A wave has angular frequency 46.2rad/s and wavelength 3.57m. What is its wave number?

Question

b).What is its wave speed?

Answer 1

a) wave number = 1/(wavelength)
= 0.280 m^-1

b) wave speed = (wavelength)*(frequency)
= (wavelength)*(angular freq.)/(2*pi)
= 26.25 m/s