Question
The equation of a travelling wave is
Where y is the microns, t in seconds and x in metres. The ratio of the maximum particle velocity and velocity of the wave is

3.6



easy
Solution
Amplitude A = 60 microns = 60 × 10^{–6} m. Angular frequency ω = 1800 rad s^{–1} and wave number . Wave velocity is v = ω/k = 1800/6 = 300 ms^{–1}. Maximum particle velocity
Therefore,
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