The percentage of the energy supplied to a device is called

In solar energy, which device is used to transfer energy ?

A device which can turn about a point is called

The force which opposes one surface moving over another is

The unit of pressure is

A mixture of methane and carbon dioxide with energy content is

The force acting on unit area is called

With depth, pressure

The energy possessed by a body by virtue of its motion is called

The energy which can not be replaced when once used up is