Coulomb's Law - MIDTERM Physics

Electron; Up quark; Down quark; Neutrino

Enumerate four (4) fundamental particles:

2 up quarks and 1 down quark

A proton consists of:

2 down quarks and 1 up quark

A neutron consists of:

Neutrino (A little neutron)

- Zero charge nearly zero mass

- Moves at a speed of light and pass through almost anything

Gravity; Weak nuclear; Strong nuclear; Electromagnetic

Enumerate four (4) forces of nature:

Gravity

Invisible force that pulls individual or objects towards the

center of the earth.

Weak nuclear

Force that happen to atom undergo radioactive

decay.

Strong nuclear

Forces that holds protons and neutrons in the nucleus.

Electromagnetic

Combined electricity and magnetism.

Electrostatic force/Electric force

There is a force acting on both objects causing them to either move away from each other or go together.

Charles-Augustin De Couloumb

He measured the magnitude of the electric force between charges objects at rest.

Charles-Augustin De Couloumb

He is very famous for his experiment of torsion balance where he discovered the force of attraction and repulsion between two charges.

Equal

In a neutral atom, the total number of electron atoms is always _____ to the total number of proton.

Ion

When an atom loses or accept an electron, the atom becomes positively or negatively charge also known as _____.

Net electric charge

The total charge found in an electric system.

-1.602 X 10⁻¹⁹ C

The charge in a single electron is:

+1.602 X 10⁻¹⁹ C

The charge in a single proton is:

Coulomb's Law

States that the electrostatic force is directly proportional to the product of the amount of charge on the objects and inversely proportional to the square of the separation distance between the two objects.

F = k⋅q₁q₂/r²

State the formula for Coulomb's Law:

F

Electrostatic force (Newtons)

k

Coulomb's constant

8.99 X 10⁹Nm²/C²

k = _____

q₁ and q₂

Charge (Coulomb)

r²

Distance between two charges (meter)

= 1 × 10^-6 C

1 µC

= 1 × 10^-9 C

1 nC

= 1 × 10^-12

pC

anion

negatively charged ion

cation

positively charged ion