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 statoj qkn597bvhfngnwt,3m a:* 5ements about the speed of waves on a string are trun o h9,:57qbf* k wajtgmn3v5ne?
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 has massjv.s e*t7j / qvrb.2:yhqq- aa m and string H has mass 4m. If the speed waves isv- jq2te hvyq*. ab./j q7r:an 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 transvezp(6 wt v(lv:cisi tu (7l8si0rse waves down the string. If the person then doubles the rate at which he vibrates the strini icswt0 8tzl7:pi(v s6lv(u(g, 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 um8;liak 7y9b3d,hpq ends, has its tension fixed. A wave generator vibrates the string with a frequency plh iky 98,bmudaq37 ;$f$ 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 ass 6luzg.izqv0*g ld)d(ociated with 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 the wave is:1hs:4w;dgu5ght*jn x epmk: :

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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 v*h7j2 (qbm;4px kasytibrating with a frequency of 200 Hz. The period of oscilla ;byp7a q24*hsmj( ktxtion 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-wavvbh 7ex;jvsjo g14, l,ij8+nves (longitudinal) produced by earthquakes travel at different speeds through,e;jj8 vv4vog hx,+n 7s ib1jl the earth. S-waves travel about 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 frequency 3.0 Hz is known to move at 6.0 m/e4toz9ee*, ci n ;g*.fawee0u s on a string. Which one of the following co* n9uw t fe 0.zee,4eig;ea*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 best describes Huygenstbs m.i4/hcr*tdrcu1plf3x7 du21 9n ’s Principle?htbu dci*f/9d31x lrcmsn1 2 . p7urt4

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 pulsqhr9h2 p7gt yzv3/*sres 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 wo 2hgs7rqv93hpz/ * ytruld 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 of9mea a dw95oi1 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 i2of c*74vdf fia4 a)y-djoj8vn a uniform medium. If the frequency of the wave 47afdv- d )2voyfof ac j8j4*isource
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. Its wavgkre/dn ;ou.7cp hp+.elength is approximate..n hp+/r7ce p ;okdugly

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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 5e3-zce0yc; x1b u fpishows the voltage produced from the mipzxfi; -cee53 1 bcyu0crophone 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 okt wy/5y/,zk8 ;kpi vuf a tuning fork. It shows thek ip ,tyk8/w; 5u/yzkv voltage
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 wavezsc9 2u grky/tc9m7h.length 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 = 3.0sin4v+ fb hw51mmb(2.5 x − 5.0 t) where all quantities given are in MKS units, x is position, and t represents time. What is the period of the5 + 4vhmbbwf1m 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 sign:iolbb; 9 h3e7a z*gibkkh3:n2 e-gn2m *bibhal with a wavelength of 3.40 m. At what frequency is this stationk7b2knebni*3hg 2lbh-ih93i z:;b*: magebo broadcasting?

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