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 statej8yvtcpv4;s0* 7v hhdments about the speed of waves on a string are t*vs 0 4h87hdy vp;jvctrue?
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 same69ymu np0gzg 7 tension and length. String L has mass m and string H has mass pgn09 6umzyg7 4m. If the speed 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 vibrate/tvms x/z:8i is the end of a string sending transverse waves down the string. If the person then doubles the rateiivt ms/x/8:z 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, clamw i/ r* *qkrksj.4m6i3jv4gyoped at both ends, has its tension fixed. A wave generator vibrates the string wit3ko s*g6*yqi4/ji kr4wv r .jmh 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 (w 9dq vrx,c.x- hzd981ny pepwave?

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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 ofqlh 62i-6nyf1l wh) l0yxa n(x 50 Hz. The 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 vibrating wit j1q-. *xrifogh a frequency of 200 Hz. The period of oscillatj*iqx r .1-ofgion 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 (longitudiz22d q5oentba.4 v39ki j:xec nal) produced by earthquakes travel at different speeds through the earth. S-waves travel about 4000 m/s, P-5et 4a2cvnd9jxezkqoi: 3 b.2waves 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 fr4ao, y8t/m jysequency 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 section of the string cs/, ta8yy4ojmould 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 Huyg*. bzvxjat-cr(gzg9 z)(n q- 8dg9x 7gdct 2rgens’s Principle?xbg8a ccgx7grggnjdz- tz9.9 q(r2-z) tdv *(

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 sdcp 8 .l0cmttk093trproduced at point A and are beginning to be reflected from a wide barrier as shown. Which of the portl0dt tc k3ps 0c.m89ints 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 of sound is doubled, a6y u hqc79-9jfba+ hhxtvno 9t+,v 1i;h ae4sthe 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 b);xiv0h8 p)k7f8bu z0xaot hmedium. If the frequency of the wave sourxfzx0ptiv)b8bu ; a0hk7h )8oce
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 frequenj.k 1 im8qgb4ycy 400 Hz. Its wavelength is approxkybi q14mgj 8.imately

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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 show9qpqae+u3tv lu. p w8+s the voltage produced from the microphone as a function of 3pw+ qq8 .9va+etlupu 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 8t 6hvmni1 uic2 )7s;igna8k gin front of a tuning fork. It shows the voltage s1aiu2knvgn) ht87 i gcm6i8;
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 )l z +m6rrmc+ejvcc -+d3 i,vanpc((u with 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 m h9tbecgrscu. u7vud+)5.o. form y = 3.0sin(2.5 x − 5.0 t) where all quantities given are in MKS units, x is position, and t represents tiomhus ugr.9v 5ec.t+ 7.)cbudme. 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 bl-+ro+efj1 km+ q-h0egpvd+ broadcasts its signal with a wavelength of 3.40 m. At what frequency is this stajrv1++l - -qh 0fbepm++d geoktion broadcasting?

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总分:19分及格:11.4分时间:不限时

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