Question

If 3 ocean waves travel past the end of the pier in 9 seconds and the wavelength of the ocean waves are 15 m long, what is the speed of the ocean wave?

Answer 1

Step-by-step explanation:

`period = (3)/(9) \\ f = (9)/(3) = 3 \: hertz \\ v = f \lambda \\ v = 3 * 15 \\ v = 45 \: ms {}^( - 1)`