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 speed of wmd xarmj-: y*(aves on a string are - armj:(y *xmdtrue?
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 zswky mz 0).htn2rx)f: - id/qthe same tension and length. String L has mass m and string H has mass 4m. If the speed waves in string L is v, the speed of waves in string H mqh /)-.wn t sdrk:zix2f0)yzis

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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 transverse waves downehqeut-m:bod6/ 7ao1m.sz i , the string. If theo h1qu,7id.momze/se 6-t a b: person then doubles 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. A ;mjw9r81cbg/qjr-x yqepk2np 49 kz4wave generator vibrates the string with a frequency xqjq ;/gj m-eprpywczk44k98rn12 b9$f$ 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 af5b7:tst +zj s0rwy y8o+bf:.mm c/ru 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 ofdu+ v)gni(3kn 4ukt8k 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 vibrating with a frequency of 200 Hz. The period of oscill,uto u1lz*f:k ati u:uz 1*kolft,on 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 (longitudinkp4-7tpbc(j:z hs z;2o 0gez mal) 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, how foc-;z:p2kzs7 p(mt0zeh b 4gj ar 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 frequency 3.0 Hz is known to move at 3.55qow+. 9uaelxo.vidlq kj 6.0 m/s on a string. Which one of the ve xq5w3l.j.5 qlakoi.du+o9following 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 statemt ;4fzp 1hsyxld0 vy4-ents best describes Huygens’s Principle?0-f;tpy1y xsh4vz 4 dl

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 pulses19yijy l2l3fw 8tg0 om which were originally produced at point A and are beginning to be reflected from a wide barrier as shown. Which of the points i3owyf 9l2y08g m ltij1n 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 of sound is doubled, the wave 90k9u2 d4dn+f xljftulength:

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 wav ra+mh*+3lu3(ndvec qe8v5a 7 tzol5a es are propagating in a uniform medium. If the frequency of the wave5n7m+e3c 3qaod* lr 5lt ve8a+ ahz(vu 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 Hznuo mt1 3l6qen )2v7uc. Its wavelength is approximalo7 n16 t)m3vnc u2qeutely

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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 foo ndq)71 ugwx7rk. It shows the voltage produced from the micropuwo)1g7qdnx 7hone 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 sg /tho w:6+qrohows the volth6+ oorw/:qtgage
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 wavelenvpv pg;s: /ko8gth 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 wa5gen9og lv6b4+ kq/die z5c b;yk)j3q ve has the form y = 3.0sin(2.5 x − 5.0 t) where all quantities given are in MKS units, x is position, and t represents ti bqyl3o)5bd z; jg4/ c9k6k+qgnive5 eme. 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 signal with a wavelength of 3.4 .tvi:j:qr : gigy oknw/d3n370 m. At what frequency is this station brn7.j gi :: 3it:qgdnk3wyrv/ ooadcasting?

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总分:19分及格:11.4分时间:不限时

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