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