magnets and magnetic materials. Flashcards
1
Q
what can be said about forces acting on an object moving at a constant velocity?
A
equal and opposite- no resultant force.
2
Q
what are examples of non-contact forces?
A
- gravity.
- electrostatic.
- magnetic.
3
Q
what are examples of magnetic materials?
A
- iron.
- steel.
- nickle.
- cobalt.
4
Q
in a magnet where is the force strongest and why?
A
poles. lines closer together.
5
Q
orientation of magnets: S N next to is a magnetic nail. will it attract or repulse?
A
attract.
6
Q
orientation of magnets: N S next to it is a magentic nail. will it attract or repulse?
A
attract.
7
Q
what is a magnetic field?
A
region around a magnet where a force acts on another or on a magnetic material.
