of the system? (Assume no other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a mass M attached to a weightless string of lenga6 /hu0:lxuwpth L. For this system, when undergoing small oscillaul6u/h0x:w aptions

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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 skxjy.-mcuaov *6y;8: qy o s+kimple pendulum is tripled, the time required for one completa.kxjo q+-s yy*8vcu mo;6ky:e vibration

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and B are 3.0 m long. The pe*v.n4g q0fvenriod of A is T. Pendulum A is twice as heavy as pendulum B. What is the period of 4*v.qefv ngn0B?

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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 complre.5bzjsa8(s 6ix yuk0z0m ( oete vibrat 5 00s 8marz xsujbyo.6(ek(izion 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 simple pe6 u7 knq4ictmoo :9rg+e :3acandulum's frequency if both its length and mass are incr3r7cai46ua tno 9::qe m +cgokeased?

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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 frequency of h;bjuyv xwz h8ou3u3vn(x ( 6*simple pendulum B. Which statevz8 huu33(xvhno;xj wuy6 ( b*ment 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 acd6vgjr58; tdw celeration of gravity is less than on g5 trwd d6;vj8Earth, 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 .cilm t (y.6d sy,i*xkrepresents


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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 re 9d0fwytbqcq9 -l 9z5bpresents


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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 represents5+0ld: 4) aflqjyqm ab


本题所包含的其它图片:

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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 amplitutpbh cl ( l3kauoyi*.v)*3sg(de 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 equilibj)3 4s8ezlnc grium is called the wavj)s z lg4ne3c8e'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 cres efz1mp n9jtk:4smejj*kj bm/*t2,0qts 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 the y9r+ f*lc3xl:6kvxz)g.ij w twave's9fllykv .jx*x63+gzctwi) r:

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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 wavelengthwqhz81;7mwkyrt0 r +f 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 incg:svsw6 fr hl q9y,d.*reases. What happens to the distance between successive crests if the speed remy 6.wsr ldfs9*:,h qvgains constant?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a string with wavelength l and frequency f. A rtka-8s9 -mm2+5 wdhws.gkp6un )b dcsecond wave on the same string has wavelength 2l and tr8pr.- usdchk -db)s52ag w69nkw +m mtavels 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,yj0k zigc2 92mfy sz:3p;ub:fm6 m4sf and tension T. A standibs; yy f 2zj2m9ps3uf cz:mgm0 :i6f4kng wave is set up. Which of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m andl*b0byzl ),ooor p2n+ lu4 /qo length L is under tension T. The speed of a wave in the str4yo,obo0ollzq2 unl / p) br*+ing is v. What will be the speed 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 tensioki.1rh ahm or xl f,/sybc9,ue)o9e)1 n T. The speed of a wave in the string is v. What wh irm)r1.a/9)l,f1bhk uo 9sexeyoc, ill 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 len+:q 9bkf hwblzs 2gsub,y587wgth L is under tension T. The speed of a wave in the string is v. What will be the speed of a wave in tb:u 2b7 fz, 85k+h9sgwbwyqslhe 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 wave travels througt.t+xcg;bg4jjt(0h ed 5ad ;ah the Earth, the rel+tt(gjdt 54e0. aa;xg;dbjh c ative 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 a longitudinal wave. As a0l hmd71 r7k4ofru;ych,jn oxrm 5h): P wave travels through the Earth, the relative motion between mh) yhr:,1j0 xn7ro 5f4om lrudc ;kh7the 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 wavezbfzy7lh7( /z is

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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 th rp gd+l68o9o99rfdhcin cord reaches a discontinuity where the rope becomes thicker and heaviegc9 d+drh9fo l8 o9rp6r. 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 ph 28w hf/zixf-ositive amplitudes pass each other on a string, one is traveling to2 8zhwhx/ f-fiward 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 cmo8r dnx*5qsp6/ wplbix)( ;o3idm0 on 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 negatr/d ;p3wbd5 xi8m il0 m*()pxcs6nqooive 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 hm(6vtr.cjis7r8psn 3 1ev5 uas a string 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 inrb85woraock-9m .fkl8 ;m-w - , bpwn(u wlyb) a violin string, the fundamental frequency of that string will-c bp(l; mbnrk-ou)-b8 8,lwr w9 aywom .wfk5 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 constantu0et f:hy)u9j7dt* b0(fpr kc of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended7e*ft0()hu9 ur0 tbk dcjy:f p 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/ dsiv4/vrk-6l m along a horizontal, frictionless surface. The spring is initially stretched by a fol-i6v /4krvs drce 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 constcy s1t1z y )2bmi2ac/-jnw+a pant 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 osc-/asb ympai1 c12 yt2)nj+wzc illation?

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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*nuzrwf sn7+j/ls :sr*amf l m-0ft/8/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 0.5f7st fw0-lj+mr*8m *lar fsu:sz/ n/n0 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 goei5 fjyvd30he 5 p;xc2zs through 10 complete oscillations in 5ei5 yz;0pv fdh5xc3j 2.0 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 ideal spring of spring codva .7/aqbtz ,j;hi4 eufm;t- nstant 74- uh ;,qjvtbf/;e tz.imaad20 N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium 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 consta hufd :d9jnu/s/v7v mu0u7x6t nt 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/v9vd6 0 dj/fu mus nxh7u7/u:ts 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. ms ejw:q ve 83a)zra/+ The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What is the energy of the system srq3a/a + )jzev:e8mwnow?

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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 sprints)p; 11qg2 q f ck:4yk0 u)07myuaxzqohaz6gg of spring constant 20 N/m along a horizontal, frictionless sqo 0qafyag4x huq;)k)zt :s z72 p6yuk 1g1cm0urface. 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 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 constan lbp.5r ho-j /, 8l+v5fxasjzot 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 hzx5ba,r 8losv-po l/+f5j j. 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 spring of spring constant ,vi xs1es0bj:50 N/m and set into simple harmonic m e0sx1bj,: isvotion 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 end2w* - s7,nt-jb tfom-0feiaay 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 ebesf2afin*mt o-w0--a, 7ytjnergy 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 ,6rii4isjpi/ an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. Wpsi i r6/4ii,jhat 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 1gm 3c1:l2hjdm vax)a .0 cm from its equilibrium position and released. A frequency of 4.0 Hz is observ l)dm.c mg:v3x2 a1jhaed. 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 1rli3o 4.edkb1 0 N/m. The object is displaced kd 1lob34 .ireby
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 spria: vsr 4(r;46 8ogg cds;qifxvaj -pq;j(xg *xng of spring constant 10 N/m. The object is displaced by4p vf;vdrgj a6ga:qjs(s8x *g-icx;;xq4(ro
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 N/m, displace4wfgold4q0(mom: nb 7d slightly from its equilibrium position, and re4d0nolow qmf bm4:(7gleased. What is the frequency of its vibration?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It oscillates at a frequency of 1.27 Hz yfb wi30mr-ehmh;sid,7)jhaf11 rj 3 when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attaine y f3 rbhd1j7,wma;-ih 3rme1fsijh )0d 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 vi)2li 0ru3xt gd4i 4eysbrates with amplitude of 8.0 cm at a frequency of 10 Hz and u 4istrl2y gei34d )0xmass 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 equilfxf) je .0rf-wibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an xr0f-f) j. wefadditional 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 scl6xi/g8qi:t textj (vc8;f* pring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is(;/8gflc 6tt8ictq e x xj*:iv 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 zz9ay7j fo)5 xqu.jv2aj2od; equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance z2 j.72dovqzxfjy j5auo)a ;9of 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 position versus odbz+uq y zl6tlj3f. -(gge58time equatzzg5d- l jlgq 6u8+b3y.o fe(tion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obeys8iagaet6z:0il6 hx p72 ozc;o the following position versus time equat7i aa:ex062l zoh ozg6t8i;cpion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 fo.kt92h:,vx8g s.ehdksu ua * *w eoml+llowing position versus time equatiew le.d,o:tguvh. u+sm ah*x *9kks 28on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 env8 ()q-rqzv;qf +sbcmd of a spring executes simple harmonic motion according to the equation ;) s-q(zfbqvqcr+mv 8$y = 0.50 \; \sin (18\pi \times t)$ 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 s hrexosz0;1 7(tfvj6 on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the spring is stretchedhots(jrf17 x vsze0 6; 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 s6p/ s vk0e (put)px6(s uqca2x. (a) What are its frequency and perio /v2()a6stqexu(xp0ppc sk6u d 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 *fc:pmz dg8g/j6m vh. 28.84 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 of 2.0 s on Earth. What is its p/-jl/c;u scu j*gwe;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 grandq: f/ jisom4-c+yine7father clock is 1.0 m long. What is its period on the Ea7sy foije/ +mc:-qi4nrth?

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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 1jtq-jnjz8t34wc g94v.0 m long. What is its period on the Moon where the acceleration due to gravity ijz-w83gqj4t j9nctv4s 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 0aepkp 471.zq) yfahw1j;z65m)u a xd k.25-kg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position andkje ykw1ha7uzp.d afpz465aq x m);1) 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 ol(s r(2m a0aez6l wn9nf a 20-g mass has initial angular displacement of 8.0e. It oscillates with a p e((aa6 l9 nswn02rzmleriod 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 givew5 l6x;y+i tc gca24jzk- i/tfn time. The frequency of the wave is 120 Hz. What is the c/kzt65 iyw t2x;ia fl 4-+jcgamplitude?


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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 give,vrqt ekz 18tirx 6w)mj ,bs4)n time. The frequency of the wave is 120 Hz. What is the wavel8r,t tz)v6s,x wjbrm 1kie4)q ength?


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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 fs;zlwuuw3)6 wave at a given time. The frequency of the wave is 120 Hz. What is the wave s) uzs6fw3ulw ;peed?


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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 69.x jeaqrwz8k g) .id1.00 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 frequencyqakut l3e7/p upnqu d3(*wm:td x +-+b 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 wan:zw34fb ,ujd( pd 4.nnnd p)d5je (wm-l,mhuvelength of 3.0 m3 :ddp 4,u4 nu)(5m z(nbpjfh,dw lej-nwndm. ?

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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 u kuv(n/(g+3zia(dvv* y g5,2bbbehwof a wave that has a wavelength of 3.0 m and a frequency ofguiybvuz(bw ave*v+ /2d(3gh ,k 5n(b 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 travez+a f*p 9btsml;t z3/ fzn.;hqling 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 under a tension of 1350 N. moh3s* 9sbj2z0v orow6z.3 pv What is the w32. wb v6 zjovm 3*poozrh09ssave 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. lzfb,,;dtvc((kxls us-u4l faw8+ g6 What is the velocity of propagation of transverse waves alucb(s ;lw(,lu,svax -t+4kfgzd6f8 l ong 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 50irdvf 1j6sgr- 5fp 5i9lbp (6oyp 73vc0 m long wire whose total marvv9j(fr5c5 p sf6 6po1g-lpbdy 7i 3iss 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 transverse wave on a 2.0-m longzg c wilcwws i.oy;v4+7c3n 5/ string fixed at both ends is 200 m/s. Which one of the following is not a resonant freqs5owz l3c/i w; +iv7w.n 4cycguency 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 84d ah-hklh9 ih)pq l8of 500 Hz, which one of the following frequencies can )h9h-8hq hak4 p8lldi 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 have four equal segments in a standing wtip8ew14 m +ko95 qtkzave driven at a frequency of 4kkt 1teqzw 4m9+5 p8io80 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 boty qjxwee65+8s8.o yq qh ends, vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to contain 4 l. +qe8q 6qs x8e5jowyyoops?

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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 smlhrsi q1 -05jhould its length ijr-10 qlhm5 sbe 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 string of d1e-jp ;:q d7i,)k3ly qbc hxi3lqyk3linear mass density 2.00 g/m and length 0.ex;lqikq b:ip7dqk )c 3yl3y1 dh-j ,3600 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 2.59-d z2 ja*y)agf6gyii m is fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops i*92gaiaj)dz6yy fg- 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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