Fields

Question 1

Newton’s Law of Universal Gravitation

Answer 1

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

Question 2

Gravitational field strength

Answer 2

The force acting per unit mass

Question 3

Weight

Answer 3

The gravitational force the earth exerts on an object on or near its surface

Question 4

Mass

Answer 4

The amount of matter which an object consists of

Question 5

Coulomb’s Law

Answer 5

Two point charges in free space or air exert forces on each other. The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between the charges

Question 6

Electrical Field

Answer 6

A region of space in which an electrical charge experiences a force. The direction of the electrical field at a point is the direction that a positive test charge would move when places at that point

Question 7

Electric field strength

Answer 7

The force per unit positive charge