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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

94.06: Which of the following statements about the spee)qjy 4 3yt+vjq fx3ow7d of waves on a string are truw )q3ytofjxjqy437v + e?
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 length. String L oi4h-.auncl g3 qe.v2has mass m and string H has mass 4m. If the speed waves in string L is v, the speed of waves in string hu.a 42oqlg e-i.n3vc 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 ofz-lk3e 1kvkw0 a string sending transverse waves down the string. If the person then dl- e0kvkwkz 13oubles the rate at which he vibrates the string, the speed of the 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, clamped at both ends, has its tension fixed. 5depaudaku8 c ,7 j-2fA wave generator vibrat2-d,j d5a8u uc7faekpes 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 witx 0lk z1f,n t+xkptlh in.,a:2h a sound wave?

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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. The period of tfv5 a-eljpi+ a*/eig) 6 vkdh4he 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 vibrating with a frequenh wvhg; er;,wf x/rlh6bu)2z 4cy of 200 Hz. The period of oscillation would be/2xw;uve4h6 r fh;)b ,hwz glr:

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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 i2 3 vlsnar-6v(y( -nr .visdv(longitudinal) produced by earthquakes travel at different speeds through the earth. S-waves travel aboutva3vs-lv s ny.rin d i-(vr(62 4000 m/s, P-waves travel at nearly 7000 m/s, how 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 fr.l;e ptyja,i--is 9 mxequency 3.0 Hz is known to move at 6.0 m/s on a string. Which one of the following figures best represents what a one-meter sectil mi9ye.-x,a s;pt- jion 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 best describes Huygens7djwpmt; pr:v6 y5db)’s Principle?dp6yt;jr:7mw)d5vb p

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 two water pulses which were originally prodng 32ry-nt c 8+ciot3hsna((r uced at point A and are beginning to be reflected from a wide barn(tr n(83s2n rha cg-3 ticoy+rier as shown. Which of the points in the diagram would represent a virtual 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 h2kuan(7xyqtb0 r z8: of 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 ww/+7a qdjp( ybaves are propagating in a uniform medium. If the frequency of the wave sourc+/y pjad(bwq7e
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 83l3omxtm3(vzo jn eq;p vd: 3Hz. Its wavelength is approximately ve3z3 xjv3m:;qolot83 (npm d

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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 fron w9 a3c*uo,lnd6bgnpaj:2pj 4t of a tuning fork. It shows the voltage produced from the microphone 2p: ag,3po bdn96aucj*wjl4n 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 tu7)fddmaql9 a99gse+w m*sry;ning fork. It shows the voltage );sfw7mrlqd 9 9s* admgy9+ae
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 with a wavelenxl-f +opwgc.l 0dl19.hipp u+gth 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 = 3.0-;zxp*/j5ky;n 3i) isti fobmsin(2.5 x − 5.0 t) where all quantities given are in MKS units, x is position, and t represent-ix;p)zk;n5tf*is 3j ib/ omys time. What is 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 signas 5ri ,a2:jth:3kbazcprs /i 3l with a wavelength of 3.40 m. At what frequency is jkz :2i3 3asr r:t phb,c5ai/sthis station broadcasting?

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总分:19分及格:11.4分时间:不限时

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