A 50.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0
is 331 m/s. What is the frequency of the second mode?
A. 662 Hz
B. 621 Hz
C. 587 Hz
D. 562 Hz
E. 550 Hz
A. 662 Hz
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Liquid crystal displays make use of interference of light
a. True b. False Indicate whether the statement is true or false
Which one of the following is the correct representation of the electromagnetic waves from longer wavelength to shorter wavelength?
A) radio waves, infrared, microwaves, UV, visible, X-rays, gamma rays B) radio waves, UV, X-rays, microwaves, infrared, visible, gamma rays C) radio waves, microwaves, visible, X-rays, infrared, UV, gamma rays D) radio waves, microwaves, infrared, visible, UV, X-rays, gamma rays E) radio waves, infrared, X-rays, microwaves, UV, visible, gamma rays
The diagram below is an HR diagram. The line indicates the location of the main sequence. Which of the five labeled locations on the HR diagram indicates a luminosity and temperature similar to that of a T Tauri star?
a.
1
b.
2
c.
3
d.
4
e.
5
A statement found to be experimentally valid over a wide range of observed phenomena is referred to as a
A) model. B) theory. C) law. D) principle. E) hypothesis.