1. A car is seen by a pedestrian on a street corner to be moving down the road at 7 m/s. From the frame of reference of a person in the backseat, how fast does the pedestrian
on the street corner appear to be moving?
I

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