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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 process vj ; tr;z5,9ypny;hexj .j2knis 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 cycles27ds55i xv mhw 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 maximum displacement from the k9e5p) mt,:y)b(8otyrm jgtaequilibrium point is ca (8my) t,mk5jt:gebo yat)9rplled 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 maul x.h )5yq hre(0pp5c p,qfc9ss is at its maximum displacement from equilibrium, its instantay9)5 e0f(5qqhph.lr pc,ux cp neous 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 equilibriumzhi+yt1c4i-:bx q y6v position, its instant-bcizy: y+ t41i6vh xqaneous 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 is at maximum displacemey/nxdn0(s9nx b2r l(-ll zr7unt from equilibrium, its instantaneous accelel(l9xysd/(l b-n u 0nznrr2x7ration

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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 (ha tc2oa/g /ndown between points A and B. Where is the mass locatag(ohn/ta 2 /ced 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 ahwudb 4w8 tju2ivnr h+b+j22 :nd down between points A and B. Where is the mass located when bwtwrhh:ubu+j+d n v8224j2i 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 vertiw6c y(h60ktc jcal spring and bobs up and down between points A and B. Where is the mascc(jthkw 06 6ys 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 vertical spring and bobs up and down betwek1/lszpzj10 vuxyv v.dd z 0g.:g)zb 2en points A and B. Where is the mass located when its potentil 0:.zbpsd vd.v 1 2gzzv1xuy)0z/k jgal 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 qb ,:w0vzhqm no6l oj. m(7jx/system produces what effect on them .qw:jmv (6oxlhz,j nb/q 07o 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 system produces what hkmu0 hya--9 jq ;mv0mu:b(yi0a z yz3effect on the system's mechanicala;a- uq k- mh0 0vhz:zi0myy b3u9jm(y energy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring constant of a vibrating mass-a 64cvz wdl:w(kz8h0f ok tl/r;k q9aedsd845g nd-spring system produces wh f5ce;d8ka9lwz0wq4lk gv6 4 z/r(os8kd h :tdat 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 Earth and on the Moon. tp)ds4,3v6a pr /tmngzt+ t;oWhere n , t)gt4sartovz+;6ptmd3p /is the period the greatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k of a mass-ah,njz j(yljnn2f lli 7)38is-nd-spring system causes what kind of change in the resonant frequency of the system? (A,(zlsy iij78nlln h-23)jfn jssume 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 mk7vi .- ym4a8n m;-+b vcekdk 1kus9gxass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's spri 4d; m.-kmuvkc+-eky x7 g 8in1kbvas9ng 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-spring system causnd ojrf3 4(n;q pr44gk/h 9vepes what kind of change in the resonrhen4kf nr4g pvj4qp 3d(; 9/oant 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 ma 2jo tlqf17ca6ss M attached to a weightless string of length L. For this system, when acq6 217ftolj 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 requidckp.fk)s4n6n 3d 9 pured for one complete vibr npcufdp4sd) 36kk.9n ation

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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 akz;od, ux1a;m oo70uk re 3.0 m long. The period of A is T. Pendulum A is twice as heavy as pendulum B. What is the period a1z oo7omxd;,ku; u0kof 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 t.*n fmhkn0j6 vibration increases by a factor of0n .6j *tkhnfm

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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 3v+y3b e t*qakh9; ez byez m4bqgy,.0both its length and mass are increasee9 *hy,;. 4mvag+ tb3yqe0zkybqe zb3d?

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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 adi7f lt gr ikxv5 .v)q8./6plond forth at twice the frequency of simple pendulum B. Which statement isogv/65.p)tqlf8 i ik7 .lrvxd 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 accx iklrn m5cp-n5g8s- *:4tstzeleration of gravity is less than on Earth, the kp- r:nz-*lt xni85g4 sts 5mcresonant 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 repsjq7b-5z q)r*o7olkhu g 3s ;suhd 6/gresents


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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 repmg ;e9hu 5cmh.resents


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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-f ((+ibnibnr q/ pn 0,cl5dxiu2(e ymepresents


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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 to depeer/m6 o9rlrg42 1kpqc nd 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 equilibriumc ny56l/qsus 2 is called the wave'n 5csyu6s/ql2 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 cre/w.40wg tlr;8is(k csrqwr .psts on 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 a wave passing a point per unit time is called the wa:8) nkxojr 4jeve'sexrok8j:) nj 4

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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 waveleng((t k9z9cbnudth 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 happepow6ed( 3b 0s+i8j+e ,*cywpvo q:cl ins to the distance between successive crests if the s36+c jbc(y:, qdeo+ pl*w0ie wvsio8 ppeed 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 wavelengjtj3 f, ve *w*y(,e t,w,spawith l and frequency f. A second wave on the same string has wavelength 2l and awee,(wtfyjswvi,* ,, pj*t3 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 wave on a string of lengtg +dykp;t m5+dxlci* 6h L, mass M, and tension T. A standing wave is set up. Which of the followi6yl+xmpc* dtg ;k 5id+ng 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 wj4pzm8m1gf.ncr1:og.d jl s8ave in the strizl8mmf1.r d4o.gn gc 1j8spj:ng is v. 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 and length L is under tension T. The speed of a wave in*pu *0udqs;oyotm8-ho8 gr48hbl k 7v6 gui1 c the string is v. What will be the speed of a wave in the orp;y4uk u *8hu0 g o8cdsl 18qm*ob7-t gvh6istring 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 tensi ny bx0afjppcaxie.8* k./l:2on T. The speed of a wave in the strin/ x layjfa :pb.kc.n0p*8i e2xg is v. 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. As an S wave travels x1;*tzon3ks mthrough the Earth, the relative motion between the S woxm3;n1s tk z*ave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudinal wave. As a P+ q48+i :rsdgv1gg/ffn3cb38 x pphuy wave travels through the Earth, the relative motion between the P wave and the hqsxg884y n3i/ cggd r1bu3 :vfpf++p 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 wavepa jv((4x1ucqmk2z79fu w2u:i/a zi;tw zg+g 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 right16. u7 rymk-,joruquy along a thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmitteruq17k yyuo,jrm6 u -.d 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 amplit;/ebn0 bvq(o4sav nr:udes pass each other on a string, one is traveling toward the right and the other toward the left. At the poin b0:ovvbn/na r(sqe;4 t 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 54cz,ooc4xkitp ,bz 0il;jou0 :7 uwn right has a positive amplitude, while 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 s 0nz7obpo t4kiw,c5jo uzil;c0,u:x4ame 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,;6 8x;baijf9xz a9pwg 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 vg:q/ z2mgx u3db *+zqbiolin string, the fundamental frequency of that string 2z ggzb xumb q*q/3:+dwill 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 when a mal(b*uio/jp8sm4 /p );/k; d nbngpoix ss of 0.600 g(/; )lb/iuos4o8n p/i k pd*n;x jbpmkg is suspended 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 6k 7om) lrap z(ugucnk3 vy)7*90 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(7* zpu9nvl) r3aokymk c7gu) 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/q (a:e6mcl1b hm 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 el ab1cmhq6 (: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 mjnnnn k2f3(. 85ote;hcd;b qof spring constant 60 N/m along a horizontal, frictionless m5hbn3o;kt(jd8nq;2e cfn. n 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 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 uf dgxj xl6634goes through 10 complete oscillations in 5.0 s. What is the period? f66x gx3ud4jl

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an idw wss7y o81qs/eal spring of spring constant 20ss7w8y w1qos/ N/m with an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20q6tv*iumwj,2k+b a i *-dsh6.ku jt/a N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/ad,*m+ *6u tv 2iw b ajtkukqij/h.-6ss 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 wlb8: ,t vd+at5nms/ gpith amplitude 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 mota8:mtb +v ltsg/p5dn ,ion 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 ojj2n-bu ir/lis0(5fa 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 tsn0rlj u25 if(- j/boihe 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 aanp;toqb (o5v/a4x4h5i y0p jz.tto- spring of spring constant 20 N/m along a horizontal, frictionless surface. The objet/t5b4p4yoh5ox ti(aj;0 aopnq -. v zct 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 attached to the end of a horizontal spring of spri q0bb2 :7npajfyglluc-007pgng constant 50 N/m and set into simple harmonic motion with an0l c2nabg0u:jy7-lgb0pq7f p 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 oftjvq4c**au9 ;3y*v + fwecgyk spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 yvu qt9* gwj*aecfv3k+;y4*c 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 a c21vs qmef6eeg dkug1:0l:s2 nd forth from the free end of an ideal spring of spring constant 20.0 N/m wi egslqse1f:k:v6 20 1ucgmed2th an amplitude of 0.250 m. What is the maximum kinetic energy of this vibrating mass?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of a mass-and-spring system is displa:un/w zfywft fex0 f32 93y1gkced 10 cm from its equilibrium position and released. A fr0gyff2 /uf:3 ekt3xzwy f nw91equency 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 sp1 ( t jsag1buo5pamh2(ring constant 10 N/m. The object is displa m( 25b11gpjuaah o(stced by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/m. The gtr: cjhjoy/do9+7 17xsd4 sl object is displac:1jo7dh4osr7ct js9d/gyl +xed 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, dis- jleai8:1sugjv)w 5tplaced slightly from its equilibrium position, and released. What is the frequency of 51g : vtejsu-l a8wji)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. e, qab /ed(o.(1szww wIt oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum vel,wd1eobw(w. (aqs z e/ocity 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 rzpn 9)/q66gnfo;tgm with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 c 6z6 qg;nf9omtp) /gnrm 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 suspenri fr005q5osd bm;9g 3vhf*pnded on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released3;5bsdrhnmgi 9r ff0q*o v0 p5 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 stretches the s -:2*y/rkp:k npbtvr gpring 2.0 cm downward. The mass is then pp r-kp2ny vgb:k: /*rtulled an 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 sp vx -v7e3 3c5po5 a:jpq6phu7rvmr3a dring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additijp57rparo:vdap5-36v7 um q3h xv3 ce onal 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 positionvqw o hg,r/8u+ versus time equation:hgo+urq8w , v/
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 /zy0 9r01ewkxy dgip)the following position versus time equation1 k ipyrg9y/ zxwe)d00:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 harmoni : ): rqthg6fe)mk0byvc motion obeys the following position versus time equafqmb0 hyv::)rt )e 6gktion:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 si65u p+h6loyqi mple harmonic motion according to the eq5+q6iy6o up lhuation $y = 0.50 \; \sin (18\pi \times t)$ 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 attach7rdr1.dl2rl8 az+m fv ed to spring with a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the spring is stretched by 10.00 l28 fad v.md7+r1zrrlcm.)
(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.kn5 )bk*(8dpjmlg5 i l0 s. (a) What are its frequency and period on Earth*)m8dbl k5lij5 (pnkg?

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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 its period on z5swlb7 */.x n iv7czvxuhg u*9( .yfvEarth?

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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 2.0w6l)bt0e3vc j 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 igr8. (ubiul7l+n8r )4 sz ;nosieme4 on the Eart lg srrz8si4l4 )u8+ibn(e7mni u.e ;oh?

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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 is its period on theq;j+ fm /cyf+k yvg/(**brz kv bipe-. Moon where the acceleration df;bv*rmfj/k /cvyp-eiyb z(.+g k*+q ue 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 to a maw-:4b;tojmpa abzq4msh .l; 8ssless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and bsb4a p.m;q - z;4aw ohmt:l8jforth 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 y6u/ *ooz2 on6ek4tfpmass has initial angular displacement of 8.0e. I/u*6 k6oyo z4nf2to ept 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 frequency of the wkbkj(iq- dk; zo. *5jqave is 120 Hzi jjk(5qd qko*b;z-. k. 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 1wp 1 rcp 6a ft1xmx5*/cqezd(time. The frequency of the wave is 120 Hz. W (16c/ r1mcedzpqx*5tfax 1wphat 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"xrkh;qbj(woe)w ;c; - of a wave at a given time. The frequency of the wave is 120 Hz. What is the wave speedw()kcj;eh wbq;-o ;xr ?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a wave which has a period of 6.00*-- k2klujz(t9z n;6g hhx wm7n*t ujcjzg;9a 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 w.w-xv,hf j-y-0s ) bix+ lztuoith 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 1u:s;;h1lho6 f):w(varqa xdp2 Hz and a wavelength of 3.0 m ;fp :hvqw;r1x:) (sl dahauo6?

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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 an 94 ga9wq5ux mbv4uu+zd a frequency of b+ umw4z gxu5auvq949 12 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 wc x(e,f*uu9zj17cnxx8 bzmll6y6 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 linearq vo(ldq0tlajm l7.*mw3m 9q5 mass density 0.0050 kg/m is under a tension of 1350 N. What is the waveq(3l0jd7mwml* ao 9qlq t5 mv. 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 tensi 5yv tq/b1 ur(mek+(vpon of 180 N. What is the velocm+1tv5k/( vypbqur (eity 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 m lo:wp8wqs-qbx*xm 5 xd1 ng wire whose total mass is5qsxxw1qwxm *p-: db8
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 au;qq4.dz7cl1hc-w9b w3 qyh b transverse wave on a 2.0-m long string fixed at both ends is 20.h lyqzb9qc74uc31 h;wdq-w b 0 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 fundamentavo8km jz-a.tvsm6 zjq8, *a.d l frequency of 500 Hz, which one of the following frequencies can set the str zvsjo.z* 8. 6qd m-,ta8kavjming 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 obser1nz9r-jm h0e)l s;wy pved to have 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 segm) 0lwp1;nmhsj -z9yreents?

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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 2j5xf0bitzc., vibrates at 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 lficx 5 tjz2.0boops?

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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 tensiokr5l xl0qy*vdw5 pmu6 xxbpd 74)v0;xn of 20 N. What should its length be if its fundamental resonance frequency il5p7 lxd6;)pxx vr y wdm4*0uqvkxb50s 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 m4a 7u(o dims4lass density 2.00 g/m and length 0.600 m when it is subjec7mlo d(i4 sua4ted 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 g/t7ja5 v y0kn5o msz5fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standing wave with aom70 y5/5 kvzjgtns5 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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