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 mq,j h sf d9*w029vbv7;zak mkof waves on a string are s *b;,mf2 aj9dkqh7 v k0vzwm9true?
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 p8 y xt g:f;/w)xvs6bqstring H have the same tension and length. String L has mass m and string H has mass 4m. If the speed waves in string L swp ;bqxx/8y6g) :tfv 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 transverse waves dm bxh83p3x11 dzji/qmown the string. If the p/pz 3h mq8mbd311x xijerson then doubles the rate 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, clamped at both ends, q+j3ltlbh .,)j3b 3 l+kehllphas its tension fixed. A wave generator vibrates the string with a frequj)3tq p3 lbhe l lj+b.+h3kll,ency $f$ 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 ajb npcrfrk;x 5wcx:;m,+ b1u5ssociated 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 peul,db apw/ */friod 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 frequ422 k m(wu/vmystuoyp2 :h9flv ud0*n ency of 200 Hz. The period of oscillation woulkwvuhdn9 mptu0(: fuyly2m *2v4o/ s2d 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 ear xwnct: r qx4o1d.kkji 7k1/t*thquakes travel at different speeds through the earth. S-waves travel about 4000 m/s, P-waves travel at nearly 70*kt4xqn1 /xdr:okitw 1 j c.7k00 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 -5y xhk q5. ,ysfoi dic4ej,p2frequency 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 could look like at anpicyj. -5ed2yok iq, hf4s 5,x 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 Htcgk rj.-v +0cuygens’s Principle?vgjr.0k +ctc -

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 produced aodkx1z3dkpg+n4 5 *-i0jds hug3o xc)t point A an 1xdok5dcx 0z4h3sgi njd3pg+ )ok u*-d are beginning to be reflected 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 frequencyo1 atyeq -z+-4hvaiy0 of 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 iitkn8xv y*(p5 r3s kn-n a uniform medium. If the frequency of the wave 3yrx8 k snp-5k(in*vtsource
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 wib) itai8 5h76zjp6w9 wxzm)lavelength is approxiap5jz 6tzix )lm)ii769wwh8b mately

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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. ngduwe3 7e:k,pa 8ckjw4ld(1 It shows the voltage pkg:7n4 eld (,w3epdw c8ujka1 roduced 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 microphone in front of a tuning fork. It sh ldq ,*.g r4v7bctlp4dows the lbcd.v p4,t ldr4g*7qvoltage
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 wavele1(lad3 +j ze n+cfb-abngth 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(2.20 mc4c hw4rh4d uog)x5 x − 5.0 t) where all quantities given are in MKS units, x is positionhc0) h4g4wcuod24 xrm, 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 wavelength of 3.40 mb0xt 3oesnlq nf wh64d0x-dnx;;2j 5q. At what frequency is this statiod4n;6xtwlsfxqe 0 ;oqdj-xh2 n b05n3n broadcasting?

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姓名:游客(未登录)

总分:19分及格:11.4分时间:不限时

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