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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

 

Derived Units

SI units for measuring all other physical quantities are derived from the base and supplementary units. Some of the derived units are given in Table.


Derived units

Physical quantity

Unit

Symbol

In terms of base units

Force

Newton

N

kg m s ˉ²

Work

joule

J

m = kg m² sˉ²

Power

watt

W

J sˉ¹  = kg m² sˉ³

Pressure

Pascal

Pa

N mˉ²  = kg mˉ sˉ²

Electric Charge

coulomb

C

A s

 

 
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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 :
very good notes and easy to understand. i wish u can make more of dem
 
  10/09/14 09:57 PM
   
muhammad fawad Said :
nice writting..
 
  06/05/14 06:47 PM
 

 

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