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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 periodzk4-5klo 8 giric 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 un:j jg+,dvu:xzt6zf c .it 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 fromzrd ln7*0 u *jc-2mimqr -kpl+ the equilibrium point is called tld-kq z m7* 2pmr-n0+clu*i rjhe

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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 displaceme+hn w-+ b cb9nu2bp2l)yo)hfmnt from equilibrium, its instcb mufh 9w+)yb2) o- nl+2pnbhantaneous 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 massrz m1o:6p7n(tmuf gr) passes through the equilibrium po61:onzr( 7 mgu )pftrmsition, 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 SHsivooz-t;2d ) umu6*gM. When the mass is at maximum displacement from equilibrium, its instantaneous accelv) suo*mozi;g6 2-udteration

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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 fkv3c:7,z4k jwrhm 3 aand B. Where is the mass located when its kinetic energy is a 3z:k,7rmchkwajf4 v3minimum?

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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 doifcz t;r27 ke)wn between points A and B. e;2 tc7ifk)rz Where is the mass located when its kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vert,s9 - *sjkiifl/s uxst: 4(xygical spring and bobs up and down between points A and B. Where is the mass located klxx(4 sist9:- is* sjuy,/gfwhen its potential 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 ak /w*q(c cixfs9r 0mfl.)w9jw t ffc09ab-0 fm vertical spring and bobs up and down between points A and B. Where is the mass located when its potential c9w)fwb r9slmq. xf*w0j/cf c -ftia (09k0fmenergy 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 what /mut8.f .z+6(rnclx .oaoeht effect on theuxca.o.8lzht f/ +em. onr(6t 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 vibrating m:p h6b9ere./lc z6s wnass-and-spring system produces what effect onhse9l6b.cnpezw :r6/ 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 constant of a vibrating mass-and-spring system pro36idz 7els s(iduces what effect on th3(6 lsezid i7se 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 ong w99h:qc sp 41swoy/a the end of a spring, both on Earth and on the Moon. Where iy1 4/q:9wcwa9ogss hps 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 ofo sb-o/xz g:p+h1ykk5a,w ko1 a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system',wgb1-5a+/zo k:ksyo1 xpokhs 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 mabfa, k1d ifw),g a(17s4p t r7lh 9)fezd5qntiss-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in thezsq t71fw)id174it(9 f l, 5ar n)kaepfdhbg, 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 amplit.2c x kj9 j9jp gs5si)rjk(ws8ude of a mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no other chrgjx)ckkws9sj j ( 5i.pj829sanges 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 m0us-(j9vlv y sass M attached to a weightless string of length L. For this system, when undergoing small- (sl0vy js9vu 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 tripokc 692 ji8tkeled, the time required for one complete vibrat8ko9iec j26k tion

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and Bf(hlc6q7u th4ja* je+ are 3.0 m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the period6uq7+aejhljf t(* ch4 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 foc6gaju+m pghl :08p3lz*tw*cr one complete vibration incrj*gpmzp+3:80g*cchl wu l a t6eases 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 05f f 6,t4mpteer )qfdboth its length and mass are incre q0f5dp ft)6rtmf, ee4ased?

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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 fr7x) rsq;hn7h( havsu e* .c5jk )7qjtrequency of simple pendulum)h h qqr5c77x7)*h(s; enjruj ka.stv 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, whej tr83b -i4hdure the acceleration of gravity is less than on Earth, the resonant fu iht84drb j3-requency 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 repre abuivwa1,9tv-bf10zg/q /kqsents


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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 repr67hso pf7kix*5e8e bsesents


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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 repres5 yh-7 qwwau6g7cg+v5x ou3 dients


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibrationlx gmou4 0dx*fp+dz6ydw n6 g,u39fa., the amplitude of vibration is found to depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacemle 2vebq*/5noh :b/u2yghpt/- dq 0sg ent of points of the wave from equilibrium is called tod20 *hsbetqvbgen2/hpy /- / gql:5uhe 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 successive crests on a wave is called t q3 ( cr8qs xlfy0hn3qc*gu3c(he 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.uup, p v6dbj3 a wave passing a point per unit time is called the wave' jupp.v ud3,6bs

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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 wavelengxk b;egxmp;; 4 8bv7ogth 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 distancb0 xck 4l f1vg*d/v;i(/th( e2ywolpa e between successive crests if the speed remains con v(0(p/ ckbxit4vf e2yad/ll wg*;oh 1stant?

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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 seconafgy f o32y-r5*hkd; td wave on the same string has wavelength 2l and travels with the same velocity. What h ra5*dkty gf32;yf-ois 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 e4fhyy 9gs/36ga 9gq rstanding wave is set up. Which of the following is ge/gg y6q ryha93f s94true?

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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 i5evykbdd(i;edn (+*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 mass of the string is inn(e* vd;dibidky e+5(creased 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 lengthrs/up ctf)c,5 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 is increased to 2L, with no change in ,rcc5/) stu pfmass?

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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 speedv(du l; kp;j(t of a wave in the string is v. What will be the speed of a wave in the string if the tension is increk(lt;( j;d uvpased 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 wan*cb8*ggg 5jpve. As an S wave travels through the Earth, the relative motion between the S w npgc 8*gb5jg*ave 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 travql5yb0 fb4 n(y;rv+z -mpfnd5 els through the Earth, thef5p f(5b yv;nlb- n4zd m+q0ry 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 i4iqor . h(at*ha3bd 2is

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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 ao5 g)ztxmw8/sl0r 0dz thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the5t8r/xs d0mzlgw)z o 0 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-oajugauy71u5 v:y 3vm+ua q )f3v(ar a string, one is traveling toward the right and the other toward the left. At the point that thyu aqv+u j7y353)aua v1 r:(af v-mguoey occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. The one traverm b- yrq;q*wa6)w.yoc en 1ve8-.yyrfw 07v qling toward the right has a positive amplitude, while the one traveling toward the leftef vwrby1myow*7- - ;.a.06 yvqrqycn r)8qwe 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 f 9lkxedvm/br9j1-:x v :/ y2fdrfsd8oixed 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 7;bcnb5(p qp xfundamental frequency of that string q xpp57;c b(bnwill 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 constwb 6grqm2siab5 -b3 /uant of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended from it/iqub2agw -65sm3rbb?

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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 along a horizontal, ) )bgny+h,brj frictionless surface. The spring is initially stretched by a force of 5.0 N on t+) nb rhg)j,byhe 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 N/m along a mm( 1qhqq / t;f5jj;2mp vi8zjhorizontal, frictionless surface. The spring is initially stretched by a force qvjiqm2/ h8;m j5z( fjqptm1;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 414 q ea-klz)7 v6wx ;sbfqaxpspring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on thele zpa74wx6k)q ;b4favx1 -qs 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 oscillationsablp+jr a, g7 1(gjim3 in 5.0 s. Whij a( 3jgm a1+l,gpr7bat 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 sprwfkuuw: j 4- 5jl00lqpzm .l-wing of spring confkuzujll-4-.ql wp05wwm:j0 stant 20 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 constantnjt xu 9tb y0ov kn0:t( a6qz77gvg52z 20 N/m along a horizontal, frictionless z7 6vuq y5t7v2nb9 angk 0jg: txot(0zsurface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the total energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with amplitude of 4 cm. The energy is 8.0 J at this vlg; q-(6nlid rn-5 oltime. The mass is cut in half, and the system is again set in motion -5nllog-; 6iqr (lvd nwith 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 con5;o+uwq5;tq( wl6p b *ftikqtstant 20 N/m along a horizontal, uo5+l ;pbw;*qtt tkf5 w iq6(qfrictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the amplitude of 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 ofi qpi7h *pu*-ko11qqv 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 p1qv up-ih 71**qq okiat 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 0tydnf 1mz(:fi,(2s-vw fibospring of spring constant 50 N/m and set into simple harmonic motion with anfyio1t0 2f ( fb,vw:d-(msinz 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 attache g0q,azu;wx trxe 7dyy9 ;i8i4d to the end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical enqd ux 79 i;8a tyzyi4g0xr;,weergy 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 22zsnwrk51 fz5xj3m othe free end of an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250jr5zmx2f k23n5 s 1woz 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 displabuu9- ck jw.j1:witif -(ap 0jk e.xd+ced 10 cm from its equilibrium position and rel +ue af.ik: w 9- ck.pj10wjdi(-butjxeased. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/m. The objeztrf/2+wh e*e; z1cquct is displacedq 1f;*eurz2+ h/zew tc by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/m9rzqh: j :u/rqnq.f 3m. The object is displaced byr/f qm3:u :zrhnq9 qj.
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 9f7iut1 xd*ocktvj(9 a spring of spring constant 18 N/m, displaced slightly from its equilibrium position, and released. What is the freuf1cvd*jit7t 9 x(o k9quency 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 osc1 ytu.2kz5mhu illates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity a5y.uh 1m2 uztkttained 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 ;fz 4k(9dfmy ito 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 of A compare to the maximum spe ;(mykzi4 9fdfed 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. Innc8-hsn2f7a8p .bvg)/ni u ll equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additionf8vlpsn)8 7 u.cnl2abgh- /i nal distance of 1.0 cm down and released from rest. Calculate the period of oscillation.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mass stretz fxakbq6gvrmm7 +6++ches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cmvgf+q7 mzamr6+6 +bkx 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 m5sz *pehuy *rkf,/xp+azlh. )fli )o* ass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. lezf*p.xr i/) +*y) kzs*uhloa ph5f,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 posidz /k)rtjq u lb(zuiy0(9-1 ovtion versus time equat1qoz9 d0yt/kz()irvuuj( l b-ion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harznx,w 0uqdu)/l/2uz emonic motion obeys the following position versus time equatixd,/ewzl 2 zq)/uu0n uon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 obeyszw,b )jnb :0m.n leaw1d1uy 3l the following position versus time equ, 1mb1zjluln ebwn.w y:3da 0)ation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 simple harmonic mox7u 8ru rbj4ys2tpf2 :gdm 5+ttion according to the4ug2u82 5s7r t fxm+pyb j:rtd equation $y = 0.50 \; \sin (18\pi \times t)$ 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 spty5tn:3nv dvw(6 u:gb+h-7w env u7siring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, n:w7hwv e :(t6b 5viu7tyv3+ndgsnu - 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 swings in 8.0 s. (a) What are its frnhba:p/ djxc+1 b/ gp)equency and period on +c jpx)b: pn db1h//agEarth?

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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 lon7k9 :qgzj* ru l;3r8tz.krwa qg. 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. Wu:ie p0yb(gt4hat 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 period on the Ea.d+ e,xf ,xkpbrt bx+fdpke .,,xh?

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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 1w5xjgy9kmlf (,o lh r5(3tkdjgy 70 .r.0 m long. What is its period on the Moon wherem3yfrw0(kltjg.gxk 5 jlh 5,o9(yr d7 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 0.25-kg t;ylw;:*f/f ngfvyb92 mtq t dk ul9(5spherical 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. What frequency would have resulted if a 0.lgl9mdwyqyn*; ttf25 k :v; 9/ftfu( b50-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 displ wwhr3;r8dc- t; b/fywacement of 8.0e. It oscillates with a period of 3.00w;3 trd fchrb;/-8w yw 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 wavss50a sy f *up68isrs.e is 120 Hz. Whas r 8.s ips05ss*uayf6t 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 wave at ncvel (y6sxkah8 ) kcn-d4.f* a given time. The frequency of the wave is 120 Hn )6kal knxhe-c.v d8 *ycs(4fz. 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 at a given time. The frequency of in-3st ovmjp6xq-,v46y)ah cthe wave is 120 Hz. What is t3)oa m p c,4qsj-v6n-yvihx6 the wave speed?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a wave which has a period of 6.00 r/1cv,j.dza384 bse x h*ogpwms?

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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 1(6 zfb x3ic6tnu7+l2nqlacp2 500 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 frequen g g0f68ik ataw:*wnn.cy of 12 Hz and a wavelength of 3.t8iw. 6ng gka0wn*: af0 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 ay 1ie sco+gi,6 wavelength of 3.0 m and a frequency of 12 e6 g+oiciy1 ,sHz?

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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 w1mxgw ,etk 4:mave 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 0.0050 kg/m is under a tension ozvfx10mm4 xmc.er n)7 f 1350 N. What is thmcn 4zmm) f.01e7xrxve 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/m is under a tension ofh6)jyxw ubg71 180 N. What is the velocity of propagation of transverse waves along thewjh )671guyb x 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 travelingatv sw)/q b(wcjny/q/: w7v5v down a 500 m long wire whose total ma/bjcs 7t :(vww v/)vqaw5n/q yss 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 trani+ s1mx+ tfor 6.r)hlapw6b4 psverse wave on a 2.0-m long string fixed at both r s+xa w4f+ lp61.6r)ipobmhtends 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 fuzyq+. kz.a-r 3)crw fyndamental frequency of 500 Hz, which one of the following frequencies can set the string into rarz ywf.)zkq.r3 -y c+esonant 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 wavy;cculf 9rk((lkby; 1t6*ep ce +f m:be driven at a frequency of 480 Hz. What driving frebec 9rymt (6 ;fkfclb+y1c pu (*el:k;quency 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, vibrates at a frequency odbg) a*g4 8sicf 12 Hz with a standing transverse wave pattern containing 3 loops. What frequen8*b 4aigdc)sgcy 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 density 1.5 g/m is under a tension of 20 N. - bjrp s,rj4tcl91 4ao6o)l mn What should its length be if its fundamental resonance frequency oorlars tp4j n) -b496jmcl1, 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 linear mass del5kuh 9u+;cs f7x;zxf nsity 2.00 g/m and length 0.600 m when it cz5lus xufx k;+f7h9; 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. When the string vibrates afxc 1 o(e73ffit a frequency of 85 Hz, a standing wave wi7co(3fffi x e1th 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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