Flashcards in 8 Deck (8)
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1
Q
Work done (in words):
A
Energy transfer, to move an object a certain distance.
2
Q
Work done =
A
Force x distance (in direction of the force.)
3
Q
Power (in words):
A
Energy transfused per second.
4
Q
Power =
A
Work done / time.
5
Q
What are the three non contact forces?
A
- weight
- magnetism
- Electrostatic force.
6
Q
Weight or Gravity:
A
- non contact force
- mass attracts mass
- gravitational field
- proven by the tide.
7
Q
Electrostatic force:
A
- non contact force
- where protons attracts electrons force
- the more charge the more force.
8
Q
Magnetism:
A
- non contact force.
- opposites attract
- some poles repel.