Two boats are anchored in the harbor, separated by a horizontal distance of 18 m. The boats bob up and down as waves enter the harbor. When one boat is at its

highest point, the other is at its lowest point and there are no wave crests between

them. Each boat makes exactly 5 complete up-and-down cycles every 10.0 s. The

vertical distance between a boat's highest and lowest position is 2.6 m.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)