Electrostatics

Charges repel symbol

+

Changes attract symbol

-

If I double the distance between two charges the electrostatic force will become ____ times as big.

0.25

Objects 1 and 2 attract each other with a electrostatic force of 18.0 N. If the charge of Object 1 is doubled AND the charge of object 2 is tripled, then the new electrostatic force will be _____ N.

108

Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is doubled AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.

1728

Objects 1 and 2 attract each other with a electrostatic force of 18.0 N. If the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ N.

2

Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is one-fourth the original value AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.

216

Objects 1 and 2 attract each other with a electrostatic force of 18.0 N. If the charge of Object 1 is halved AND the charge of object 2 is tripled, then the new electrostatic force will be _____ N.

27

Objects 1 and 2 attract each other with a electrostatic force of 18.0 N. If the charge of Object 1 is doubled, then the new electrostatic force will be _____ N.

36

Objects 1 and 2 attract each other with a electrostatic force of 18.0 N. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ N.

4

Objects 1 and 2 attract each other with a electrostatic force of 18.0 N. If the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ N.

4.5

Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is one-third the original value AND the charge of object 2 is doubled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

6

Objects 1 and 2 attract each other with a electrostatic force of 36.0 N. If the charge of Object 1 is doubled, then the new electrostatic force will be _____ N.

72

The Coulomb constant is

8.99 x 10^9

Objects 1 and 2 attract each other with a electrostatic force of 36.0 N. If the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ N.

9

Suppose that two point charges, each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter. Determine the magnitude of the electrical force of repulsion between them.

9000000000

Insulator of electricity

A material in which electrons are not able to move easily

A charged object and neutral object will

Attract

opposite charges

Attract

What objects interact with one another

Charged

When two objects of different materials are rubbed together

Charging by friction- one pos charge, one neg charge They will attract each other after charging process The total amount of charge among the two objects remains unchanged

Charge is measured in

Coulombs

The amount of charge --- affect the strength of the force.

DOES

Polarization

Division into two opposite positions

Negative charged object

E>p

An object can only lose or gain

Electrons

What causes static cling

Electrons are transferred from one object to another

How many protons and electrons are in an electrically neutral atom

Equal

How are objects charged?

Gaining or losing electrons

Charged object is an

Imbalance of these subatomic particles

Protons reside

In the nucleus, tightly bound (never leave an atom in an electrostatic procedure)

Triboelectric Series transfer

Less charge hungry object (+) to more charge hungry object (-)

Can you gain protons?

NO

Energy constant units

Nm^2/C^2

Positive charged object

P>e

Coloumb's Law

Refers to attractive force between any two charged particles

Like charges

Repel

conductor of electricity

Substance that allows electricity to pass through it easily.

The passage states that when two objects are rubbed together, there is a transfer of electrons. What seems to be the important variable in determining which object acquires the transferred electrons?

The relative affinity that each object has for electrons.

net charge

The sum of negative and positive charges.

Protons are never transferred because

They are tightly bound within the nucleus of an atom

When two objects are rubbed together

They will both acquire a charge

Electrons get transferred

To the more electronloving object

Object A - the balloon - is made of vinyl. How does the electron affinity of vinyl compare to that of animal fur?

Vinyl has a greater affinity for electrons than animal fur.

Triboelectric Series

a list of materials that shows what materials are most likely to become positive or negative

conduction (electrical)

a method of charging an object that occurs when electrons are transferred from one object to another by direct contact

affinity

an attraction to

electrically neutral

an object that has equal amounts of positive and negative charges

The electrostatic force depends on

charge of first and second object, distance

charged by friction

charged by rubbing two objects together

Charge is always

conserved

The more charged an object is, the ----- the attractive/repulsive force.

greater

picture of an atom

https://img.purch.com/w/640/aHR0cDovL3d3dy5saXZlc2NpZW5jZS5jb20vaW1hZ2VzL2kvMDAwLzA1My81MzgvaTAyL2F0b20tc3RydWN0dXJlLmpwZz8xMzcwNDcyMzY1

Law of Electrostatics

like charges repel, unlike charges attract

Electrons charge

negative

What charge does neutrons have

no charge / neutral

Where are nuetrons located?

nucleus with protons

Where are electrons located?

outside the nucleus in the electron cloud (easily removed and added from atoms)

Protons charge

positive

Atoms contain

protons, neutrons, electrons

The greater the distance two charged objects are, the ----- the force.

smaller

The symbol d in Coulomb's law equation represents the distance from ___.

the center to one object to the center of the other

The Q in Coulomb's law equation stands for the _____.

the charge of a charged object

electrostatic force is a ---- quantity

vector