Question

A plane progressive wave is represented by the equation y =2sin (2000πt- 0.5x) the symbols have their usual meanings. what is the frequency of the wave

Answer 1

The frequency of the wave is the frequency of that sine function ... 2,000π ... but that's the angular frequency, in radians per second.

To convert angular frequency to Hz, we have to divide by 2π.

So the frequency of this wave is 1,000 Hz.