(chatquestion)...(3) 1:4 (4) 4 12. A wave represented by the equation y = acos(kx- ot) is superposed with another wave to form a stationary wave such that the point x = 0 is a node. The equation for the other wave is (1) asin(kx + wt) (2) -acos(kx + ot) (3) -acos(kx – of) (4) -asin(kx – ot)

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