Physics: Electrostatics

When electrons are transferred from one object to another, positive and negative charges are ______

Seperated

Gravitational forces can be neglected on the _____ level

Subatomic

Name a few objects that would allow charge to flow through it

steel house key, a strip of aluminum foil, metal paper clip, copper, graphite

Insulators are different than conductors because

they do not allow charge to freely move

Universal Gravitation

(6.67x10^-11)

Electrons ___ move

Can

K=____

(9x10^9)

Define Conductor

Materials that allow the free flow of electrons to flow from particle to particle

Define Insulator

Materials that do not allow the free flow of electrons from atom to atom or molecule to molecule

Electrons are ___

Negatively Charged

Neutrons are ___

Neutral, net charge is zero

Can there be static cling if there are only cotton items in the dryer?

No

Protons and neutrons are located in the _______. Electrons are on the _______.

Nucleus, outside

Protons are ___

Positively Charged

Charging by Conduction

A charged object can be used to charge a neutral object by touching it

Charging by Induction

A charged object can be used to charge a neutral object without touching it

Define Static Electricity

A stationary electric charge built up on an insulating material

A neutral object will _____ be attracted to a charged object

Always

Opposites ________, Like charges __________

Attract, Repel

Protons ___ move

Can't

Force and Charge have a ____ relationship

Direct

Electric force is a vector quantity because it has magnitude and _____

Direction

TRUE OR FALSE: Conductors cannot be charged by frictional rubbing

False, as long as you were insulating gloves

A balloon is charged by being rubbed by animal fur, then it is pressed against a wooden cabinet. The balloon and cabinet attract, and seem to defy the force of gravity. Describe the attraction. What type of object is it most noticed by?

It is best explained by the polarization of the wood molecules, it is most noticed by insulators

Define Polarization

The process of separating opposite charges in an object

Why do socks and other pieces of clothing stick together after being tumbled in a dryer?

The strong heat and rapid movement of the dryer cause static electricity and static cling