by Guest » Mon Apr 19, 2021 1:04 pm
The length of a wave is from one crest to the next. Here there is a crest at the first dock, three crests between docks, and a crest at the second dock. So that we have one wave length from the first dock to the first of the three crests, a second wave length from the first to the second of the three crests, a third wave length from the second to the third of the three crests, and a fourth wave length to the second dock.
That is a total of four wave lengths over 40 feet so each wave length is ? feet?