1 to 30 Dimensional formulas named with symbols
Answers
Explanation:
This is a list of physical quantities.
The first table lists the base quantities used in the International System of Units to define the physical dimension of physical quantities for dimensional analysis. The second table lists the derived physical quantities. Derived quantities can be mentioned in terms of the base quantities.
Note that neither the names nor the symbols used for the physical quantities are international standards. Some quantities are known as several different names such as the magnetic B-field which known as the magnetic flux density, the magnetic induction or simply as the magnetic field depending on the context. Similarly, surface tension can be denoted by either σ, γ or T. The table usually lists only one name and symbol.
The final column lists some special properties that some of the quantities have, such as their scaling behavior (i.e. whether the quantity is intensive or extensive), their transformation properties (i.e. whether the quantity is a scalar, vector or tensor), and whether the quantity is conserved.
Base quantity Symbol Description SI base unit Dimension Comments
Length l The one-dimensional extent of an object metre (m) L extensive
Mass m A measure of resistance to acceleration kilogram (kg) M extensive, scalar
Time t The duration of an event second (s) T scalar
Electric Current I Rate of flow of electrical charge per unit time ampere (A) I extensive
Temperature T Average kinetic energy per degree of freedom of a system kelvin (K) Θ intensive, scalar
Amount of substance n The quantity proportional to the number of particles in a sample, with the Avogadro constant as the proportionality constant mole (mol) N extensive, scalar
Luminous intensity Iv Wavelength-weighted power of emitted light per unit solid