Gravitational & Electric Fields & Electrostatics Definitions

Question 1

Newton’s Law of Universal Gravitation

Answer 1

Every particle in the universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres

Question 2

weight (Fg)

Answer 2

the gravitational force the earth exerts on any object on or near its surface

Question 3

gravitational field

Answer 3

force acting per unit mass

Question 4

Coulomb’s Law

Answer 4

the force between two charges is directly proportional to the product of the charges and inversely proportional to the distance between the charges squared

Question 5

electric field

Answer 5

region of space in which an electric charge experiences a force. The direction of the electric field at a point is the direction that a positive test charge would move if placed at that point

Question 6

magnitude of an electric field at a point

Answer 6

the force per unit positive charge