Ch 16: Sound & Hearing
Chapter 16, Problem 16
The fundamental frequency of a pipe that is open at both ends is 524 Hz. (a) How long is this pipe? If one end is now closed
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Textbook Question
Consider a sound wave in air that has displacement amplitude 0.0200 mm. Calculate the pressure amplitude for frequencies of (a) 150 Hz; (b) 1500 Hz; (c) 15,000 Hz. In each case compare the result to the pain threshold, which is 30 Pa
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Textbook Question
(b) A metal bar with a length of 1.50 m has density 6400 kg/m3 . Longitudinal sound waves take 3.90 * 10-4 s to travel from one end of the bar to the other. What is Young's modulus for this metal?
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Textbook Question
What must be the stress (F/A) in a stretched wire of a material whose Young's modulus is Y for the speed of longitudinal waves to equal 30 times the speed of transverse waves?
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Textbook Question
The fundamental frequency of a pipe that is open at both ends is 524 Hz. If one end is now closed, find (b) the wavelength
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Textbook Question
The fundamental frequency of a pipe that is open at both ends is 524 Hz. (c) the frequency of the new fundamental.
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Textbook Question
Two guitarists attempt to play the same note of wavelength 64.8 cm at the same time, but one of the instruments is slightly out of tune and plays a note of wavelength 65.2 cm instead. What is the frequency of the beats these musicians hear when they play together?
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