ynwking33 ynwking33

08-01-2020
Physics

contestada

You are told that a wave has a wavelength of 450 x 10^-9 m and a frequency of 6.67 x 1014 Hz. Is it a sound wave?
How do you know?

Respuesta :

MathPhys MathPhys

08-01-2020

Explanation:

The speed of a wave is the frequency times wavelength.

v = fλ

v = (6.67×10¹⁴ Hz) (450×10⁻⁹ m)

v = 3.0×10⁸ m/s

This wave moves at the speed of light, so it cannot be a sound wave.

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