# Physics

A speaker moves a solid cone up and down to compress air making sounds waves at a frequency of 135 Hz. How long does it take for the cone to travel from it's lowest and highest points

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asked by Sandara
1. T = period = 1/f = 1/135 = .00741 seconds

low point to high point is a half of a cycle
so
.00741/2 = .0037 second

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posted by Damon

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