Gravitational and Electric Fields Flashcards
1
Q
State Newton’s Law of Universal Gravitation
A
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 proportional to the square of the distance between their centres
2
Q
weight (Fg)
A
the gravitational force the Earth exerts on any object on or near its surface
3
Q
gravitational field
A
the force acting per unit mass
4
Q
State Coulomb’s law
A
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
5
Q
magnitude of the electric field at a point
A
the force per unit positive charge E= F/q where E and F are vectors
