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习题练习:Physics Unit11: Vibrations and Waves



 作者: admin发布日期: 2022-08-06 21:32   总分: 99分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月06日 21:32  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The time for one cycle of a periodic process is calp(7v ;u 6c;lv;3+od +uv8tco colozgoled 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 w.4 d4td*z 2ceo,fskoc3s i. gtime 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 maximum5 x *yeh) 7wh3xbiq+5vr3q*r6 (fmfg(rhyapk displacement from the equilibrium point is called t 7hbvr(ha)(m q*e 6hf ywi*rrpf5x3g3qx 5 y+khe

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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 y5 ;rv8sui1jew m :wf5-9c smaat its maximum displacement fromr u-:ei1asw;s5fcmw95 vm8j y equilibrium, 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 through the equilibrjds97if68k) bl8 gj+s -4 ngq, yoexgmium position, its instantaneous velmg 6fssky8edql4iob8 )n jgx-gj+7 , 9ocity

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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 ma6y-qz4 a0mpr lximum displacement from eyqml 04-z ap6rquilibrium, 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 an5/t5h +dqq atgd B. Where is the mass logtt /q+qhd5a 5cated when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a verticaa 4i,fe4 4-jdyy;jsce l spring and bobs up and down between points A and B. Where is the mass located when its kinetic energyea;4ie4sdc y,fj-4 jy 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 sprig8-jy kfa3q m-ng and bobs up and down between points A and B. Where is the mass located when its potential enerf- k-amyj 83gqgy 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 and down betweufb/;xl avnkl3,/. xpen points A and B. Where is the mass located when its potentiaabk.u/lp3fxlx, nv /;l 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 produce kkf29-.ih qur r.gg:fs what effect onkgg- 9rqffhr. u ik.:2 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 vibrating mass-and-spring hn;ant -kssiv 9+p ovm;ir/42system produces what effect on the system's mechani iv;i;mpnv+4s h/ 2 9-stkrnaocal 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 0nui8)epk4v ivibrating mass-and-spring system produces what effect on the system's mechanicalu8n0)viipe 4 k 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 springbm vrm; 80xi(i9:c / l/wd/xmju3 dupx, both on Earth and on the Moon. Where is the prx 9/i:x xmb3wmcl (idmp80/v ;u/djueriod 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-spring system causes what kind 3ghep /uc0g tx ;,2pphv0tl 1)3cppegof change in the resonant frequency of the system? (Assume no change in the system's mas2);h 1,cu3p gepv e0t/ hg0p3t plgcpxs 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 causf,h +xyss6v4wc d -t:qes what kind of change in the resonant frequency of the system? (Assume no change in the system's spring v6hq4w-t d,cs+x sf:yconstant 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 what kind ofe*nvmj8lqo0*p1y f/u change in the resju* o0/fp* 8lnmy1qve onant 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 consi ryg0s(q+ fpf7r5s +wysts of a mass M attached to a weightless string of lengthsr0(sf +pyf+gy5 rq7w L. For 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 tripled, the time required for one comp24/ iz e55lwy x: llxd1yx5lgplete vibratio5i2lgzlp /y: xyx55 le1lw4xdn

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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.suo /li l-b:)k0 m long. The period of A is T. Pendulum A is twice u: ) klbo/li-sas heavy as 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 penf q2qx0 v id:sbp0d87/lh1f1rvt uo7g dulum is tripled, the time for one complete vibration increases by a facto72 boqfuv0lxh/8rv11 di70d: s fqpt gr 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 pendd3a 3s2*tmgrxulum's frequency if both its length and mass are increased?3r t g*smax32d

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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 simpozn f*+fg4p+3d u+lffle pendulum B. Which statement is correct?*++l+pffgnuo zdf 34f

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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 acceleratioc:wwbdi(; / skn of gravity is less than on Earth, the cb(w/d;i: wsk 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 repre p3ag,jjq8sj zn6x82asents


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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 repres+f qx:w)y )gaw)bhnd5ents


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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 represtj * /x9og*qrs6bppc13w4aek ents


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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 ;n8u,amc .eijo5n1:zfvbyh0bfu q99r l 29v r 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 eqmc /22 h x(ejmpwkhat *sz6yl1 m0bm99uilibrium is calleepw2m/bz9a mk (t9 6l jxm sh*c10hmy2d the wave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between successive crests on a wave is called ny 5a6 3bi1f4lz-xc u h1q4lokthe 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 pas:z9q(d :y jtj 6cqxzz+sing a point per unit time is called the wave'(jz:t qzzj96d:+yxqc s

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequency times th abw:b6d*u j/4+h6dvqrwhj c 3e 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 wa+dqs47u3iu2:x glx cwcfx( h;ve increases. What happens to the distance between successive crests4;w3h ud:xxcxs7fluq i+2c( g if the speed 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 wn7(pj(l*p1 /mbakozyavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the frequency of the sepmj z* a7 n(/o(p1bkylcond 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 sjx16/zyuo+p utanding wave is set up. Which xpy1+uoz j6u /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 and length 4y* tq.9(qqa. ahaxolL is under tension T. The speed of a wave in the string is v.tq9 *.h4oxlq(.aaaqy 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 anh t4cenwhzhv o+ x;t0 0pmwe-1 m8- lnyg:b0t9d length 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 chano hvt0 :y; emce+-gnzph-h0 8w9x04tmb1wt lnge 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 tensly f6 46 6) j3g/pcyfkwavmje(ion 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 inm jkvja y /cyge3)(f6l4w66p fcreased 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. A:1 aa fnwhjcx1ud p29)vv rk-/s an S wave travels through the Earth, the relative apfvxkdj1r9 2)/v1 ancuwh -: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. o a 9yzp 4(6g3o2wprsuAs a P wave travels through the Earth, the relative motion between the P wave anz6s3 4(aogyp2p ro9 uwd 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 wap *8*emr5kie;i 1t az ,nsi-po4s.ootve 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 thi (,cfks+wo)vwzg p 2b+qv8p l3n cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and translcf3b g)w+pzk+s8(,2v oq wvpmitted 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 equzyj)7 :,g.-f kvejk69u ce dhhal positive amplitudes pass each other on a string, one is traveling toward the right and the other towardhuvej-j fkkhez69gy7 cd,.:) 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 on a string. The one traveling toward the rhon j+u2 tkwd5w. 9:h1ze6veuight has a positive amplitude, okuh :6we2zeudw .nv1 5+h9 jtwhile 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 at both ends, occurrpc -dsqqp 6f16 g0zv1v rm3/oxk08wfs 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, tpq l50:vjo: arhe fundamental frequency of that string will increav lqj :0ar5op:se 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 c*c. bgr 4y:gaa spring that stretches 2.00 cm when a mass of 0.600 kg is suspended fc ar by:g*cg4.rom 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 sprnh ji 9/0-ccusing 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 amplitudccnhsi/9 uj -0e?

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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 hori2zn2nf dw7 )kczontal, frictionless surface. The spring is initially stretched by a force of 5.w2dfcn )72nzk0 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 horizontal cms7x/coe+;j j5qcl-, frictionless surface. The spring is initially stretched by a5o+ esqjcmc j-c7x;/l force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the frequency of oscillation?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoze tt1tjq, )n,0+k rgmes SHM. It goes through 10 complete oscillations in 5.0 s. What is th, t1,0rne) jtkzmt+qg e 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 a zq-r;uxs+a 8.x;svppnd forth from the free end of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the kinetic energypvxuxr8-+pq;s ; sa .z 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 s:dr7phw *xwga7(* hv pl zv5wa-+, vswpring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a spw 7dshpvwg ,* xr wvpl7(z+*-a:awhv5eed 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.mz ip*(v 7ye6rx ,jy1f The energy is 8.0 J at this time. The mass is cut inr1pe7 vz6myij ,x*(y f half, and the system 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 attach2.gtyd4nhpo u4mpa4 : ed 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. What is thp2y.gnp4:4 4 huoadmte amplitude of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m ag(u8)a* 8 0gf h lmfpxwkr,ar)long 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)*0u mk(lga hxaw 8p8ffrgr), 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 spr;e7j fec 3h8iiuzcdv .yo78 h7yjo*v6ing constant 50 N/m and set into simple harmonic motioh i oyje 6dofuejhi.vy8 c7738*czv ;7n 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 horizontal spring of spring constantf,u/3t h+z1nu*pab cl 50 N/m and set/h* c pnu+ufla,t1z3b 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 ntsivjbg9urw ) e)m q8a6j:njn,88+iof an ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy of+j89)n:8u sej)abti vn jg wrn68, imq 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 equilibrium i:fo9+ if(kfwxp ;( ys eoanb6+/7sdq position ande67 nwkfb fsosi9+o(i( : adqp+ ;fx/y released. 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 consi+:fp mtd,*/k mmn ep7tant 10 N/m. The object is displan+ ppt/*ie k7:d mf,mmced 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 azi 2/btd7 ix/fttached to a spring of spring constant 10 N/m. The object is 2z dxb7iit/ /fdisplaced by
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is hung from a spring of spring constant 18 N/m, displacg,*ph bzr8;xtec w; wurp5t )ip0 6a8ped slightly from its equilibrium position, and 8 ep*w6r;, 8ha ;zup) gr5x0itbp pctwreleased. 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. 4 crmt(e,kmkq .9)ddv It oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and rel ,4det)9.(rm kvqdmck eased. 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 springsiixf+/x /uqvm n +;:dh. Mass A vibrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrath:n+ qfdx i/i+mvu/x ;es 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 stretches6:bw b7 vzq;wm 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 period of oscillation 6zmbqvww;7:b .

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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 jwun ,4e( e,gdd/1wqcl8a)a x equilibrium the 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 totald,lqxu)aw d( ,wg / c8eajn1e4 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. qqm*ip/z7 rsy)k*5c i In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additio 7 mizi/*ys)k rp*c5qqnal 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 position vzm p(/j)aus q7e0r k.yersus time equati ye ra0/z(7)pq sjmuk.on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 position versus tbm3 mae*c vf.eyb3/ckx1+ f-j ime equatiofexv ce/b1y- bm.jm3 fka+ 3*cn:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmonifw biv.m5l6 i(e vrb23c motion obeys the following position versus time equationw bimlfe63i.b(vv r5 2:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 mot g-*:6 i bphbfuu9f)vtion according to the etupug 6 fb-b*:9vfhi)quation $y = 0.50 \; \sin (18\pi \times t)$ 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 s *vi8ni; xwbzbe*zs)y d 22ktj-/2l boscillates on a horizontal, 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)ewtdzsv 2*- b2/*28lnibjs ik;ybxz.)
(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 swivu/wlg;.b -o*qquca 7ngs in 8.0 s. (a) What are its frequency and period /u.gw -a q;v7*cob uqlon 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 28.84 m l) p5kbks:rs/ f1a3s/tls 3hnqong. 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 22 uw9)ytyyj ( ewsk;2n.0 s on Earth. What is its length?

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather clock is 1.0 m long. What is its period on the +al, ;rcm0w 22tes5koly*b s iEarthy52al*oclbk 2rmts ;,swie0 +?

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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. 0+yog2e :v4 ve ht;rnk What is its period on the Moon where the accele4n h0:kgye+vvr ;e2o tration 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 0dj,m 0mq b w*/bnzot)(.25-kg spherical 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 frequeqtb*0 )(/w znj, bdmomncy 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 anguwt2fe a299 kmular displacement of 8.0e. It ew9u 22f tm9kaoscillates with a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wa56bj k;4sm:bewdx9veje3) mjve at a given time. The frequency of the wave is 120 Hz. What is the amp6) ;k94b jvbm emd3 5eejw:jsxlitude?


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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 time. The frequency of the walr ,x1i9e/b 7 tohk1bove is 120 Hrboh1k, 1 t7bxle9/ioz. 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 vnbze/u2 j xf6+fp)g2at a given time. The frequency of the wave is 120 Hz. What is the we+)6b g/uzjpfv2 f2nx ave 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 mj/8fgox0 * nzof 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 1500n-c jqt20xm4zp -qpm- 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 wavehjeh x gviy(d9,i9h r1);zhx45huj,nlength of 3.0 ;dr h59v1x ey)z,n uh9xihhg (j4,hjim?

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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 and a frequency pm7t8) ry o0jkt(upt2 of py( mtt ou870 k2pj)tr12 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 trave 63-o 3rtg9cdlx3yjp kling 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 linea4rvjb2 -wx tymp4jw+ + lq+o4kr mass density 0.0050 kg/m is under a tension of 1350 N. What i kmvbpow +xy2rj4q4w+ tl+j 4-s the 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 of 180 N. What is ypoc50 r7ri/o wyk4q 0the velocity of propagation of c0/wor7kqo4 i05 yypr transverse 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 tfu j4b/7 j:ja3peb2ggwq1fd, raveling down a 500 m long wire whose total mafwf34 1ju ejgb b:/gd2 qpja,7ss 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 lo17w cm4nps*xt ng string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequency of this str tw1mxc7*4nsp ing?

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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 of 500 Hz, which one of the follok/8 mr/-f kcqqwing frequencies can set the stringcr kkqmf8-q// 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 2epbv z loz;b 8ntrcu-0p(r ;7standing wave driven at a frequency of 480 Hz. What drb( upleo; 0z- tbzp7ncr2;8rviving frequency will set up a standing wave with five equal segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at both ends+(ym:-ortb wemysju (-a,,hrv tzs35 , vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave ps-yshw+y:mj ar, t(rvet (,z3b5ou m-attern 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 densit sthdp69tnzj7g,6r *2ouwa1pj4zp l+y 1.5 g/m is under a tension of 20 N. What should its length be if its fundamental resonance fresd 2,4twpjh9 ul *n+o jpa6p7tz1 r6zgquency 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 ma)qky+nrey (-ess density 2.00 g/m and length 0.600 m when it is subj+y(k) qrne- yeected 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. Wqapu gp9, 98syiy hn,8hen the string vibrates at a fp psyng,ui9a 89q8,hy requency of 85 Hz, a standing wave with five loops is formed.
(a) Determine the distance between two adjacent nodes.
(b) Determine the wavelength of the waves that travel on the string.
(c) Determine the velocity of waves.
(d) Determine the fundamental frequency of this string.
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