Section 9 - Gravitational and Electric Fields Flashcards
1
Q
Is the force in a field contact or non-contanct?
A
Non-contact
2
Q
Is force a vecotr or scalar quantity?
A
Vector
3
Q
What are the similarities between electrostatic and gravitational forces?
A
- Inverse swaure force laws
- Potential concept
- Equipotential surfaces
- Use of field lines
4
Q
A
5
Q
What are some differences between electrostatic and gravitational forces?
A
The gravitational forces from masses always attract, whilst charges may repel or attract
6
Q
What is gravity?
A
The universal attractive force which acts between all matter
7
Q
What is G?
A
The universal gravitational constant
8
Q
What can field lines tell you about a field?
A
The direction of the field and the strength of the field depending on the density of the field lines
9
Q
A
10
Q
What is g?
A
- The force per unit area in a uniform field
- In a radial field the magnitude of g is the proportionality constant at that point between force and mass
11
Q
A
