Derived Units
Quantity Formula Symbol (SI Unit) Area A=LxB m 2 Volume V=LxBXH m 3 Density D = Mass/Volume kg m - 3 Velocity V = Distance/Time m s -1 Acceleration a = Change in Velocity/Time m -2 Momentum p = mass x velocity Kg ms..
Fundamental and Derived Units
Fundamental and Derived Units - The units of fundamental physical quantities are called fundamental units. They are length, mass and time. These units can neither be derived from one another nor can be resolved into any other ..
Fundamental and Derived Units - The units of fundamental physical quantities are called fundamental units. They are length, mass and time. These units can neither be derived from one another nor can be resolved into any other ..Fundamental and Derived Units The units of fundamental physical quantities are called fundamental units. They are length, mass and time. These units can neither be derived from one another nor can be resolved into any other units. They are independent of one another. h..
The units of fundamental physical quantities are called fundamental units. They are length, mass and time. These units can neither be derived from one another nor can be resolved into any other units. They are independent of one another. h..Measurements
Everything that we use in our daily life is ultimately governed by principles of physics. All gadgets we use everyday at home, bicycles and cars, all different types of machinery and instruments, work on principles of physics. Hence to understand even the elementary working of t..
Summary
International System of (SI) unit has been adopted for measurement by scientists all over the world. Three fundamental units needed in physics are those of lengths, mass and time. Units of all other physical quantities we come across in ..
Note:
a) In the above derivation, we have assumed a unit north pole to be placed at P and that the magnetic field intensity is force experienced by that unit pole. This is the coulombian magnetic force. Where m 1 is pole strength of North Pole of a bar magnet and l repre..
a) In the above derivation, we have assumed a unit north pole to be placed at P and that the magnetic field intensity is force experienced by that unit pole. This is the coulombian magnetic force. Where m 1 is pole strength of North Pole of a bar magnet and l repre..Advantages of Dimensional Analysis
Advantages of Dimensional Analysis - Dimensional equations are used to validate the correctness of a physical equation. Dimensional equations are used to derive correct relationship between different physical quantities. Dimensional equations are used to convert one sy..
Stefan-Boltzmann Law
Stefan-Boltzmann Law - The energy of thermal radiation emitted per unit time by a black body of surface A, is given by u = s AT 2 -----(1) where s is a universal constant known as Stefan-Boltzmann constant and T is its temperature on absolute scale. The measured value of s is 5.67 x 10 - ..
Stefan-Boltzmann Law - The energy of thermal radiation emitted per unit time by a black body of surface A, is given by u = s AT 2 -----(1) where s is a universal constant known as Stefan-Boltzmann constant and T is its temperature on absolute scale. The measured value of s is 5.67 x 10 - ..Vectors - Introduction
; derivations involving these laws are often greatly simplified if this is done. Quantities that can be completely specified by a number and unit and therefore, have magnitude only, are called scalars. Some scalar quantities are mass, length, time, density, energy and temperatur..
Definition of 'Unit'
One unit is the electrical energy consumed by an electrical appliance of power 1 kW when used for 1 ho..
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