Physics

Problem

A sinusoidal progressive wave travelling in air has wavelength

0.80\,\text{m}

. What is the corresponding angular wave number

k

? a)

2.5\,\text{rad m}^{-1}

3.9\,\text{rad m}^{-1}

7.9\,\text{rad m}^{-1}

1.25\,\text{rad m}^{-1}