Abaseball bat exerts an average force of 600. newtons east on a ball, imparting an impulse of
3.6 newton•seconds east to the ball. calculate the amount of time the baseball bat is in contact with
the ball. [show all work, including the equation and substitution with units.]

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