7 Fields and their consequences

Question 1

Force Field

Answer 1

Any region of space where a body will experience a non contact force.

Question 2

Gravitational Field

Answer 2

A region of space where a mass experiences a force due to the gravitational attraction to another mass

Question 3

Newton’s Law of gravitation

Answer 3

The gravitational force between two point masses is proportional to the product of their masses and inversely proportional to the square of their separation.

Question 4

Gravitational Potential

Answer 4

The work done per unit mass in bringing a test mass from infinity to a point

Question 5

Escape Velocity

Answer 5

The minimum speed that will allow an object to escape a gravitational field with no additional energy input

Question 6

Synchronous orbits

Answer 6

When an orbiting body has a time period equal to that of the body being orbited and in the same direction of rotation.

Question 7

Coulomb’s Law

Answer 7

The electrostatic force between two point charges is directly proportional to the product of their masses and inversely proportional to the square of their separation.

Question 8

Electric Field Strength

Answer 8

The force per unit charge experienced by a small positive test charge placed at that point

Question 9

Electric Potential

Answer 9

The work done per unit charge in taking a small positive test mass from infinity to a point.