T = period = time it takes for one complete vibration ... a trough is 52 cm and 20 waves pass the boat in 30 seconds. 1. The amplitude of a wave is the maximum displacement of a point of a wave ...

T = period = time it takes for one complete vibration ... a trough is 52 cm and 20 waves pass the boat in 30 seconds. 1. The amplitude of a wave is the maximum displacement of a point of a wave ...