Ireally need ! ive been trying to figure thus out fir the past james drives to the store and back in half an hour. the distance to the store is 10 miles, what was his average velocity for the trip? a: 20 miles per hour b: 0 miles per hour c: 5 miles per hour d: 3 miles per hour

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