A is correct-a standing wave; y = 0 at x = 0 for all values of t (a node)

B is correct since 2X0.015 m = 0.03 m

C is correct: w = 2p /T = 150. Therefore T = 2 /150 = 0.042 s

D is not correct: k = 2 / , = 2 /15 = 0.42m. v = f = (0.42)(1/.042) = 10 m/s

E is correct: See value of in previous line.

Answer is D

Return