Vector Quantities Physics 
A vector quantity is defined as a quantity that has both magnitude and direction. To work with vector quantities, one must know the method for representing these quantities. 

Strongest Electro Magnets in the World Video 
The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power... 

Centrifugal Force Equations and Calculator 
Centrifugal Force equations and calculator. When a body of mass rotates about an axis it exerts an outward radial force called centrifugal force upon the axis or any arm or cord from the axis that restrains it from moving in a straight (tangential) line. 

Centripetal Acceleration Equations and Calculator 
Centripetal Acceleration and force equation and calculator defines the distance that is covered and the direction of the movement. Since the velocity vector (the direction) of a body changes when moved in a circle  there is an acceleration. 

