A wave is described by y(x,t)= 0.1 sin(3x - 10t), where x is in meters, y is in centimeters and t is in seconds. At time t = 0, the point at x = 0 has a vertical displacement y = 0.0 cm.When is its displacement equal to 0.1 cm?

Question

A)0.16 s B)0.47 s C)2.5 s

The correct answer is (B) 0.47s, but I think (A) is also one of the correct answers. Can someone tell me where I am wrong?

Answer 1

Ans

Answer 2

You are correct, YH!