Deriving Wave Quantities

Classical Mechanics Level 1

What is the wavenumber k k of a wave with velocity 5 m / s 5 \text{ m}/\text{s} and angular frequency 2 π × 100 Hz 2\pi \times 100 \text{ Hz} , in inverse meters?

10 π 10 \pi 40 π 40 \pi 5 π 5 \pi π \pi

Matt DeCross by Matt DeCross , 27, USA

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1 solution

Avadhoot Sinkar
Mar 12, 2016

We know f=w/2π. And v=f×(wavelength) Hence wavelength=1/20 Wave number=2π/wavelength

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