a rigid tank contains water vapor at 250C and an unknown pressure. when the tank is cooled to 124C, the vapor starts condensing. estimate the initial pressure in the tank

The diagram shows a person using a piece of gym equipment to lift weight which best describe the body in terms of simple machine

In science and physics what is the standard unit of measure for speed?

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)