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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 periodic prog4 s/dwm9e9fgh82rt c1 hdl2k cess 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 ov/ j gs) 1h:ovay)lj+0hbus,um1 :ylvpmwy17 f 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, thi yd 1z .fj//qjm+)sxwe maximum displacement from the equilibrium point is called th 1w /+q)xj/yz.d sifmje

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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. Whew izy sqc**k,is( (6srn the mass is at its maximum displacement from equilibrium, ik(**,qzyssir (s 6cwits 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 tq.xiw;tlmx. s2 0mu h2hrough the equilibrium position, its qwu mm lx.x.ts 2;02hiinstantaneous 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 i.6gz lcpa-x8qo9l 4s ks at maximum displacement from equilibrium, it x9 scoq8aklz.p-g6l4s 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 1a)uw 9lmhrgq/ ,upm2up and down between points A and B. Whemaphw)9 u1r/l2um,g qre is the mass located 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 vertical spring and bobs up and down be*-1(/n(yzeo hgo wai wtween points A and B. Wo/awz h (*1goi(ny-ewhere 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 vertical spring and bobs up and down between points A; 5slfs8 a;zzted :j)l and B. Where is the mass ;l:;5fles jtdazz8 s) located when 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 a vertics(u l6ne)o7 ricr0o7mal spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a mrrm 67 o)onc0l ius7(eaximum?

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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 whatu+wh;.ltzft )1mv be) effect on the system'sv+uteth) ;f wlz1b .)m 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 masma, e b ddp2.x/kab(/ws-and-spring system produces what effect on the system's mechanical eneab/p/( a. 2kde mw,xbdrgy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the springxtolwco 68kr-) ; f;pb constant of a vibrating mass-and-spring system produces what effect on the system's mechanx8c;6-tpb;ooflwk r )ical 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 e- l:q pyste1tqw 1isl1rhy4):nd of a spring, both on Earth and on the Moon. Where is the peri)rl s:tp1seq-41h w iyy1tl:qod 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 caihmy-+ y8 putxmp74+ruses what kind of change in the resonant frequency of the system? (Assume no cha ip+ mp y-thy7xrm+8u4nge 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-i el gpjl*.rq56el v-(and-spring system causes what kind of change in the resonant frequency of the syst.*e ( 5i q-6ljevprllgem? (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-s(suezg,d , 2lb vu0-au+(u,ej w j*ilbpring system causes what kind of change in the resonant frequency of the system? (eb*,w0z(- u2, dbe+,(j ajis uglvlu uAssume 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 weighi.f6t 4xloyrn,26v:m *n ra qetless string of length L. For this system, when undergoing small 4i .a2fo en qvrlx 6tmn6r*,y: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 gq +eg 1a+7puw .spd(bcomplete vibr(+wag pg1e+d qb7.pusation

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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. ohx62/kqn bp 38ngh(y5m mg0wThe period of A is T. Pendulum A is twice as heavy as pendulum B. What is the perioh5m36 gn 2q o/bnwpym8h( xkg0d 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 c/n ebf4h9q/:rmxiq o2- zyi06z/wuehomplete vibration increases by a facto/ qom :0iibrznez6wuh f 9- //e4yq2hxr 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 botx h w, (a;v5z)s2iwhfah its length and mass are increase5avf (zi hasww,)h2;xd?

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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, v,8n;ft dku*y8bfdn simple pendulum B. Which statement is corre8fb nyvnt ,,k8f*;ud dct?

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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 ;o,xmjdf*u42 faw4s num r *.vto the Moon, where the acceleration of gravity is less than o 4 ;dfxom2r*nj4* af.vsuu,wmn Earth, the resonant frequency of the pendulum will

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 repres.j* 2u-8.wiiepy*xya wzc+ yxents


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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 reprejog7: veakty 5z5jn/u;n/y o(sents


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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 represen v5 98vgv:sy(qmam6h h+ f.cugts


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 amplitude of vibration is found tsl/h 0xtjen 14ja 0ab1o 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 tcw0p1p zzx.a.he wave from equilibrium is called thezpczw .1 0.apx 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 waveenuv i6;vr-*adk1o- u 5ghzm 0 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 ti+2ta/oe ci8 bome is called the wave'b82 +a/ooi cets

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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 w0upesfm71u4 a-8s ,wlbdh)7dab k37yntgy 7 pavelength 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 t 6db,59iz0cywv k50cyr .vquf o the distance between successive crests if the speed v65d ywq ifv0kbr czc.yu05,9 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 wavelength l and frequency f. A second wave on cpj whoo0;;kl2ir 1v0d0 liy9 the same string has wavelength 2l and travels with the same velocity. What is the frequeh0 ll; wj0;k oc01iv2y r9dpoincy 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 st1 2rladst (a2oring of length L, mass M, and tension T. A standing wave is set up. Wh sda2olra t21(ich 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 L is under tension T. The speed2 qdrq k u,igwwjr:2;5 of a wave in the string is v. What will be the speed of a wave in the string if the mas5;d,w iq2gr qw:urj2ks 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 kki0r h,g3yo (length L is under tension T. The speed of a wave in the string is vi(o rkkygh 0,3. What will be the speed of a wave in the string if the length is increased to 2L, with no change in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. Thejnu 9 fzcr1lkkg8j0mr/2ln e+51dx4w speed of a wave in the string is v. What will be the speed of a wave in l1uz1k w 5xj8+lmc/rk0r2j9fg d n 4enthe 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 wavw8prv 3/ 9sbrte is a transverse wave. As an S wave travels through the Earth/pw r8rbs 3tv9, the relative 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 wzjt3q is2w2v xo mz5 :b7(d+yg oo):xbave is a longitudinal wave. As a P wave travels through the Earth, the relative motion between the P wave and t25+2t:q vo3ibo(gwxmydo 7sjx ) :zzbhe 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 2.mv .w)xorg90na(pwj rb hi/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 thin cord reacheqd l1q n-01 ukbzr 32cm5dgmn)s a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and trans 25n-dk l3rcqm1mn0zq b )ugd1mitted 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 +4udb9yr.7j lcjzf8ypositive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same region y+drzj4 yc 79f.bl 8juof 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 wc6v, x ww9 d2my8-vrmone traveling toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direcd8m,v- wwycmw6 vx r92tion. 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 bot :vz.x,-ir fh;9zos cc;ujdp 1h 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 fun uawav,.1aas;gja8),s j gg9qdamental frequency of that string will increase by a f)a9w,agaasg18 a, v q;gj. ujsactor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring constant of a spring that stretches 2.00 cm when a mass of 0.at b2 r +rfd4io:86;rq*luobn600 kg is suspended from itr6 fbqola+on*; ut42rd:rb8 i?

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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 ho5swlag11tdl + rizontal, 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 amplit1tl +l1a5wgdsude?

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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 spriyoi4l)vzis02( w4ysonyv+lc-* v3 i ing 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 wsz i*iyl(nyv vc+syoio34i)4l v -200.50 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 consta+y7d 8iu1. xhdnge 8kjnt 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 freq 1yhxi8nuj8 +k7degd. uency 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 *kje-sjr+v3d2 ru7uu . It goes through 10 complete oscillations in 5.0 s. Whav eu-kr7+ d3rsj*2 ujut 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 backen0t :r 3ai6lp a07hveidp1z 6 and 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 energy of this vibrating mass when it is 0.30 m from iihea:a n 7zv03lr0t66e d ipp1ts 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 toiwvs ha85pfmr0j 5(py. tf5e 9 a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonip(sp .wj55fta0v5 yhr9 eif8m c 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 energjtio+m :0y) xnnq.,a wy is 8.0 J at this time. The mass is cunja:ytomnxq w) +0i., t in 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 attached to a spring of spring constant 20 N/m along 55l d-c6z2erunzap,h a horizontal, frictionless surface. The object oscirduh65l-5z2e z,ac pnllates 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+,z)wvi j1wvf t 20 N/m along a horizontal, frictionless surfw+wzivj,1)f v ace. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attachedtvy nne8hk;9 .9iajzxk(v+:y 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 vkh ;x9: +ie8k nyvn(.ytzja9total 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 o9 :,-ll5+pi4,a xlmw ydzvzvm f spring constant 50 N/m and set into simple hm aidz4v9w ll,l5z :my-+p,xvarmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideal spring i txo)*kuf6- agl*e-iof spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinet-ae*x-gt lf6i * )okiuic 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 equilibzn;uah (g5z8j rium position and released. A ghu; ajnz58z( 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 e8a o+ q:imjg8a spring of spring constant 10 N/m. The object is displaced by:iea+ mjgq8o 8
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/m. The object id pkuy( )yr54f;n3lob s d3 kuyl)by f5prno(; 4displaced 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 fro tan)ea0 sr.9)7lozobm a spring of spring constant 18 N/m, displaced slightly frros07))zoea9l bna t. om its equilibrium position, and released. 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 when ,ppk ;wzp; a nl2ca+3xdisplaced a distance of 2.0 cm from equilibrium and released. What is the maximum;,+cppk2 wznlaxa3p; 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 vibrates with amdh4t(g qt gdc ;t+)f;bplitude of 8.0 cm at a frequency of 10 Hz an4)gdqhtfcgdt ;(t; +bd 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 stretchcm21 s t-dv0aqes the spring 2.0 cm downward. The mvs-a1q2 m0d tcass is then pulled an additional 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 str84v0 sg7 ; ctrw1*zxc d0m;eassnove*etches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Calculaarcv80s1o 7 *ne 0s;tv* cs;ewz4xmdg te 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 equilibrk,c6s t0hn)cq14bpjuium the mass stretches the spring 2.0 cm downward1qtuncpbs j) 4 h0c6k,. The mass is then pulled an additional 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 versus /a4i4nszbph rl1sl3 ,time equasrln l,z4/ahp4i 3b1stion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 motionidt cd/b( u+9 tz9ry:m obeys the following position versus time equati9u9id:c+tbt ( zyrd/mon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 ha6.tlb q4dfbw8/c :br armonic motion obeys the following position versus time equaw 6dt q4f.b /:rb8cblation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 6nb 88o 4gsev02it,ijr wgmx9 end of a spring executes simple harmonic motion according to the eq8 i6,2os 9 envi0r4xwgjb8g tmuation $y = 0.50 \; \sin (18\pi \times t)$ 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 oscillateswe2hx5t3 o f07hmysi;eez0(xcn:to, on a horizontal, frictionless track. At t= 0, the mass is relmh 2(i: to f soz ,5whe0nce;exx0y3t7eased from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings g 5ci0b9:i(v)4lnsqf/tfze qs sso4 7in 8.0 s. (a) What are its frequency and period b/ :lzn ts5isf4) s7(0cq49gsfv qoeion 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 long. What is itmj s iy.m3b(hoe3px(ai( 2i5ys 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 i d lfl/9*,o95 sevtea69dupefts 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 lon(0tv(dd2o m7rci l za+g. What is its period on the Earth?(dlc 02ri d(oaz7vt+ m

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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. +a)hppxa,rje1 e);ymy( dua2 What is its period on the Moon where the acceleration due to +ha djp;2 pmura )a 1xyey,()egravity 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 spherical mass attac6 .kqw e/* aa-7gylb*fy+u sgrhed 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 0.50-kg mass (same diameter sphere) had been a*7kw.*-la+bga grsq6ye /f uy ttached 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 ay+j3gf 4 oeni3 gz7e/omh+m +angular displacement of 8.0e. e/++4joe+omg ym gh3 zi73anf It oscillates 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 wave at a given time. The frequhnqd5u/ny62xg7y w4z jvxo7og8 j,9 b -x4witency of the wave is 120 x,6qoy u x8jn4 vjy2 wn5ow9dg7z-b4xh/gt7i Hz. What is the amplitude?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a given time. The frequency of sz(c59vcixq s/x+k(dj di6h0 the wave is 120 Hz. What is thxcvz( hiqxs09+( 5i /6jkcdd se 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 fre vrjlf;s 2 2dtte.wk/*quency of the wave is 120 H/ttlsvj 2k; d*wf 2.rez. What is 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 ahb* )d* 6 /7g6uj; hrqnpoppmz 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 wave6r/v5i 2juy (zt0sr/l eolnv0lnpu ;, with a frequency of 1500 Hz?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wave spee/qjt( uk da 5g9sp8w7ld if a wave has a frequency of 12 Hz and a wavelength of 3.u7 qd /t(pa kgl5jw89s0 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 that3va,iu y8hka7 has a wavelength of 3.0 m and a frequency of 1,vyka hu3ia8 72 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 owd;:anc t 7xk9h8an6xy w0*kif a 2.5 m wave traveling at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/m is under a tension of 1350 N h;qhh 9d9x ;ow0u53wtvi9toc. What is the wavx 5o 9w9t;hw9ov i3dh;t0hqcue 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 tensio w5whb9,dhi/ jz(b9 hzn of 180 N. What is the velocity of wh9b ,(5h izb/whz9jdpropagation of 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 traveling down a 500 m long wir9gb,j** suztwd hwqm+,-0 rh ve whose tota,w+b*9w h, t * hjsmuqr-dzv0gl mass is
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagation of a transverse +(lvz;a rp;fk wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequ(;vp; fzkl r+aency 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 of 500 Hz, which one of the fol9lr*knv a acp(bp: *(vlowing frequencies can set the string intab ra c*l (k:9pv*pn(vo 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 wavrpaazd 6r.+ :xe driven at a frequency of 480 Hz. 6rpa.zaxr d +: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 both3.-3o dsufpg q1rw +iv ends, vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standins3uo3- rp w1iqfdv+.gg 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 o 14uto 0pm,coa tension of 20 N. What should its length be if its fundamental resonance frequency is 22mc 14o,ot up0o0 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 density 2.0i4 te22en /ol5 rn51vka51y zhra7apy0 g/m and length 0.600 m when it ih5y2ay7 5n4ra nte5epiv1o /1 z2lrak s 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. Wq/-wtn 3pqi0fhen the string vibrates at a frequency of 85 Hz, a standing wave with five loops is foiwt0qp -/fn3qrmed.
(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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