Question

What is the velocity of a wave with a frequency of 800 Hz and a wavelength of 0.40 m?

Answer 1

Wave speed = (frequency) (wavelength)

Wave speed = (800 / sec) (0.4 m)

Wave speed = 320 m/s .

We have no information describing the direction in which the wave
is propagating, so we have no way to describe its velocity further.

Answer 2

320m/s should be the answer i think it is anyways