Coulomb's Law

After watching this video you should be able to do the following:
*Know how to apply the Coulomb's law equation
*Understand how changing aspects of the Coulomb's law equation affects the force between two point charges
*Understand how the force each particle exerts on the other particle is related to Newton's third law
*Understand how the permittivity of a media affects the force and electric field strength
*Calculate values of k for media which are not in a vacuum