Ameter stick balances horizontally on a knife-edge at the 50.0 cm mark. with two 4.79 g coins stacked over the 28.8 cm mark, the stick is found to balance at the 38.4 cm mark. what is the mass of the meter stick?

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 of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)