05.07.2009
Thermal energy which is not used for the generation of electricity
Mechanical energy is the energy an object has because of its motion or position and the forces acting on it. >
A measure of how heavy or light a petroleum liquid is compared to water. If its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus a measure of the relative density of a petroleum liquid and the density of water, but it is used to compare the relative densities of petroleum liquids