An avalanche of sand along some rare desert sand dunes can produce a booming that is loud
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An avalanche of sand along some rare desert sand dunes can produce a booming that is loud enough to be heard l0 km away. The booming apparently results from a periodic oscillation of the sliding layer of sand-the layer's thickness expands and contracts. If the emitted frequency is 90 Hz, what are
(a) The period of the thickness oscillation and
(b) The wavelength of the sound?
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Related Book For 
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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