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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 a8 ryj ccvquh,n 7.+rxhwz+-0p periodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number ofehrhuauk j0) nq:t7+ s7i d32f cycles per unit time is called the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maxisb-d 52biuyg 3mum displacement from the equilibrium point is cg b2-bsy35 idualled the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes Sy 3u8kl.91tfq ps6n9vz a nd-nHM. When the mass is at its maximum displacement from equilibrium, its instantaneot na8-v.ud ly1z93q9sfk pn6 nus 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 equilibriu7a 6)fneka9 ,trh1i wcm position, its instantaneous rea,ifw1nhc ka t7)69velocity

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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 unde5z9o-yu(up(ep 9n pig rgoes SHM. When the mass is at maximum displacement from equilibrium, its iz95uin p-g( pe (ypu9onstantaneous 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 b-9fum )ox 8- skvjq 9kt;ffaf9v9qe+eobs up and down between points A and B. Where is the mass located when its kinetic energy is amveukst9j9 fkvf+ 8af x;99f)- qoeq- 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 ug:57 j*rin4 -pl rnnavp and down between points A and B. Where is the mass located when its kinep*njr:l7gi4-an 5nv rtic 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 k)pll+,-ydc d spring and bobs up and down between points A and B. Where is the mass located when its potential energy is a m y,cd lp+kld-)inimum?

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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 down5fa- zp78 lh dzbw7wt/ between points A and B. Where is the mass locatedh w-/p7afzl d8b wz7t5 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 p1tmq +g9 pltf0roduces what effect on the system's mechaniclgpft9 t 1m+q0al 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 vi:)grev fi2/8(v0 90om4cxpny dt xc vibrating mass-and-spring system produces what effecr vg dx n(ifei mcp/v:2x98ovcy0)40tt on 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 kb:x)ua8mc m;j j z6a5constant of a vibrating mass-and-spring system produces mc)mj u :jz5bka68x ;awhat effect on the system's mechanical energy?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass oscillates on the end of -e 5cb*wzg* q0ogciro57n, np a spring, both on Earth and on the Moon. Where is t55ewgg0**pn ccz,7 q orobin- he 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 g pudk /k-nk2sam (*(iof a mass-and-spring system causes what kind of change in the re2/k a-s((mgdn uipkk* sonant frequency of the system? (Assume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-anac7im4)3 bfyiy.umo 7i1owf .d-spring system causes what kind of change in the resonant frequency of the syst.)3oiiayfim7b71 .fowu c4y mem? (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 b8gqvz76vw99qadl s : of a mass-and-spring system causes what kind of change i7as9 l:dqq gvbv6z98wn 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 leng 6 ;h;i 4dda+iyi:gqiath L;di6dgq 4yiha; +a ii:. 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 y fvt3:q65w8z81fc0e d eytqdcomplete vibration36v q518 yq:et0ffec8ztdywd

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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 period of A is T. Pendulum A is sj -k0(0ajmqntwice as heavy as pendulum B. What is the pejm 0 0anksqj-(riod 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 si+ 2atz ohk8t:jztqk )-mple pendulum is tripled, the time for one complete vibratio:jz28a hqo ttk-z)+ ktn 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 pendulum's frequency if yqyg, +mao.*7we6v (abxjtt* both its length and mass are increy(yxvjt+qw**7a.ae,g m6obt ased?

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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 frequencnzj) s.eg.f*: bg)d wcy of simple pendulum B. Which statement is correct?fdjg* c:). sbn)ewzg.

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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 acceleration of gravity iska 0my47op*qfbr 1 b,q less than on Earth, the resonant frequency o0o,p*fmq b byaq4r17 kf 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 representrkg v9,ufm :n(s


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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 repzfqa cufor7ka99uueakgr3;p5 e+ / ,3resents


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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. 11-1tl*nn (j 15ancl0ta i0ilm jk90) ut hmuf0*p2 represents


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 vibratioek3b 4j 5wdkw2n 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 ofbj1 2aat pd0z epcxh/.d1m)nt:6-kkd points of the wave from equilibrium is called th2-1/d pbpa kz6exna): .tjkm10hctd de 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 qqe6+yw 2a gw(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 pghgr4;15mxd k5te )v a wave passing a point per unit time is called the wave'e)gm gd v5h4x5rt1;kps

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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 wavelength is the waverhyknu(+2otsh0q/tg o )s m76'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 distance between .j4c wd+vdj 8iej4.bqsuccessive crests if the sic.q.jdjb4d4 8w vj e+peed 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 sec:l(gjo5c* 6hh.n h xw7a0q kiaond wave on the same string has wavelength 2l and travels:g7al nhx6ch*qj oi ka50w.( h 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 lenge ,;uuw(jhi- ag o d,qv4-3bvjth L, mass M, and tension T. A standing wave is set up. Which of the folud;-3,(jh b g q,-4wvuaijovelowing 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 speed of a wave in+*ib7efc yxigl)94qu j 2i+yh the string is v. Whatql9jycgby4u+*i e7+x hfi2)i 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 tejt p m8 aay5x4-fh8k4o-k xkc-nsion T. The speed of a wave in the string is v. What will be the speed of a wave in the strixa-k4xm8 okf5 y- -kja8cpt 4hng 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 leng4iui4tks7wxj 649 y;2l a kac 6yv+oeog:6wkrth 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 4 t;cky7weu4is6:ixkgwlk2o9r 6ya +j4 6 avo 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. ;fo+7433unzybjddi19 y h af pAs an S wave travels through the Earth, the relative motion betwee 3u af43dz;79d y yjfhoi1n+pbn 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 a P wave 8*yxrlqptswb,q)l2y ( t o/slfv90u4travels through the Earth, the relative motion beryb/xosq y4v q20)89l,f p sl(*ltwut tween 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 wah+l):txfn-6u, cg plh ai+;iave 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 reaci,k i9/h*ilug .i xk)nhes a discontinuity where the rope becomes thicker and heavier. What is thnihxi. kkig,)9ilu/*e orientation of the reflected and transmitted pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positive amplitudes pass each other on a str uheyxsdz:i2;4 i,v 6sing, one is traveling toward the right and the other toward the left. At the point that they occupy the same regionzy s; dixvi,6:h4us2 e 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 travelin+:i+cey/- *i mkauemmg toward the right has a positive amplitude, while the one traveling toward the left has an equal amplitude in the negative direction. ik:e umm/ c-e ai+*+myAt 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, 94eprr eylc mrb:8i4 (such as 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 in a vioy* qrws86m-3 kokh-bnlin string, the fundamental frequency of that string will incryns*8b mko6-qrw3 -hk ease by a factor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring constant of a spring that stretches 2.00 cm when a53bv/o2gk1 ousq ff+ * i,fbvk mass of 0.600 kg is suspended from iqk1ou+k3si5,bbf fo2 v* g/vf t?

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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 conshvt3 :gn.n:xg1 aaq) htant 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 oscilla: gnt:hhgqa3 1.v) nxating. 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 horizontal, f fsb6))qme9hs6sb o+ irictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go esbo9 +6b6qh is)fms). 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 tw1,y +h 6ene- t*o5mpzzsot1do a spring of spring constant 60 N/m along a horizontal, frictionless surface. The spring is initially strsp- m5ez,*t1o+z6n yd1 ohtewetched 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 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 osciassp,.n d/5 6kx lici;llations in 5.0 s. What is the perioddaxn/ c,i;5s6ks.l pi?

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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 engksuns*;2)/ gnsj v ;ux*,ohq j sq7xq ,ou:z-d of an ideal spring of spring constant 20 N/m with an amplitude of 0.30 m. What is the jqo gshs-qx7go)/suz,nux ,:;q* uksn*j;v2kinetic 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 at8bj9ygxr+,xyn,cby) of)4 j vtached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscilrxy,gx ))89yo4 +vycfjjbb, nlates 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 wb 87c/l(iqwma/p 3tv qith amplitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in halw3v i/ml/p8act (qqb7 f, 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 sprikri vy2f28e. r4)zjbp k.6hgcng of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic mot kb6.hg2yp .4kf z2 jirv)r8ceion 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 spr0jrdo):rod vy v uq9+v z+j41ming of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what location are the kinetic energy and the potential vju+zmj0o9y1) dor4drv q :v+ 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 attacoh .)1 p9*txndy3czluio: 6dhhed to the end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an c)noi zd:3 yplo9*x61tdh .uh 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 tmsi m*z)pb(7p. pa(ajf ce t93o 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.*b(7.a9jcpte s mp3m)i (zafp 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 anbtk btg+d2vu0)l5v (f ideal spring of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy+b(g502udftk)bl tvv 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 c*e 1 n0qdxr)3rz 1ekk+ucv-fgm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be obseed)xeqrn gf3-c+*k1vz10u rkrved 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 opf 3,ja9 tf 1u)-kukshbject is displaced byfu- fj)9 p ua3hskk1,t
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/mq1h.uyv10u9p cxr ,qj. The object is dr9juc1px.q q,y u1vh 0isplaced 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 sprikqu0zzx9+(5z nl6eij)b,uv ku kic9, ng of spring constant 18 N/m, displaced slightly from uqkzi 6b vzj)i( k,u zkc+9nuxe50l,9its 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 frequenp)wexr,b/y0 i cy of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and relrb)0xy ie pw/,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 springs. Mass A vibrates with -xtqt8.lbyl sr5v)i 5amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency ost q.8ytlbx- 5v5l)ri f 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 stretchey:gt0 tn)s,p hs the spring 2.0 cm downward. The mass is then pulled an additional dist sy,:)pnh0ttg ance 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 sprin69p 2pqu-kdko g. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an9kpp2-uq6ko d 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 equilibrium the +zg n-ju1-ok clys6t4 mass stretches the spr +n-os ky lj4ucg-1zt6ing 2.0 cm downward. 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 hi;ug3ty9 gw-pm5m+ vgarmonic motion obeys the following position versus time equai-u v3twmg+m 95gyp;g 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 obeys tpvl8j4lic a0ef v7lobn6 97+ghe following position versus time equatif l7c+v7oai0n9pv 4 6g8belljon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 following position vuj dsrwc wq,et1o1:yqjr*t- k09 ,u;w ersus time equa,ryo,c-:*j kue s u9j1t0 wqdwwq1;rt tion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmonicd:nw 8.*wls at motion according to the eq. sw8tna*ld w:uation $y = 0.50 \; \sin (18\pi \times t)$ 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 tow ,r:lw4alw4u spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track.wua 4w,rlwl:4 At t= 0, the mass is released 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 in 8.0 s. mxqqpdz (u :57w3jygq34;bh hufir.5 (a) What are its frequency and pexqh. yufg4h uirqbq33dw:(;57zj m5p riod 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 28.84 m longamd-257 4zlheqgm ; vpbwg s;4wkil71 um(jk8. 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. s*m0g(/l -* jkrhf joz 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 t7t3xxyjo qo)d 5(ale)he Earth?ld5y q)3e (xa 7joxto)

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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. What inuls q+:f+(p wgc-1 1h+ ixgtes its period on the Moon where the acceleration1f+ gq1-etliw: c+(+gn shpx u 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 spherical mass attached q bj8fu44y.cnvv-3tb to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequencv4b ft-bjqn4 y8c3.uvy of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g kb8nbi t,q 7)6m0dhd dmass has initial angular displacement of 8.0e. It bdd md )7,8hi0tqn6kboscillates 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 give;rb3f; x;ij3xk/i f,ndjj/x nn time. The frequency of the wave is 120 Hz. Whn j inxj3/k/;bf;r;i,d3 fjxxat 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 wa7gcx(r 0gba .nve at a given time. The frequency of the wave is 120 Hz. What ib7ngac.r0( g xs 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 freqh043 1ibjzn-6cb l wvkuency of the wave is 120 Hz. Whatzwc6 1 -vb0bknhj34il 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 heu5bqt8b, ,djas 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,ei.1p n)qhzw wave 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 speed if a wave has a frequency of 12 Hz and a wavelength;4l oyvg8wckz ))vg o9 of 3.0zlcg )wg9;8vo4v)ok y 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 a wavelength griqvx;o+3*,6z; bgj 9bv4xw putg7g of 3.0 m and a frequency of 12 H7gqovuxzb rx iv6j gp9 +43* ,wbg;t;gz?

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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 traveling at 1400 mb(2pno g(;w3h o*,gacwr eb6t/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 135ya:d wq((;*;ok3pvju iz5bx k0 N. What is the wave spe*5 b(iojvy;k;zpxuqk3w d(a: ed?

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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 densigmuz+4;cli 8 vty 6.0 g/m is under a tension of 180 N. What is the velocity of propagation of transverse waves along theu;8 lvi4z +cgm 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 ml ;iqesp6-y/2ieinm / long wire whose total mass ey6 qip2im/ nsi;el-/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 propagat5 3em. rzr8s)o*r9bv t yol4m+vlzq1mion of a transverse wave on a 2.0-m long string fixed at both vz)v+yl m39oq ml4setrbzr *o m8r.51 ends 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 fundamental f :snvbkm4jj8 r c2xy ow+p5u5;requency of 500 Hz, which one of the following frequencies can set the string into resonan2;5x sryjo:v mc+pn4j8bk5 wu t 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 hav6hr ncqfnmv p10:0v6abg y6;he four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal svnh0yfcpav 1 6q b6gn0m;:r 6hegments?

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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 aqi*y)gu j2c 76d,f j t9iwri6y0ix n et*5tdi. frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed ifu*7 c d0.iy9 *ejwj5i2ti6)xi fnitdrq , yg6t 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 xkt1hry+ js6 8 78zwmka tension of 20 N. What should its length be if its fundamental resonance frequen t7k 81jk+hyw6 xs8rmzcy 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 harmi:c(;r l9zwcu onics of a string of linear mass density 2.00 g/m and lcl;9cu r w:z(iength 0.600 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-m l5 6mgpwal,.5 m is fixed at both ends. When the string vibrates at a frequency of 6w ml ,a5pmlg-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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