Wave Basic Concepts - 无忧得胜-网上国际课程 (5edu.win)

?作业考试练习?美国物理杯赛(Physics Bowl)?Wave Basic Concepts

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习题练习：Wave Basic Concepts

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作者: admin 发布日期: 2024-07-31 18:43 总分: 19分得分: _____________

答题人: 游客未登录开始时间: 24年07月31日 18:43 切换到: 整卷模式

1#

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94.06: Which of the following statements about the speed of waves on a string8juzq*dvpq(h f 8xx: / are true?z( pv u*/:j8qh 8qdxfx
I. The speed depends on the tension in the string.
II. The speed depends on the frequency.
III. The speed depends on the mass per unit length of the string.

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

97.23: String L and string H have the same tension and ij8t,r1vzm7f g xm; x:length. String L has mass m and string H has mass 4m. If the speed ,vz7mx1 :xmg; ftjir8 waves in string L is v, the speed of waves in string H is

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

07.44: A person vibrates the end of a string sending transver0xe8 emrpx(pkiql(.9pj 3 :c lse waves down the string. If the person then doubles the rate at which he vibrates the string, the speed of :kjmp .pcq(38l09x xi (leprethe waves

A. doubles and the wavelength is unchanged

B. doubles and the wavelength doubled

C. doubles while the wavelength is halved

D. is unchanged while the wavelength is doubled

E. is unchanged while the wavelength is halved.

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

11.23: A string, clamphbi5z)6 f;a4fex4a s+h* yshped at both ends, has its tension fixed. A wave generator vibrateshs5 e4p+bx4fy* a 6ai hfs);zh the string with a frequency $f$ producing waves of wavelength $\lambda$ which have speed v. The frequency of the wave generator now is doubled to $2f$. Which one of the following choices best describes the new values of the wavelength of waves produced and the speed of the waves on the string？

A. Wavelength is $0.5\lambda$,Wave Speed is v

B. Wavelength is $0.5\lambda$,Wave Speed is 2v

C. Wavelength is $\lambda$,Wave Speed is 2v

D. Wavelength is $\lambda$,Wave Speed is v

E. Wavelength is $2\lambda$,Wave Speed is 4v

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

95.01： Which is not associated with a sound wavemy0uwv u.qk+ir8;aafw ;-)k m?

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

95.04： A wave has a frequency of 50 Hz. Ty5()pi wkb 2 (z+k:c ja8+xgm+ujqhfphe period of the wave is:

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

04.04： A metal bar is vibrat5*2*ld g a.+ thlh ykp;+rovfiing with a frequency of 200 Hz. The period of oscill2p l* .;tyfrihdvo*5hgl++ akation would be:

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.38: The S-waves (transverse) and P-waves (longitudi wr(h +.)8sg eseo5.zeq kub2fnal) produced by earthquakes travel at different speeds through the earth. S-waves travel about 4000 m/s, P-waves travel at nearly 7000 m/s, howf..z eheg)q k 2+eb58r sw(uso far away must an earthquake be for the P-waves to arrive 2 minutes before the S-waves?

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

17.07: A traveling sine wave of frequenc :bydi+ fe:6ksy 3.0 Hz is known to move at 6.0 m/s on a string. Which one of the s: i+yk:6bdef following figures best represents what a one-meter section of the string could look like at an instant of time?

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

13.24: Which one of the following statements beysulomu1 rvg6bp vgt3i0;u9 tb0 ;y,r.0qcu ; st describes Huygens’s Principle?m096,spt ;1b ruy;bu gtroq0.gil3cu;uyv v 0

A. An additional pressure is transmitted undiminished to all points in the fluid and to the walls of the container.

B. Each point on a wavefront acts as a source of secondary spherical wavelets (new waves).

C. For every action force, there is an equal but opposite reaction force.

D. It is impossible to have a process which has the sole result of transferring energy from a low temperature reservoir to a high temperature reservoir.

E. A time-changing magnetic field has an associated induced electric field.

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

02.07: The diagram shows tww-ktjsa mvj8vbt la;.*g : cos9- c02to water pulses which were originally produced at point A and are beginning to be reflected from a wide barrier as shown. Which of the points in the diagram would represent a virtuac.owtjm - *v t;t-9absjkg0:lv s ac28l source for the reflected waves?

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

96.03: If the frequency o3,9ipn qc 6kxym* t.czf sound is doubled, the wavelength:

A. halves and the speed remains unchanged.

B. doubles and the speed remains unchanged.

C. is unchanged and the speed doubles.

D. is unchanged and the speed halves.

E. the wavelength halves and the speed halves.

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

99.27: Assume that waves are propagating in a uniform medium. If thk7 tzuetip,,cw2c40m y)zr , te frequency o7 w0c ep4yzuitttck ,zm2,),r f the wave source
doubles then

A. the speed of the waves doubles

B. the wavelength of the waves doubles

C. the speed of the waves halves

D. the wavelength of the waves halves

E. none of the above

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

98.02: An observer hears a sound with frequency 400 Hz. Its5zg,m p7 tuh clp*/h-x .y/wfk wavelength is approximately.5xtfw 7l/kz ,gpcmp*u-hyh/

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The graph below was produce by a microphone in front of a tuning fork. It .xfpws.38 9- ieguprhshows the voltage produced from 3w8e.sgufi xr.pp-9h the microphone as a function of time.

04.18: The frequency of the tuning fork is (approximately)

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The graph below was produce by a microphone in front of a tuning fork. It v1it5m;w7gl4 p j dd8zshows the voltage 7 4zv8p1mtjl 5wdi;d g
produced from the microphone as a function of time.

04.19: In order to calculate the speed of sound from the graph, you would also need to know

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

06.28: A radio signal witwzp ( 5xk/m2kzv5a 3anh a wavelength of $1.2 × 10^{−4}\:m$ is sent to a distance asteroid, is reflected, and returns to Earth 72 hours and 48 minutes later. How far from Earth is the asteroid?

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

08.46: A traveling wave has the form y = 3.0sin(2.5 x − 5.0 t) where all q 5g,1*, p2fdrcrgvq pp wj(rc-uantities given are in MKS units, x is position, and t represents time. What is p,5wrqpc,*c(rgdgf jprv1 -2 the period of the wave (in seconds)?

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19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

11.17: A new radio station broadcasts its signal with a wavelength of 3.40 y n (f2ofe 1hc3pxx0 rwfj2ma3n-9;e xm. At what frequency is this station broad moj-ea1r 3yhxn93xpcf2(efw0 nx ;2fcasting?

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