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A wave is described by the equation y (x, t) = A sin(kx – wt). Which one of the following is true?
27
O The distance from crest to crest is given by
k
O The amplitude is zero when kx = wt
O The wave is a stationary wave with a node at kx = wt
O The value A gives the speed of the wave.
O The wave is travelling in the negative direction

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