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 sth by2 v6beyq )p;stx63atements about the speed of waves on a string are )bvse;2q6h y3b6p xyt 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 length. String L heqw ya1+g:at 0as mass m and string H has mass 4m. If the speed waves in string L is v, the speed of waves in st aew+:gayq 10tring 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 strzh svplwf927 -ing sending transverse waves down the string. If the person then doubles the rate at which he vibrates tzs92h7 p-f vlwhe 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 tens7wqw+xe fz /e.ion fixed. A wave generator vibrates the string with a frequenzq w/x .eef+7wcy $f$ 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 a7yvlh,drnx j- 8h 3/7 yxl-bzn 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 i2j5qi dz 9adgp4+w 9gos:

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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 p/ l0 a97h, scejxsa2smeriod of oscillationmxs ah s79e 2casj,l0/ 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 (longitudinal) produced by earthq s 1psp9i5y1*fvzh;qvuakes travel at different speeds through the earth. S-waves travel a 15vi yfz1qspsvh9*;pbout 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 freque cxpqr+0q7 cmq;56saxt wi, 7hncy 3.0 Hz is known to move at 6.0 m/s on a string. Which one of the following figures best rp,7txqa7s + x5 60whcr ;qcqmiepresents 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 Huygens’s Principlnynpx )1g 8n( 2xllfe;e?gpyxf )xe;ln2n 8ln1(

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 wericjp;zr7wlz w-bxx2dumh -2 vhu8 4l; snd:3/e originally produced at point A and are beginning to be reflected from a wide barrier as shown. Which of the poin3l u;zu: s/ dblxh2;8drnzwix- hcmj7vp2 -w 4ts 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 xg7cbfki.zb mg-el(r:bt qft2a( ;e6 h d)3w0sound 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 uniform medium. If the fred e573o0qhmpa0ntl3 (df2 li lquency of the l03 lol( pmtnqf0 di3eh75a d2wave 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 Hz. Its wavelength is appbpyvgbq(+7 z-mm6rc g7h(7 yiroximatempr776(myqg(bgbh-cz+ i7 yvly

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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 inli/v t;q.w 4ln qwi)(y front of a tuning fork. It shows the voltage produce4 nl qyi/wwv(tlq;).id from 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 microcz4 - tm5w0)m yeifkc;.+xleqphone in front of a tuning fork. It shows the voltage +k)45 ciqw0teym. z -xl;e fmc
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 wavelength of 6cyk;cis (zop u h(1 (bij cb8v5kao87s:/ niz$1.2 × 10^{−4}\:m$ 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 x − 5.0 t)hoh 04 ,zpm:jb where all quantities giveoj0 hz :bm,4phn are 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 signal with a wavelengtf :j/sunh w6rs z3*/:;ozuxivh of 3.40 m. At what frequency is this station bro3uio://hnzsrfx ;z u 6w*jvs:adcasting?

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