What is the speed of a motor scooter that can travel 2500ft in 20 min? Give the answer in miles per hour. (1 mile = 5280 foot and 1 hour = 60 mins).

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)