F=K(q1q2/r^2)
Math
PROPORTIONALITY
VOCABULARY
ATTRACTION vs. REPULSION
100

The electrostatic force between a 1.0 C charge and a 1.0 C charge separated by a distance of 1.0 m.

What is 9.0×109 N?

100

If you double the distance between two charged objects, the new force is this fraction of the original force.

What is one-fourth?

100

The action when two things have the same charge sign. 2. Two negative objects do this to each other. 3. This causes things to move away from each other.

What is REPEL (or Repulsion)?

100

The required polarity of two charges (e.g., q1 and q2) to result in an attractive force.

What is Opposite (or Positive and Negative)?

200

The force between q1=3.0×10^−6 C and q2=2.0×10^-6 C when they are separated by 1.0 m.

What is 0.054 N?

200

If you take one charge and double its magnitude, the new force is this many times the original force.

What is two times? (or double)

200

The push or pull between charges. 2. This is measured in units of Newtons. 3. It's the final answer when you multiply q and divide by r2.

What is ELECTRIC FORCE?

200

The physical action that occurs between two positively charged particles.

What is Repulsion (or They Repel)?

300

The value of two identical charges (q1=q2) that are 1.0 m apart and exert a repulsive force of 0.090 N on each other.

What is 1.0×10^−5 C?

300

If you cut the distance between two charges in half, the new force is this many times the original force.

What is four times?

300

If you double the distance, the force is four times weaker. 2. A relationship where one value goes up while the other goes down very fast. 3. This part of the law is very similar to gravity's rules.

What is INVERSE SQUARE?

300

The resulting net force on a positive charge placed exactly halfway between two identical negative charges.

What is Zero?

400

The distance separating a 2.0 C charge and a 1.0 C charge if the force between them is 2.0×10^9 N.

What is 3.0 m?

400

If you reduce both charges to one-half of their original value, the new force is this fraction of the original force.

What is one-fourth?

400

A fundamental property of matter that causes forces. 2. It can be positive or negative. 3. The amount is symbolized by the letter q in the formula.

What is CHARGE?

400

The direction of the net force on a negative charge placed near a large positive charge and a small positive charge.

What is Toward the large positive charge?

500

The unknown charge q2 if q1=1.0×10^−6 C, r=1.0 m, and F=0.045 N.

What is 5.0×10^−6 C?

500

If you double the distance AND double both charges, the force changes by this factor.

What is one time? (or stays the same)

500

It is the core rule that governs the Electric Force. 2. It helps you calculate how strong the push or pull is. 3. It's the entire physics principle we are studying today.

What is COULOMB'S LAW?

500

The term for why a neutral object, like a wall, is temporarily attracted to a charged balloon.

What is Polarization?

M
e
n
u