51fly国际课程 (51fly.win)

 找回密码
 立即注册

手机扫一扫,访问本页面

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


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: 匿名未登录  开始时间: 22年08月06日 21:32  切换到: 整卷模式

标记此题
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 prdmb 2kv h,k:b 22rn83b4 tjttljd9y*qocess is called the

参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, thlb+5tud pt.:oe number of cycles per unit time is called the

参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement +scx8t1zmws7ov;mlq8f u t ufx(lm 5 : 86cs*ofrom the equilibrium point is called th muf 6+ x8ovx8(f q8cw;mzs7stmc:1*lut o5s le

参考答案:    

标记此题
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 thep1f3iazps m ;o.oh--w mass is at its maximum displacement from equo- ;p13m.f ws-hiapzoilibrium, its instantaneous velocity

参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHse2q) d//qcn jM. When the mass passes through the equilibrium position, its q/ nsce)/j qd2instantaneous velocity

参考答案:    

标记此题
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 taku ; i6:*twdphe mass is at maximum displacement from equilibrium, its instantaneous acceleratio*;dpk:u 6a wtin

参考答案:    

标记此题
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 down betwda. c+gjuq:7 b s1hj8neen points A and B. Where is the mass located when its kinetic energy is7g8qj na :jb1c u+hsd. a minimum?

参考答案:    

标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a verticjca0,ql* c 4 ph-nbx-sal spring and bobs up and down between points A and s -ch, jqn0p-l 4xbca*B. Where is the mass located when its kinetic energy is a maximum?

参考答案:    

标记此题
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 gekq/;i9e/k3knp)*by0 lg ts A and B. Where is the mass located whkkesn )ygeqlik3g *0p /;/tb 9en its potential energy is a minimum?

参考答案:    

标记此题
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 csf7o96zm 8wuf n+8d mand bobs up and down between points A and B. Where is the mass located when its po8sumo+7 fwzc8f6nm9dtential energy is a maximum?

参考答案:    

标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the amplitude of a vicyc 0b;l,.s5bs(b pye brating mass-and-spring system produces what effect on the system's,s0e pb 5cl(yy .bsc;b mechanical energy?

参考答案:    

标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vi,2-kflkqwso 7d9 ;tts brating mass-and-spring system produces what effect on the;os wld2fk 9ktq7,-st system's mechanical energy?

参考答案:    

标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring cdoac/ld*o* yd. 5l rf)onstant of a vibrating mass-and-spring system produces what effe*d odoc*/da5y l)rl.f ct on the system's mechanical energy?

参考答案:    

标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass oscillates on the epj(8:. r. y6j obc rdgunw p5bstmn/;-nd of a spring, both on Earth and on the Moon. Where is the period the greatestu-ds: /8p; nwjb5p(r..ng c rtm jboy6?

参考答案:    

标记此题
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-spr, r;5uh3srbmr-diro o)7d o qt9 .,gqying system causes what kind of change in the resonant frequency of the system? (As)myrhqudr3s9 5oir, qro,;o b t-g7.d sume no change in the system's mass m.)

参考答案:    

标记此题
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 causes whatkyhl0u-w2s n* kind of change in the resonant frequency of the system? (As l wy-0khs*nu2sume no change in the system's spring constant k.)

参考答案:    

标记此题
17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude of djt s.4*3 eoxy6rba7ea mass-and-spring system causes what kind of change in the resonant frequency of the system? (Assume no other chanr 3xd4ej6yet.*b 7asoges in the system.)

参考答案:    

标记此题
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?

参考答案:    

标记此题
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 i4b wu*m g2ndu0ln:l. to a weightless string of length L. For this systew*ilg.m0u4 :nnl 2d bum, when undergoing small oscillations

参考答案:    

标记此题
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 r2gy-wa jzy8,g equired for one completgw 8g,-z 2ajyye vibration

参考答案:    

标记此题
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:c 4)t8 hlrrmu period of A is T. Pendulum A is twice as heavy as pendumhulr:c r84) tlum B. What is the period of B?

参考答案:    

标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple9iz2qe09 e/ l0ytcs2t f1jona pendulum is tripled, the time for one complete vibration q ae /9yo f9n1t20z0ie2sjlctincreases by a factor of

参考答案:    

标记此题
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 both its le) yve fxe d4x83i+b4rgv8 xcg*ngth and mass are increadcexbryig*v)e8 g +fx4x84 3 vsed?

参考答案:    

标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swings back a cz*c(cl( fl+xnpn( 2+oa rr7ieo1 hgwer4+n*nd forth at twice the frequency of simple pendulum B. Which statement is correceh on( ++ gc2flel4*rroxpa ((17w *+cicnrz nt?

参考答案:    

标记此题
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 Moonekl , +ag j g.ci(,7ot-jwg5su, where the acceleration of gravity is less than on Eargi+.l-(ajj5us etcw7 ,k ggo,th, the resonant frequency of the pendulum will

参考答案:    

标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 represo.j49eeqw9*w- s c utnents


参考答案:    

标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve B in Fig. 11-1 t2uqcp 4a6ngr 69qpy cf0; ic.h64ba 2htsc9nrepresents


本题所包含的其它图片:

参考答案:    

标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve C in Fig. 11-1 red5sv-wt82zbf1q 6gy q:yyts6presents


本题所包含的其它图片:

参考答案:    

标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibration,.p6 cgm/vzm9 ex+mq )-l wuder un40b* the amplitude of vibration is found to depend on the

参考答案:    

标记此题
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 equilibriuobut:q jl a+;e6v 5r/q :)cx9r s1zazim is called the waves9rj:x zc);laq:e+qvob z rt1/i56au's

参考答案:    

标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between successive crests ng2l,s ;rcx.bon a wave is called the wave's

参考答案:    

标记此题
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 pointsvvu .2h:p8b b per unit time is called the wave'ubb28h vsv.p :s

参考答案:    

标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequency times the waves7to py7w0/mgdrup 32 690sncne of2c length is the wave's

参考答案:    

标记此题
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 pke8;y g7 nvi5 0,vx0xmnsk) gbetween successyn;g)n0p kvg8 i,vex7k x0sm5 ive crests if the speed remains constant?

参考答案:    

标记此题
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 frequ+bn7e.qq s .ukttb8j5ency f. A second wave on the same string has wavelength 2l and +s.btt enb5q.j8q 7kutravels with the same velocity. What is the frequency of the second wave?

参考答案:    

标记此题
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, and 60 av-s-vsh4oxr9 lgktension T. A standing wlso-vx 0v4a-6r s9gkh ave is set up. Which of the following is true?

参考答案:    

标记此题
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 thu 44etk- sk anncvl1,1e string is v. What will be the speed of a wave in the 4 4eutakl- vckn1,1snstring if the mass of the string is increased to 2m, with no change in length?

参考答案:    

标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length c: xpi6ot 5xz n2rc2e.L is under tension T. The speed of a wave in the string is v. What will be the speed of a wr noe.2z5p6x tc:i2xcave in the string if the length is increased to 2L, with no change in mass?

参考答案:    

标记此题
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 speep(7:o5jfin gzeuf+ m/ d of a wave in the string is v. What will be the speed of a wave in the string if the tensiogj+p7/o fm n5fz ei:(un is increased to 2T?

参考答案:    

标记此题
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 41arpba3x wc. n1ra; fhk,)qs an S wave travels through the Earth, the relative motion between the S waveap1rx4nh; ,f3q1.brkswac) a and the particles is

参考答案:    

标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudina9 ap-rhymm54: nafd7w l wave. As a P wave travels through the Earth, the relative motion between the P y4apa h nr-dm m975f:wwave and the particles is

参考答案:    

标记此题
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a wad9e v/uy; 1wakia4pb7cp708fqxz-d bve is

参考答案:    

标记此题
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 reaches ytj2b - d +ug4h. :qt*cevo;nca discontinuity where the rope becomes thicker and heavier. qu tge2v;*o t+bj4 n :cy-hdc.What is the orientation of the reflected and transmitted pulses?

参考答案:    

标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal72d0mnu uv(ww2u( 1 xnm76tqb;rucqt positive amplitudes pass each other on a string, one is traveling toward the right and t 2ruw1vdctu7; w nu2qx0tm6(b7q nm u(he other toward the left. At the point that they occupy the same region of space at the same time

参考答案:    

标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass 2q quk ;m.d-i/l-fzpq each other on a string. The one traveling toward 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 region of space at-fup;qd m2 lqik-./zq the same time

参考答案:    

标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a system, suezi6ey6s w h.i 1p6.mypna,k7ch as a string fixed at both ends, occurs when

参考答案:    

标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the uwjaw61lp6e*x2g,mfh v,7 n ffundamental frequency of that string will increa nhmfp*6f,,x2 w1e jlu 6g7wvase by a factor of

参考答案:    

标记此题
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 when6 htc2z/xai j9b2hhtmjf*6.c a mass of 0.600 kg is 2*.b ht6chai 6hjx9zmc tf2/jsuspended from it?

参考答案:    

标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m 92gl*9 n8rn-f;j e-t l(lp;ffaodlmyalong a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let*pyl98(m-; rlon fefj n92-fl;dg al t go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the amplitude?

参考答案:    

标记此题
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 +-; dvw pxw,uja horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on u-v+wx dw ,;pjthe 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?

参考答案:    

标记此题
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 horizold38mg5);.zk he/gesy s/rs untal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass ae)k3s yu/rhs .zmg/ g5l;8 desnd 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?

参考答案:    

标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. Itq9we m 0+;toy-1vocav goes through 10 complete oscillations in 5.0 s. What is the m0qeov;1ov-y aw+tc9period?

参考答案:    

标记此题
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 owy i 2apvivg,/p0a *v6f an ideal spring of spring constant 20 N/m with an amplitude of 0.3g yp/aav6vvwi 02*i ,p0 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

参考答案:    

标记此题
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 consta vgw/3k( w4n .5nki* rbqkl nhl5lqwn+bn96 8rnt 20 N/m along a horizontal, frictionless surface. The object osci8hb(rk5*n9 nkb./lnw46lwivr+qn nl q 53 wkgllates 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?

参考答案:    

标记此题
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 hntn0)5r(ql /lzsm :jzagda5, f(w v :is 8.0 J at this time. The mass is cut in half, and the system is again set in motion w zl 0dh:a5s:5mta)jf v(nn,(rglqw/zith amplitude 4.0 cm. What is the energy of the system now?

参考答案:    

标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horj0 6ocob nks95izontal, 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 amplitudeo bks j5096noc of vibration?

参考答案:    

标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attacheet ,jv9n)tsjgl* 3;uj d 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. At what location s ;t,l9)jtegjn3 *vu jare the kinetic energy and the potential energy the same?

参考答案:    

标记此题
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 r2:mxsk1nnu m)1m7c; ydgtt+ spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.:kcdrmx) 7 n;1n g2tmmsyut1+10 m. What is the total mechanical energy of this system?

参考答案:    

标记此题
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 ho .hjmx:7xh-mi9 xyl,mrizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. l9ihh: xmy7,mj. xmx -What is the total mechanical energy of this system?

参考答案:    

标记此题
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 springr2 -bg/k* tjcugl60wq of spring constant 20.0 N/m with an amplitude of 0.250 m. / uqtw rkb6lgg0cj- 2*What is the maximum kinetic energy of this vibrating mass?

参考答案:    

标记此题
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 fr19sotid;swh w1clr( (om its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequenc1hw(si1lsc(dtr 9o ;wy would be observed if the mass had been displaced only 5.0 cm and then released?

参考答案:    

标记此题
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 o q9i9vx)spc1t qhr /,n3:,.ygg( lwu vzallt5bject is 5gac w .t tvlq rpylg9lq,3s:i)/u,h 1xz9v n(displaced by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

参考答案:    

标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is awgbo5hr s. w:,ttached to a spring of spring constant 10 N/m. The object is dirbwso gw.5:h, splaced by
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

参考答案:    

标记此题
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,zong7 )a/v2oey/r rf constant 18 N/m, displaced slightly from its equilibrium position, and release/nv ro)y 7,oez/ra2gf d. What is the frequency of its vibration?

参考答案:    

标记此题
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 owka7rjh 6bk y19hj-1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maxabyjhk-r19 who 7 k1j6imum velocity attained by the mass?

参考答案:    

标记此题
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 springsbcvd1mg,/1 ) xqyk8 wn5sl y2r. Mass A vibrates with 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 compare to the mwysyxb5d l2/k rq vm 8nc,1)g1aximum speed of B?

参考答案:    

标记此题
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 eq ,t so(t1n4* i-b ojt+z:xyadk pn*9jt 3(ozpwuilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distan n w*4kjptytazix3+o,s1b(j ptt9(oo*n -zd :ce of 1.0 cm down and released from rest. Calculate the period of oscillation.

参考答案:    

标记此题
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 sprin45dnl+i o8wnm6quwk -g. 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. Calwnw4- 8q5lknu6odim + culate the total energy of the system.

参考答案:    

标记此题
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 thr(3oob ;xh 5mhe mass stretches the spring 2.0 cm downwar oxhb;5hr(3omd. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion.

参考答案:    

标记此题
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 follznu n8*5 c)7v,tbfx lnowing position versus time equa butn5f nl,)xn*8 7vcztion:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the amplitude of vibration?

参考答案:    

标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonmg d/it:m)ic 9ic motion obeys the following position versus time equam i:9g di/c)mttion:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the period of vibration?

参考答案:    

标记此题
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 versun-im y*9ab 9bc :hv l17 +ewundlb(dg,s time equ he9ylvabnmlw* :9bg ndbd 71cu+,-(iation:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the maximum speed of the object?

参考答案:    

标记此题
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 su:.sti 7gs1* ldc:t bexecutes simple harmonic motion according to the e si.t*csutbg 1dl7: s:quation $y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

参考答案:    

标记此题
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 20.0wul(*ito7; vle(-ck e N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released 7wet-eoc( i(l;* lukvfrom 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.
参考答案:    

标记此题
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) What are its frequency ygt8f m3ms9 xc u,i+i.btpe u)p;p: 6wand period on E mt8iy +wu3tus;: p69ppembfi xgc).,arth?

参考答案:    

标记此题
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.d0: v (vtl d-0 g*5wtjzf+7hg, thndwk What is its period on Earth?

参考答案:    

标记此题
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 avq z1-aj r0b70 npwg;s on Earth. What is its length?

参考答案:    

标记此题
78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather clopp c9 l62s8ytuf4jn *16newlvck is 1.0 m long. What is its period on the Eare1l68tp un9*n2cs4yplvj6 wfth?

参考答案:    

标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather c1vrrv;(nnerc u5 k8c0qo+90s/ f gteylock is 1.0 m long. What is its period on the Moon where the a qv(r0v+ 8/r1nu ef eocct0;yskn59rg cceleration due to gravity is only $1.7 \; m/s^2$?

参考答案:    

标记此题
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 sphericaxw 7kxd3de1i roa72fc 4pryg.), ns/ sl 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 frequencsfrd2 eko .pgny)/47rwxxd,i17 c3 say would have resulted if a 0.50-kg mass (same diameter sphere) had been attached to the string instead?

参考答案:    

标记此题
81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initial angular displacemex3ft 3cg fmwk y*)gv98f5iro1nt of 8.0e. It oscillates wit31 f3kx fy9ig*frv m8gto5c)wh 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?
参考答案:    

标记此题
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 frequencn;o,pcl + bcaj .c2p ktyuy56/y of the wave isj /.noctp;a pcy k,c26 by5lu+ 120 Hz. What is the amplitude?


参考答案:    

标记此题
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 wavv+jdg24 to)thn t 0xtq0zm 02be at a given time. The frequency of the wave is 120 Hz. What is2mbx q )d4ht 0tgv j0n2ztot0+ the wavelength?


本题所包含的其它图片:

参考答案:    

标记此题
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 givi4) 3 m4ags rv q+rnkcx589rs4tptx, aen time. The frequency of the wave is 120 Hz. What is t n48ig,)+ kq9rc4r xavs3axmrtp5st4 he wave speed?


本题所包含的其它图片:

参考答案:    

标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a wave whyl6v:0rdsu7g ra9 n2,l( exd qich has a period of 6.00 ms?

参考答案:    

标记此题
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 frequency of 1500 Hz?by(pa 1nqk29q

参考答案:    

标记此题
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 wavelen d2,rx fmtn3k cs/ckf+ii 1+h-gth of 3.0 f+,k3ifi+ 2ndc /1c-rk tmh sxm?

参考答案:    

标记此题
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 and a fr k7law5j,cm)kequency of 12 Hzm)cw ,alj 7k5k?

参考答案:    

标记此题
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 140-z+x q+ykn:njaxm5a 00 m/s?

参考答案:    

标记此题
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 tec bgyvn*osh88-h ;:qmjjdok7/ 1t/ecnsion of 1350 N. What is the kd8s j71c:/cgohto;* qv/mneyh-jb8wave speed?

参考答案:    

标记此题
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 of 180 N. Wv/-mmd) 9i+ kch iyor,hat is the velocity of propagation of transverse whkv-o i /y+9), rmimdcaves along the string?

参考答案:    

标记此题
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 ton*,;1ce( 2kfwikwsu rlb*e9l tal mass bl9 c r kee1iwlu;wf2,k(*sn* 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.
参考答案:    

标记此题
93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of prop psstui p54*o*b7yl8gjw3i 1kagation of a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is 7ksj 4py**uiop3iwsl5 t8 bg1not a resonant frequency of this string?

参考答案:    

标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a d6e1 rz9vyngan6-.bs fundamental frequency of 500 Hz, which one of the following frequencies can set the string into96 .zrn1sny v abd6-ge resonant vibration?

参考答案:    

标记此题
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 eq(y )ymmks1 k)yual segments in a standing wave driven at a frequency of 480 Hz. What driving fre y 1kk)ymy)ms(quency will set up a standing wave with five equal segments?

参考答案:    

标记此题
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 12 Hz with a stana0x8 1kzz*inifl5b q96i l ui,ding transverse wave pattern containing 3 loops. What frequency is needed if the s1 8 n,ii u6k5*ibxqlziz9al0f tanding wave pattern is to contain 4 loops?

参考答案:    

标记此题
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 oh tg/ x( y78jez 9rn9z1b)ty ax5d8ukmf 20 N. What should its length be if its fundamental resonana1k/ r9 jezd885yxttbunxz 9g (7yh )mce frequency is 220 Hz?

参考答案:    

标记此题
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 andlj, 5mv. ziutk.qe0adv. w6g 9 l0.,l a gqm t.wuvk.9d6z5 ievjength 0.600 m when it is subjected to tension of 50.0 N.

参考答案:    

标记此题
99#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A string of length 2q u(a)gh20 t,;hvwzlv.5 m is fixed at both ends. When the string vibrates at a frequency of 85 Hz, a standing wave with five loops is formed.qhlag) 2zt; vu (vwh,0
(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.
参考答案:    

  • :
  • 总分:99分 及格:59.4分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题,此次习题练习共有 99 道题

    浏览记录|使用帮助|手机版|51fly国际课程 (https://51fly.win)

    GMT+8, 2025-5-8 06:29 , Processed in 0.496919 second(s), 242 queries , Redis On.