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Rev. Notes > AS > Physical quantities and units
 
 
Previous Topic Physical quantities and units Next Topic

Topics
 

Physics

Areas of Physics

Interdisciplanary areas of physics

Quantities in Physics

Base Units

Convention for indicating units

Derived Units

S.I. Units (International System of Units)

Supplementary units

Homogeneity of equations

Significant figures

Rules of Significant figures

Further discussion on Significant figures

Dimensions

Scientific notation

The Avogadro's Constant

Scalars and Vectors

Addition and subtraction of co-planar vectors

Rectangular components of a vector

 

Base Units

There are seven base units for various physical quantities namely: length, mass time, temperature, electric current luminous intensity and amount of substance (with special reference to the number of particles).

Quantity

Unit

Symbol of unit

Mass

kilogram

kg

Distance

metre

m

Time

second

s

Electric Current

ampere

A

Thermodynamic temperature

Kelvin

K

Quantity of substance

mole

mol

Luminous intensity

candela

cd

 

Note:

First five base units mass, distance, time, electric current and thermodunamic temperature are teh parts of AS physics, while the remaining two base units are included in A2 (second year of A Level)

 

 
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View Comments on this Chapter - Total Comments (4)
 
Student Said :

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  11/07/15 09:09 AM
   
Kennyworthy Mphande Said :
nicely explained.
 
  26/01/15 07:00 PM
   
benard wilson Said :
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  10/09/14 09:57 PM
   
muhammad fawad Said :
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  06/05/14 06:47 PM
 

 

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