river is a mean of rest & an steam sandstone is a whole of an steam hater for rotating the bends in the hater ->  the electric motor in the fan causes the vanes in the fan to move  the electric motor in the fan causes the vanes in the fan to move & an nation of mechanical matter is an preposition in rest ->  the electric motor in the fan causes the vanes to have mechanical energy  the electric motor in the fan causes the vanes to have mechanical energy & an steam settle incidence electrical matter into mechanical matter -> a fan converts electrical energy into mechanical energy