si derived units

S.I. Units - The value of any physical quantity is always expressed as its numerical value as well as a unit. One often hears the weight expressed as grams or kilograms; the distance as foot, yard or mile; the volume as litres or gallons. The use of a number of un..

It is a new system introduced by General Conference of Weights and Measures in 1960. It is called "Le Systeme International d' Unites..

Quantity Derivation of the Quantity SI Unit Symbol Area Length square m 2 Volume Length cube m 3 Density Mass per unit volume kg m -3 Speed Distance travelled per unit time m S -..

SI Unit of Work - W = F x S SI unit of F is N and that of S is m [N = newto..

W = F x S SI unit of F is N and that of S is m [N = newto..

W = F x s SI unit of F is N and that of s is m [N=Newton] 1Nm is defined as 1 joule. i.e., 1 joule = 1..

Physical Quantity Name of the Unit Symbol Length meter m Mass kilogram kg Time second s Temperature kelvin K Electric current ampere A Luminous intensity candela cd Amount of substance mole mol Usually all small measurements are express..

One joule is the work done when the point of application of a force of one newton moves through a distance of one metre in the direction of forc..

The units of all physical quantities can be derived from the seven basic units. These units are called derived units because they can be derived from the basic units algebraically by multiplication and division. It is f..

Prefixes are used for large and small quantities. The following table gives prefixes, their symbol and their values in powers of 10 used in SI units..