1. The problem statement, all variables and given/known data a father and son went on a cruise thats 20 ft long. the dad observed the cruise swayed thru 22 complete oscillations in 38 s, and one wave crest pass per/oscillation. the son noticed that each crest required 13s to reach land and the wavelenght is twice the length of the cruise. how far were they from land? 2. Relevant equations velocity=wavelengh/T velocity=wavelengh *f 3. The attempt at a solution for the wavelenghth I have 13.33m because i converted ft into meters. then since they nentioned that the wavelenth is twice the size of the boat. I wanted to divide the number of complete ossiclation 22 by the 38s, but when it added that it takes 13 seconds for each crest to reach land. I got a little confused.. should i continue to do that or should i figure how many crest had hiut land already?? please help! thanks in advance.