Doug and Francene are watching waves on the ocean. They notice that each wave lasts for about 5.7 seconds. As they are watching there is a point where there are 3 tugboats on the top of 3 consecutive crests of waves. They estimate the horizontal distance between the first tugboat and the third tugboat to be 134.0 m (they are very precise estimators, and are very confident in their answer). They also see a bird that is flying in the sky that covers a distance of 2375 m in seconds. Finally, they notice that there is also a tugboat at the bottom of one of the troughs of the waves, and the vertical distance between the tugboat on the crest and the tugboat in the trough is about 12.5 m. a) How often are the waves generated (how often do the waves repeat)? (4 marks) b) How fast are the waves travelling (provide your final answer in km/h). (2 marks) c) What is the amplitude of the waves? (2 marks)