Colin Donnelly-
Wave speed
ν = fλ
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Period
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Angular frequency
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Speed of sound
B is the bulk modulus
ρ is the density of the medium
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Doppler effect
f′ is the perceived frequency
f is the actual emitted frequency
ν is the speed of sound in the medium
νD is the speed of the detector
νS is the speed of the source
The upper sign should be used when the detector or source is moving toward the other object. The lower sign should be used when the detector or source is moving away from the other object.
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Intensity
P is the power
A is the area
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Sound level
I0 = 1 x 10-12 W/m2
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Change in sound level
I0 = 1 x 10-12 W/m2
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Beat frequency
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Wavelength of a standing wave (strings and open pipes)
L is the length of the string/pipe
n = 1, 2, 3 ...
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Frequency of a standing wave (strings and open pipes)
L is the length of the string/pipe
n = 1, 2, 3 ...
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Wavelength of a standing wave (closed pipes)
L is the length of the pipe
n = 1, 3, 5 ...
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Frequency of a standing wave (closed pipes)
L is the length of the pipe
n = 1, 3, 5 ...
