# Physics

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If the wavelength of the sound wave is 1.3 meters, what is the frequency?

• Physics -

L = 1.3m * 3.3ft/m = 4.29ft.

L = V(1/F) = 4.29FT,
L = 990ft/us * (1/f)us = 4.29,
L = 990 / f = 4.29,
4.29f = 990,
f = 990 / 4.29 = 231Mh.

• Physics -

CORRECTION!

The speed of sound in air = 343m/s.
L = 343m/s * (1/f)s = 1.3m,
343 / f = 1.3,
1.3f = 343,
f = 343 / 1.3 = 263.8Hz.

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