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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: 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 periodica c//mkn6i0g c 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 unit time is cg6w,j 9ur( jjqalled 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 from t(fxn9p )kneatu zwq;6l;/.rc he equilibrium point is call e q( pz;a/c) w9x;nnfrl6kt.ued 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 SHM. When the m,jmwa )m r-jx5ass is at its maximum displacement frm5- rjaxw)j m,om 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 throug: swz-glbf8j8 h the equilibrium :jgw8-8zflsb position, 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 undergortt6)a3x5 n(qev2k q 1tnf eu*m:p- 9yp3irwhes SHM. When the mass is at maximum displacement from equilibrium, its instantaneou qpv*(qareup)my-3f6kt nh w:r5t e2txi n913s 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 sgvjb 0a*0qzk3e6hl*uz*v0j jw v yy-vf (f-1 vpring and bobs up and down between points A and B. Whe0j wzeyh*v a*3q(vzg-0jfv v-* fkjlby v 610ure 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 upuxcev a7vu7/nmgddq;, eu 6r/z+0 a r7j .9xet and down between points A and B. Where is the mass located whenumcau a970 7ue/ n7d qv+.rg6vte;rxjz,d e/x 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+0-- jtoh6gsx fwo,fb A and B. Where is the mass located when its potential energy i jwgh,t-xo s+f0 6-fobs 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 between poin. nwwd;fl o*6 cp +ub)kf)haq(ts A and B. Where is the mass located when its potenlw+ )w) bn fkao;f(hu.d*qpc6tial 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 am8 bodu,6bp9u pplitude of a vibrating mass-and-spring system produces what effect on the system's mechanical energu8 pub o6pbd9,y?

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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 s2lhiw7lm xl qtd5pjf 15orp080u +9igystem produces what effect on the system's mechji215p f0wmlh 8u +oill7 xdp 5tr09gqanical 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 constamn cbda (w7 h q.6ff871pdixv*nt of a vibrating mass-and-spring system produces whh adv(fn1 qc*8d6pif7 .wxb m7at 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 a spring, both on Earpj3o0i z ol44zth and on the Moon. Where is the 4l z34zopj0ioperiod 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 causuxxlvz2 j3( .wes what kind of change in the resonant freq j.(v l3wuzxx2uency of the system? (Assume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-and-spring system ca(3vexn wcmwc: ,m-n6c uses what kind of change in the resonant frequency of the system? (Assume no change in the system's spring constant k.v3m-m6c w nn,:wx(cec)

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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 of chang(z k90nbr8 kn(v+-kmb6lw hfle in the resonant frequency of the system? (Assume no other changes in the sys-l6n+(l zmfwh kn (0vkkrb89btem.)

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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 s3oc9pd,u 4g26 k mrszvf0a d)-nv.nvk tring of length L. For tha fskvd2-vkn0g.ou6d pvn4,m)cr 9z 3is 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 o* ngs)su ghub2vd, -a(ne complete vibrat,*suga hgn(uvb-2) ds ion

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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 is67ur; wh ne*f)pk 1wus0 tksz* twice as heavy as pendulum B. What is the period fswwp7 u ekk 0s;16nhzr**ut)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 complete vi 7ddxh0:ivb9ql5 c4t hbration increases by a factor h 9:07ql45v dxbidht cof

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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 freq0spfb:b: m 5knuency if both its length and mass are increanfp:0bm bk5 s:sed?

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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 twfyul ):eisf l, /jv-u0ice the frequency of simple pendulum B. Which st jf yfullus-0:e/v)i,atement is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the acceleratioxxv9iuby;.7 k,x5 m gbn of gravity is less than on Earth, the resonant frequency of the pendulum w ;9 ,g5xxbv.m7yix kbuill

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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 rep5y v)3l hp7kqnresents


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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 rep)d r*b apsf**txs(ol ho9 9pm6resents


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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 r:eke1 uoaeg4) q(wsr4epresents


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 pk vzg0m-g43l-md q uvq 1ja73of 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 disp , odammjsb2v6dtk.(dz86.poxo/ / solacement of points of the wave from equilibrium is calledmp z os8sd,/( 2o. ba6vdkj/.t dxo6om 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 y6 -pk*r2mr lgthe wave's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wave passing a point per unit time is called thekd3 5*3zv9viu5 zu-bm+x,och;ebhzy wave's5z ;k 3um i d y5h-v3,bov+uzxczhb*e9

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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 wave'k*w8r*p x mx cg;tf;1es

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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 dinvi+/p t 105qqyayaf0lx0vh) stance between successive crests if the speed remains cytql0 f+5a/1 0xavv 0qy)hinponstant?

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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 w2hvzj3 *s fnniw+68k-na: jpcave on the same string has wav36zscp jfa*- vnhkji+2nn:w8elength 2l and travels 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 w0)rf: h3n ibi9 c/mdizave on a string of length L, mass M, and tension T. A standing wave is setd9bc )hmzr0/in f:i3i up. Which of the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tensi)j+5imdl sit, on T. The speed of a wave in the string is v. What will ti), m 5j+ldsibe 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 ten.dq +01cj oouasion T. The speed of a wave in the string is v. Wha d1.cu0 qoaoj+t 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. T0y bt/n:1nh*n hj oc*kf35rj 01ndlkdhe speed of a wave in the string is jn5 /djdn0 f:nc l1*1kh3nhtk0o ry* bv. What will be the speed of a wave in the string if the tension is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave is a transverse wave. A :;bt:nkf;zka s an S wave travels through the Earth, the relatintaz;:kf : kb;ve motion between the S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudinal wave. As a P wave travel 8s2orfo v+zr)orcu*,s through the Eartrso ro)r2zo, +*cf v8uh, the 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 wavehez1f/fei(k2q gdw eg;z o0 13 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 cora+8ei 97ujv0 y+nnav kd reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation o7+e 9v0 u k8inv+jaaynf 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 po +vph8 2f8rw*9hw bfussitive amplitudes pass each other on a string, one is traveling toward the right awfs8wr 928 bhpuhv f+*nd the other toward the left. At the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on, ko*w. vvvk. 1k(ufsek+5gss9)-vcozwaqu 6 a string. The one traveling toward the right has a positive amplitude, while the one traveling toward the left.vv s 6kvk , uo1(s+9 auc5)fkksv oz.we-*gwq 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, occurs wheb11-.nj m( yfimnpw 31pc6lxhn

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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 c,+elrxnqvm-8 )4jf8if- i a fviolin string, the fundamental frequency of that - 8c+r qil) nfi4fvjam-8fe, xstring will 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 constant of a spring that stretches 2.00 cm whena/4 mxge( 5b:/b e1tbsnmx r4p a mass of 0.600 kg is suspendebs// : 5(a4xmr betmxneg1pb4d from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 6b wrd6 o37vfe70 N/m along a horizontal, frictioo7 6vb3e 7frdwnless 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 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 -as.i fynj4j1yl/o d* of spring 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 th. y d*-jjyanif4s1 l/oe 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 hori3013shm- jp bukvyd 8xzontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. Is1y 3p3-djbuxhm8v0 k t 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 gj+sfs of/rm2n hq *p-5oes through 10 complete oscillations in 5.0 sjos+pm h-/n s5frq*f2. What is the period?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back ands4jzedmv v yq6a/9-(o forth from the free end of an ideal spring of spring constant 20 N/m with am4sa6y zqd -voj e/v(9n 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 sz;f b ysl3vvx/g0y)q4 pring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmosb yg)x3f0/4q;vvzy lnic 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 amplijcgy *8df3xg non 5))wtude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is again set in motion with amplitude 4.0 cm. What)djcnf n)*yow8 g 5x3g 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 +* tx f;;iftcoc mq2m9n;3gpf 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 the ampn+fp*2t9mixgot ; ffm ;qc;3clitude 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 along a horief ti5ycv- j2 m:/,s.ei;lzspzontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equef:pvi5 s e;stj-.y ,2l/m cziilibrium position. At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of spt3 cqiowx 80p;ring constant 50 N/m and set into simple harmonic motion with an amplitude of xp3w tio 0;8qc0.10 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 horizontac4fqayw.w*1 zb9 /r yll spring of spring constant 50 N/m and set into simple harmonic motion with an amb*.w yw9ya4r cq1/lfzplitude 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 spr9x d nc7 ;d+q8tgcpohef:, +aeing of spring constant 20.0 N/m with an amplitude of 0.250 m. What is the maximum kinetic energy of t7e+c8e+ 9dnh; :dta,cpqgxf ohis 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 p9:j 4*sy kg mrr -v2h4fvqk4;lr4q ghnosition and released. A frequency ov24l*q s4 mf 49-q:rkr yg4vrnhhgk; jf 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 consr8vk r kclp 9yz )v2uc0;0+utwtant 10 N/m. The object is disv+) p0zkuw2 9 u08rr kct;vylcplaced 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 6 kfy1;q 1p3 07wzhfrm k(byrda spring of spring constant 10 N/m. The object is displabrq31 kym1ffz;dyw hk( 6rp7 0ced 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 aeg*yn /g/cye* spring of spring constant 18 N/m, displaced slightly from its equilibrium position, and /*ggye/ c*ynereleased. 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 die((y ox1btz-yxvr7o7 cq2 wibnec641splaced a distance of 2.0 cx(4wnqx6b7o1yr(o2yv1 bcct-z ie e7 m from equilibrium and released. 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 l+m doto o 55l)xo/oe1)vuyz6d 7 vei3with 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 comparmvo7) o6y d tozdu5 v3o)ei l1xloe+5/e 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 sg org. :lo 0s4rd+2vwwpring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an ad0o rwos 2gl+gwdvr. 4:ditional 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 tkh/: t,57z.c rd auxjbhe 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 total energy of the syst/u k.ajb rx7:z,5cthd em.

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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 maswg n v0tg;;tn );yn .ms;rba;ss stretches the spring 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 yrgn;st; w.v;n; mnt0 )a s;gbmotion.

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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;s qbg7; 45szmpev, n-mzxuf1 following position versus time equ15fmzq-4mep u;xg ,; svs7znbation:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 tlln* d/4n2 vsghe following position versus time equati/ vdn *l2ngsl4on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 j(j qbp8rj4so - s60twversus time equatijp6 -qo8jjsrts4(w 0bon:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 hajv uw)l *m1a4tqb g:y+rmonic motion accordin *gy)l:b14 +mwavq tjug to the 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 spring with a force constant of 20.0 N/m oscillates *h;gk4- - .yfyorsk vzon 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-k 4ygvs;zhk-yo f. *r 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) Wr rmxm)1c; i; o0ykp.osqyz2rh s9x9 1hat are its frequency and period on Eah cxz1y y;om1o ks9ir 09m rs)x.;r2pqrth?

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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 ir fwd5h/x6kg34 ui)ewts 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 Eartho 0,mc;g8u8adzbg (tv . 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 f9a*9 y4qxe xfw)z n3im long. What is its period on the Earth9y9f*fq3 x4eaw)zixn?

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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 mncr5 f6 cf9cr2jc1o/f long. What is its period on the Moon where the acceleration due to gravity is only 1r2/cocfrc9 j56ncf f$1.7 \; m/s^2$?

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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 to a masslev 87dh smmm61o cr/lu(orv;)tss string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and fom/ (or8);rtlm vcdmuhv7s o1 6rth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initialuw+clv:2rzo )bxt, v5i t t4n, angular displacement of 8.0e. It oscilw +ttv):ltuz,5x4nic2o,r b v lates 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 waved;l i9vj4 7(omg)*rkxrywv*q at a given time. The frequency of the wave is 120 Hz. Wha4lv rim7;vjwkx* gqd* ro()y9 t 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 xbj2aup zyr,31e0w)t time. The frequency of the wave is 120 Hz. What is the wavelyut x,awjr3) pb20ze1ength?


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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 "snapsh .c a/ -m,p(6fcvj ;q,yxmleydot" of a wave at a given time. The frequency of the wave is 12dl pmcjyy( q.,em6cfv-; xa,/0 Hz. 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 b u;vjrqs7;x4*0 zub ya 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 fr u10vde utuejh-+h)+ yequency 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 frequen7uz63e d efly8cy of 12 Hz and a wavelength of 3.0 m ufde637zey8l?

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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 wa 5z6hn j+kyz*qzi aih:z-/h;*ib xqa, ve that has a wavelength of 3.0 m and a frequency of 12 bihnz zkq - zyi6i*ajx,hh;+/z:q 5a* 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 travjsl c9: 55yd3 x/xqutoeling 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 1350fh9te5q oqkod4jln /*:ju4;u N. What isq4nt uoqjul; 5 jf* hek9o/4d: 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 ofsa42 9qh3se hf1 (thva 180 N. What is the velocitys14aa2tfsqh e( 39hhv of propagation 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 t d c-t/;9wl0a87 x8 jofevocvm long wire whose total mass if7 x8t;at9c 8dc0jo- e/lvwo vs
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 t q+d*wmrguok* lz08/ yransverse 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 frw0q/* zk8dm *gr+oyluequency 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 frd/6i/ (.otnzd n3z;nv1j4cenq yvn: g equency of 500 Hz, which one of the following frequencies can seodytje nq4g 1z/z/c36nnv.nvi; (nd: t the string into resonant vibration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string is observed to have h8lc/ dy3 uz+,x xpg3zfour equal segments in a standing wave driven at a frequency of 480 Hz. What driving freque/ cyhz,38x l+gux pzd3ncy 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 hnifwt /8h-o+b ( aq:fat a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to contain 4 +o(8q-at wff:/h hibnloops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 1.5 g/m is under a tension of 20 N. What shoulkka/c*gesg0 ;q: ah6guw 58n nd its length be eg06a kng:wcu a*;5gsqn k 8/hif its fundamental resonance frequency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string of linear maegoad67q r5uu x80 iyvg r7p0*p2js-mss density 2.00 g/m and length 0.600 m when it is subjec2epj5 d aor um*ux08g0g-vi7qs67 r pyted 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 imhecv t/+/d)n s fixed at both ends. When the string vibrates at a frequency of 85 Hz, a stan/ tc +evhn/md)ding 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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