the ratio between the weight of a substance and the weight of the same volume of water is known as specific weight this is a property that results in a dimensionless number since it consists of dividing the weight of a fluid by the weight of water in a same volume
load every electric circuit,regardless of where it is or how large or small, has four basic parts: an energy source (ac or dc),a conductor (wire), an electrical load (device), and at least one controller(switch)
