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 aboutt : 0bl:mff.(tik4- qib,p dvrkj6-et the speed of waves on a string are true,-0 kdffvpi qmtrle(b -4tk6:.bi j:t?
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 an;a3 wocju 1lt+tr. 9ltd length. String L has mass m and string H has mass 4m. ;wla1c. j +tru tto39lIf the speed waves in 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 sendin/rh:rz + fex+*de mw,jg transverse waves down the string. If the person then doubles the rate at +we rje+fxmh:z,* /dr 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 -tk. 2 3/lta6tsn(l tf r7yoarboth ends, has its tension fixed. A wave generator vibrates the string with a frequency3 r l2ts/t7takaltorn (f-6 .y $f$ 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 soundhj4xz emf3(* if+6pcc 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 f 8zxyc*l- ,bkyrequency 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. Th*p;8 n)lzzaki*xo+1fi xq7 q ve period of oscillanx87 )+ 1q*po vx zikif;qazl*tion 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) proj 5/1c6vvv s/dwp.nqiduced by earthquakes 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-wa/v j/ .nvd5wscv6 qpi1ves 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 x1,7.- e(gf bkoc9ni-bdnw t2 iu)mkt plk6p5Hz 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 kd-5(lc91kut t2.ig n 7w)pi6mn,ebxokb- p fthe 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 fy+lil538v th oollowing statements best describes Huygens’s Principle?hti +58yvlo3l

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 whichh bj74+u ysh2e 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 would represent a virtual sou4 y2eh+hb7 ujsrce 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 doub zo+s l.,al55 snrq(z3rz8xofled, 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 j *+8t2tjtzber-kc(j cgc3 q9i48h 7b b/pfxa in a uniform medium. If the frequency of b9 t7 ceq(rc4cj ixz8 b/*8jj-ktgp2t+a3h bf the wave 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 46 x)b,kkhz5sp00 Hz. Its wavelength is approxih,6sbk)z 5 pxkmately

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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 vocd u7+*zmpf-(kn fpjl :6h8 shows the voltage produced ffj fz konu+7pm*(hpv8c:6l- drom 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 ent yqlaq( :)1f /;/gw1nllaha tuning fork. It shows the v(hf : nte)/ ;nql1/1lawlaq gyoltage
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 g;b pnanx5a+ kfbk./g/7jcp8a 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 all quanuhmm,( )kv 8xmtities given are in MKS units, x is position, and t represents time. What is the period of the ,8xmmk ( hmu)vwave (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 m. y/ l6qs( s dug6tnaa87At what frequency is this station b/yd uql7a(sa 6ts8ng 6roadcasting?

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总分:19分及格:11.4分时间:不限时

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