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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 /ibi82z94r sokp6f z 1s c3afjql5ey0a 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 proce/vo vs: webfnj b//)5lss, the number of 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 maximum displacement from the equilibrium point is c/9- ccbc,8r-ks cov4q no2qlmalled cqbsko,von m l r9qcc-/c-42 8the

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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 thrchbk,1w 5ncelq uzpm i0+0+/e mass is at its maximum displacement from eq 0enp+ kc1l+ cr hb/uwqz,0im5uilibrium, its instantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass passes through the equilbvtm 9v/vbm,+ a:w +n3-g(hg -keyshp ibrium posighhv g,9vy s3 mn/( -p:k+ebv-b+twm ation, 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 undergoes SHM. When the mass is at maximum displacement fr:awp;po0 9svgs :z;uxhv j ;o3om equilibrium, its instantaneous accelejszuh w3 v9vo0:ag po ;s;;:xpration

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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 fplt/7iak oe ggb r-g,-7w p78bobs up and down between points A and B. Where is the mass located when its kinetic energy ipr kf-b /8wp7-ltg77oeiga,g s 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 sprf,p l lw/ u-pxclb*3(ping and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a maximum?f (u3llp/xlw ,bcp- p*

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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 di8+ka :* zwkrhcy ,0jand bobs up and down between points A and B. Where is the mass located when its potential energy is a mizdk8+,r : 0hwcjiak *ynimum?

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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 b* pl(/+v vcoqtobs up and down between points A and B. Where is the mass loca(qp +vv/*olct ted 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-spri, :*kona 5vhfmng system produces what effect on the system'sm5na:v *of,h k 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 vi87mlx : ff8ewmbrating mass-and-spring system produces what effec7 lw8e:f8xmm ft 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 constant of a vibrating mass-and- .3-o5rc r pisugudf85spring system produces what effect on the s-grsr8u. p53du cofi 5ystem'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 sprih2s4zq: qjgusl;q/ x .ng, both on Earth and on the Moon. Where is th z2jglqh.sq;q:us/ 4x e 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-a8whad 9u r;0i5dk-ajqno d*u/nd-spring system causes what kind of change in the resonant frequency of the system? (Assume no change in the system's mass hra/dk;qdj*wd9u a0i5u-n8om.)

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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-sprinf(3 aby 2(gkq0saf1i eg system causes what kind of change in the resonant frequency of the system? (Assume no g(af02 (bksae3y 1fi qchange 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-spring system causes what3h4v)9g5 azwm9 m lrbr kind of change in the resr9bl zrmav59h)w3 4m gonant 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 lengt4( *mxc z bsw0qg5,gyuh L. For this system, when underg 5gbwsyxz0cm g(q,*4 uoing 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 fo+p l2ye k/qppa7z52gpr one complete vibra7qyp2+p2zp5lp/ ak eg tion

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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. Pend -7pb skks1a*ii8t4zg* s2ipfulum A is twice as heavy as pendulum Bs is-4z*f7kpg2batki18s*i p . What is the period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pendulum is tripled, the time for one complete vibrw /xylq zo,88qation 8/qq8ly ox,zw 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 penduurq zzw+ud i. guo*t x76rd9g2.6,tjqlum's frequency if both its length and mass are increatxiug 6 qz t*d+u9 .g,6.27u wqjrdzorsed?

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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 a3je8cj1.* sqj bwl-qrl-equgm-v.l(l 8iw3 nt twice the frequency of simple pendulum B. Which statement is cor--q .ej- jg3m s3qlnuwel8wvrcil* .jl( q1b8rect?

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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 pendu/k6g43ldc 8ek zwv4jhlum to the Moon, where the acceleration of gravity is less than on Earth, the resonant frequency owzvc/lj644k kg3eh d8 f 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. 11-141,yrx6ar kwt.ju 6cn represents


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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 representv3ox 0ft pbudtvl0 r56+d/nq ,s


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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 represe5o r+sp3xr -l;u6(aqk ihnk9 onts


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, thgc 8(u3a9ez yyulbb) ,e amplitude of vibration is found to depend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of points ofpv l.0 h+xxem.ity t-0 the wave from equilibrium is called the wa.pm0 -lh0 ite.y+x xvtve'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 the wave'sg96 oxy 5wm4r*9cbwrfvv *;r v

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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 itf, ;j0 ny+0uyuxzcy/s called the wave' zy0nxfc +u,t0/yyu;j s

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequen j-gwb5 8uc6 dxq.w:ojjxh .c.cy times the wavelength is the wave's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave increases. n-ob ehb9)th0 What happens to the distance between successive crests if the speed remains cotbhn h)bo 0-9enstant?

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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 :1y9nmec (a nmon the same string has wavelength 2l and travels with the same velocity. What is themy (9ne c:m1an 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 length L, mass M, an0eu4plmk. fyt (. )o ca(ono8ed tension T. A standing wave is.lcy a8 etmou(eo4k) 0(n.opf set 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 tenzi)rc 9z0:dl ysion T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the mass of the string i:)d0 yrz z9cils 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 ,zf-y .wb0xxk b34z/jp;ft i yf 6kv(nL is under tension T. The speed of a wave in the stringbxkzyjfvw.;z/tn 0bx f f4k-y ,i3 6(p is v. 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. The speed of a wave in tl phl.fyam3m d+:v.xln i7.o.he string is v. What will be the speed of a wave in the string if the tdo hl7: lmaxfm +v..3lipy. n.ension 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 its5q d 1hoqrpirvj,u.1v)8 7t s a transverse wave. As an S wave travels through the Earth, the relative motion between the S8d 5.qs) q1 j7prvhro1ttuiv, 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 -(smxuzp o /:-8q9 j smzt:prwwd*u4owave travels through the Earth, the relative motion between the P wau4dwz:-owm m pjs:pt-/ s8(qz9* xoru ve 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 wave i;wpk dd 9yz:0becpri*71m;rd s

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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 reacheoq wk94k-y stg.aqc2xe0* l 0ps a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and qag.oxk2l kw-00ep 9*ys ct4q 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/as 0nr 2km8gykx n1v0 on a string, one is traveling toward the right and the other toward the left. At 2sxrnka80vkm10ng y/ the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. The one traveling tow-aqq6/3 p xgpxard the 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 xg-aq6/ p3 xqpregion 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, occurr:,g 0+ctttyvo +xnq pvl;*c51gmt )is 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 tensio tfj(:n0:s vxsn in a violin string, the fundamental frequency of that string will increase by a factoj:sft(nxv0s: r 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 spr q4 5e2fh(pmfding that stretches 2.00 cm when a mass of 0.600 kg is suspended from im 4f5qe2(fpd ht?

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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 springlx ;r;;r-g oib constant 60 N/m along a horizontal, frictionless surface. The sprl-bor;ig; ; xring 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 of spring constant 60 N/m along a horizontal,yro c0s) 0(uee frictionless surface. eoscu (r0 ye)0The 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 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 6 vac.j(w: ctmconstant 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 oscillatingjv(. 6 ctwam:c. 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 undery hl)f9glk5c* du4 -fmgoes SHM. It goes through 10 complete oscillations in 5.0 s. What5)m yflu*hf4-d c k9gl 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 and forth fromtb.cfne rm -4. 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 marm.4 fc.nbt- ess 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 to4 dqrfgy 4k8 8(jvi4cs 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 equilibriid(rkgsj4 8y8fc v4q4 um 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 energy is 8.0z(*u6rtnch 6 o J at this time. The mas n*orczht66 u(s is cut 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 attachedivpijae 99:;w 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 eq: wie;ip99 vajuilibrium 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 constjh4nyh9 66z w8sms5cia0l j; lant 20 N/m along a horizontahh496l8ncys 0 6wzjja5lmsi;l, 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 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 thetwe)jc 7 q8hf* end of a horizontal spring of spring constant 50 N/m and set into hjwf8t7qc e *)simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energy of this system?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of a horizontal spring of spring constant( a*zm0y5w;h d4pu 7fno 43iwkdnpds* 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical energ54 fu*yd(74s0hpwdw z koma nnpdi *3;y 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 sprine 9l:b3 lon-cfoav3 -pg of spring constant 20.0 N/m with an amplitude of 0.250 m. 9cpoo3fn3-vb a le:l- 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 displaced 10 cmyne j(s:otz.0)9mua3 y4bc8qh k5rcy from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then releuy4mj5h (s 9oqkyenzyc.8t3:r)b ca 0 ased?

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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 fzmhz9g 8x73f object is dispfxg 8mzzf37 9hlaced 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. Theirul fk,lv 7zbq9h;+7 object is displacedlkvr7,qhl zub+;7i9f 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 coq./; gq/ nondbnstant 18 N/m, displaced slightly from its equilibrium position, ann dqb oq//ng.;d 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. ));7i2 xafec ae2 tkt -9d:up qkqq*fhIt oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and releas7-k*etafqf up 29)) 2e h qxcqtik:da;ed. 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 ajm2ztf 1- rvtt1o1qx(h)g b i/mplitude of 8.0 cm at a tg )xbvrfjt1 im tz(ho/1 1-2qfrequency 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 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 stretches thxsn s34bput1( oly/a: e spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from restbn3as:/ otul ypxs(41. 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 the2 98.ku2e+*ukdei gy e5hoarj9 eo eu. 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 sy 8 jeei5k.kgoa2u9*2 de+ uueyo9re .hstem.

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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 f3u:,oxrn rurl7. p v7spring. 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 released from rest. Write down its eqx 3unrf7u7l, pr :or.vuation 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 obeoomk:d1 nbem0 j78i2nin 7uo5ys the following position versus time equatk o j017iinbn7u5dm 28n:eoomion:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the amplitude of vibration?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the folld; vgg;yzn 8y *8dcqe;owing position versus time equatiog 8dnzyevgqy;8c;;d * n:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 m756iz ew0ugc hm wn8qv 4-g+uversus time equati5w8 4cu-gm6nim7 hqwvgz+0ue on:
$y = 0.50 \; \sin (\pi/2 \times t)$. 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 7rf- no lvf 7sua*v-yw:* 4)fmv-zq isfree end of a spring executes simple harmonic motion according to the equq s vm4as*-vf iowy rv7-n *-7f)ful:zation $y = 0.50 \; \sin (18\pi \times t)$ 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 t-52: dw/bi1r cqcq;e gbd8hd mo 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 cmei:whrb-bc;dm/d2q c815dg q.)
(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 co b )+zp1lygh+vmplete swings in 8.0 s. (a) What are its frequency and period on Ezvp+ yb)+hg1larth?

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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 per:. u4k:d60yvsf yeejaiod 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 0 6 f9zm,ehjb(jzw+mmof 2.0 s on Earth. What is its length?

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather clock is 1.0 m long. What is its period wfti,y2-8 7iep f*cvv on the Ea t-,c7fiy8wv*vfp ie2rth?

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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 1r(qopkibm/ghh6( q4 9.0 m long. What is its period on the Moon where the acceleration du( 94qrbgqpo/ ihm6 kh(e 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- z(o;q p,fe1vo5wg:efkg spherical mass attached to a massless string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.50-kg mass (same diameter sphere) had been att ,5of f ge;v:o1(ewqpzached 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 2*.n o djv:3srkiz5 palr;y4fa 20-g mass has initial angular displacement of 8.0e. It o;v4*pj3f.2 kna5 dy: zroilsrscillates 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 th)1oc+.iy i etivtv34qg/s;ak e wave is 120 Hz. Wh;ok/.4vgc)3e sv tqyaiiti1 +at 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 frequhf +/:5qldsy)suwx neg l.p+ ;ency of the wave iu g+l /5.dsp+yxw;snqefh:) l s 120 Hz. What is the wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave6ygjxb*7 j4 ir:*ode vi8(mt z at a given time. The frequency of the wave is 120 Hz. Whaye:v o4b(xtij 6z8* rijdg 7*mt 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 we97xd m- fd7 w9xflfx-c. 9lmlave 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 w:f:7 oz6 g.,upiaanki d91ze 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 wavelenge.wv w3g (i.emvgv 41kth of 3.0 w ewgvk me(.iv413vg. 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 thatrbtm8/fv*n k uc+- q4v has a wavelength of 3.0 m and a frequency of 12 8 crb/vk +t4*nqmu -fvHz?

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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 traveyy d 1bi 0ccdu-i vf, do2t(hfd,2z2r9ling 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 u5jey/8 ;oln9m6kz)m0wr7g d)xski bvnder a tension of 1350 N. What isrd6km yls 0we5 n;o)m8ivgjkb 9)x7/z 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;ee4 b3xcais under a tension of 180 N. What is the velocity of propagation ocae 3i;xesb.4 f 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 wire whose totm.iqhtgh88x; f; hvy dv,97bwah8h mwy8 bqxh7,tf ;v;vd9gi. l 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 wave on a 2.0-m+oif/4 ao hrcw0vtb:dz.u.: p long string fixed at both ends is 200 m/s. Which one of the following is not a resr:fh t.+vzicdp0o a :/ wbo.4uonant 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 hasr 2a+vhq8m jvrya8 j7( a fundamental frequency of 500 Hz, which one of the following28q+(yv r8hajr v mj7a frequencies can set 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 four equal segments inxwi* p1 un8h4o a standing wave driven at a frequency of 480 Hw 4uhn i*1po8xz. 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 both ends, vibrates at a frequency of 1m d,bea3 8hng1 w:+ )lhhp)bkl2 Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wa3) 1wh )hhml l:gbakb,n p+8deve 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 a tension ofn1s1yg2nuvbee/ iw32 qvt -t; 20 N. What should its length be if its fundamental resonance frequency is 2vn;vqe2 y1/i -utt ne3wbs1g 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 mass density 2.00 g/m :s4ys2y3fgupand length 0.600 m when i:2p4gusyf y3 st 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 2.5 m is fixed at both ends. When the string vibratb u7k)c3mihz ks6*gf-eu7. ybes at a frequency of 85 Hz, a standing wave with five loops is formmi. bh6z7 us3 )*bkyk-gu ecf7ed.
(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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