7.1 Fields Flashcards
1
Q
What is a force field?
A
A region in which an object experiences a non-contact force.
2
Q
What does the distance between field lines tell us?
A
That the field strength or stength of the force extered by the field.
(Close=stronger, far apart=weaker)
3
Q
What interactions form force fields?
A
- Masses for gravity
- Static charge for electric
- Moving charges for magnetic
4
Q
What are the similarities between gravitational and electrical forces?
A
- Inverse-square force laws
- Use field lines to be depicted
- Potentials
- Equipotential surfaces
5
Q
What are the differences between gravitational and electrical forces?
A
- Masses only attract
- Electric charges can repel or attract
