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 wav; au l kcwix leu4q7uh;+gr*,0es on a string ar; x,ulue; g4ac0r7hul w+ *qike true?
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 le nj*s)+ryv c3ength. String L has mass m and string H has mass 4m. If the speed waves in stringjen* 3)y+s rvc 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 vibrates79,n k/n mpvyasc8b* z the end of a string sending transverse waves down the string. If the person then doubles the rate at which he vibrates the string, the speed of 9zcv km7sp *8banyn/, 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 cz dukax0yfdx- 21)5-v kph1 bboth ends, has its tension fixed. A wave generator vibratkap f) hbx10d2-x -cu1yvzd 5kes 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 soua hv9p/f a4x7 ry45ugwnd 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 frujayttw2;w c:j/0g e5equency of 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 with a frequency of 200 Hz. The period of oscilpn27u9 nbe(zalation would (e79up nzban2 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 (longitudinal) produced by earth/i7dqs aej uw/.zj8 2wquakes travel at different speeds through 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 mzj wuew2/. 78qjdas/ iinutes 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/s e 9n4lxy9(cfkon a string. Which one of the following figue9nf l (kx9c4yres 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 Huy,5x1 otvoifr.gens’s Principle?r,v foi1xo5. t

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 origio t qh9:wey+e,za7-sdr4 j9g-0 hzu pbnally produced at point A and are beginning to be reh +y9-ohjepgu4e-0:twz ,zb srq79 daflected from a wide barrier 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 of q 1jm(kj* 6bmxow (- tlygb.( te9imo*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 ug)udlr .u8 (nvniform medium. If the frequency of the wave sourc v(lgn.r)ud8u e
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 sg9pym90+juf. Its wavelength is approximately g9+j9spfyum 0

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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 fsjl a6qbz,eh42 z 3a7fork. It shows the voltage produced feafs47 b ,qzhl26azj 3rom 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 jzim7a 8+ys 8h3vh.u2rlbdo 2 tuning fork. It shows the voltag d2 +h.m2zhobjy8irs3u78 v lae
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 signa ch7s;w2pd(wz :1nwnc l 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 form y = 3.0sin(2.5*vt ia,whmw o; 9o*(cq x − 5.0 t) where all quantities given arw(acoqv 9tmoh,;w ** ie in MKS units, x is position, and t represents 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 si2luoqo as*/n( krr9o9gnal with a wavelength of 3.40 m. At what frequency is this stak(2 9r ns aouoorq9*l/tion broadcasting?

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