A swimmer, capable of swimming at a speed of 1.78 m/s in still water (i. e., the swimmer can swim with a speed of 1.78 m/s relative to the water), starts to swim directly across a 2.83-km-wide river. However, the current is 1.09 m/s, and it carries the swimmer downstream. (a) How long does it take the swimmer to cross the river? (b) How far downstream will the swimmer be upon reaching the other side of the river?

Both independent and dependent clauses

Convection occurs when thermal energy is transferred by the movement of

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 (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to