In a first experiment, a sinusoidal sound wave is sent through a long tube of air, transporting energy at the average rate of Pavg,1. In a second experiment, two other sound waves, identical to the first one, are to be sent simultaneously through the tube with a phase difference f of either 0, 0.2 wavelength, or 0.5 wavelength between the waves. (a) With only mental calculation, rank those choices of f according to the average rate at which the waves will transport energy, greatest first. (b) For the first choice of f, what is the average rate in terms of Pavg,1?
Interference of sound
Seiche
A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.
In a first experiment, a sinusoidal sound wave is sent through
a long tube of air, transporting energy at the average rate of Pavg,1.
In a second experiment, two other sound waves, identical to the
first one, are to be sent simultaneously through the tube with a
phase difference f of either 0, 0.2 wavelength, or 0.5 wavelength
between the waves. (a) With only mental calculation, rank those
choices of f according to the average rate at which the waves will
transport energy, greatest first. (b) For the first choice of f, what is
the average rate in terms of Pavg,1?
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