Gravitational and Electric Fields

Question 1

Newton’s Law of Universal Gravitation

Answer 1

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

Question 2

Gravitational field

g = F/m

Answer 2

a region in space where a mass will experience a force
(the force acting per unit mass)
(gravitational field and acceleration due to gravity are equivalent)
g = GM/r2

Question 3

weight

Answer 3

*

Question 4

Coulomb’s Law

(F = kq1q2/ r2

Answer 4

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

Question 5

Electric field

Answer 5

a 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

Mag of electric field at a point

Answer 6

the force per unit positive charge
(E = F/q)
E and F are vectors