Ahydraulic lift is used to lift a heavy box that is pushing down on a 3.0m2 piston with a force of 1500 n. what force needs to be exerted on a 0.08 m2 piston to lift the box?

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