5. The material cost of World War II has been estimated at $1.5 trillion. In May 1959, the total cost to the Soviet Union was estimated at 2,500,000,000,000
rubles. Express this monetary value in scientific notation.

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)