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 waves on a st 25okm2xm9l ax8 ar(bnof a0i*ring are trux0ao28 rma5 b okfial(2mnx*9e?
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 tensxam*7kzbg+ dcu 4k-7pion and length. String L has mass m and string H has mass 4m. If the speed waves in string L is v, the speed ofb -77mdapcg+zk* uxk4 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 xery*+ y+h)2tty ldg2string sending transverse waves down the string. If the person then doubles the rate at which he vibrates the string, the speed of the wave2+dt) *yl xy tye2hrg+s

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 56w+ kx;lrme4cv6ob k 3zg* wwfixed. A wave generator vibrates thez ml +kor3b* k4xcw;ww6g6v5e 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 soun)+ n)ise9tmq se5f35x oed.nzd 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 wav/uila)o * onn:e 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 (8gan*fi 8wzwpb 0pdfce54p ( of oscillatiop8*0 z pnce8db( gw wf5(fpai4n 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 (transverp a3 50k.7odhmstmv. djlp2kg a 3ft7-se) and P-waves (longitudinal) produced by earthquakes travel at different speeds through the earth. S-waves travel abou-.a2plgsk mpdh 5jdk tt.vo fa77 03m3t 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: jcb8yi rmp+6;ar0 s9mzjxg- ncy 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 sj 6: xmyzi9bcs+a -m;gp8j r0rtring 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 Prine.u,5g )x) tvq3zfupwciple?x. u3f)ugv )z,5w etqp

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 shzm1ic s y8 h9dj:w:,zkf(cv;qows two water pulses which were originally produced at point A and are beginning to be reflected from a wi:s j1 ;qz:9 fi kcwchv(ydz,8mde 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 sound is doubled, the wave e) lur4;shrvw4uv3d1 length:

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 frequenc-orqnv6vx/g (g: )loa y of the wave svn:a6 ov/xrg )q(- logource
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 wad sgzlj k+r)h2inc+c:f j -s.5velength is approxl5ng.jc :hz+s+)j- ki 2rcdfsimately

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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 frojb y:ri: xn1;qnt of a tuning fork. It shows the voltage produced from the microphone as a function of timebx:r;jn:y i 1q.

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 micropho42q d*htsg7kune in front of a tuning fork. It shows the voltaghtg s d2u*q74ke
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 *yv0nt b7 y: o:zd,xzbwith 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 x − 5.0 t) where -e)vns )ie2bw all quantities given areb-i2sw)v e)n e 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 statieanmj; p27sv0fp mo(4 1i-cfuon broadcasts its signal with a wavelength of 3.40 m. At what freqump 0o1f4-fs;2ape7 vmcn uij(ency is this station broadcasting?

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