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D1(x,t) = A sin[kx +ωt +φ]

and

D2 (x,t) = A sin[kx −ωt +φ] where A=0.01m, k=5rad.m−1,ω=200rad.s−1 andφ=π3rad

(i) Use the appropriate trigonometric identity to find the displacement resulting from the superposition of these two waves.

(ii) Is the wave resulting from this superposition a travelling wave? Briefly explain your answer.

(iii) Find a value for the separation between adjacent maxima (antinodes) in the resultant wave.

thanks guys