The equation of a wave is y = 0.005 sin[x(0.5X - 200t)] where x and y are in meters and t is in seconds. What is the velocity of the wave?

Assessment: JAMB UTME - Physics - 1992 Subject: Physics

Question 1 Report

4000ms-1

400ms-1

250ms-1

40ms-1

Answer Details

y = 0.005 sin[x(0.5X - 200t)]

compare to Y = A sin(kx - wt)

$λ$ = $\frac{2 π}{k}$ and F = $\frac{w}{2 π}$

V= $λ$ F

= $\frac{2 π}{0.5}$ x $\frac{200}{2 π}$

= 400ms-1

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