Question

For the wave $y=5sin30\pi [t-(x/240\left)\right]$ is in seconds. Find the frequency of the wave(in Hz).

Answer 1

For wave $y=Asin[\omega t-kx]$,

$k=\frac{2\pi }{\lambda }$

and $\omega =2\pi \nu$

Thus, $30\pi =2\pi \nu$

$⟹\nu =15Hz$