ch32_jcms

**//32.1: Electrical Forces and Charges//**
 * //Chapter 32: Electrostatics//**
 * Electrical charges have a force acting between that is similar to the force acting between two masses.
 * An electrical force can be attractive or repulsive unlike gravity
 * Charges with like signs will repel each other and charges with opposite signs will attract each other.
 * //32.2: Conservation of Charge//**
 * Conservation of charge states that the total amount of charge both positive and negative is constant.
 * Charge cannot be created or destroyed and can only be transferred from one object to another.
 * If one object is given a positive charge something else must be given a negative charge of the same magnitude.
 * //32.3: Coulomb’s Law//**
 * F=kC*q1q2/d2
 * Coulombs constant: kC = 9.0 * 109 N * m2/ C2
 * The direction of the force will be toward the other charge if the charges have opposite signs and away from each other if they have the same sign.
 * //32.4: Conductors and Insulators//**
 * Some materials allow electrons to move easily and others restrict the movement of electrons
 * Materials that allow electrons to move freely are called conductors
 * Materials that restrict the movement of electrons are called insulators
 * Examples of conductors are metals; some examples of insulators include plastic, rubber and wood.
 * //32.5: Charging by Friction and Contact//**
 * Objects can become electrically charged through contact
 * By rubbing together two dissimilar objects some of the electrons from one object will be drawn to the other.
 * //32.6: Charging by Induction//**
 * Using an already charged object to charge another without contact is called induction
 * This can be done by taking a rubber rod near the object to be charged
 * Allow the displaced charge to drain off on the other side
 * Removing the drain while the charged object remains
 * Removing the original charged object leaving the induced charge
 * //32.7: Charge Polarization//**
 * When an insulator is brought near a charged object the charges in the insulator will rearrange so that all the negative charges will be on one side and all the positive charges will be on the other
 * This causes the object to be electrically polarized
 * This will not change the net charge of the insulator but it will allow a small or light object to be lifted by a charged object.