6. Energy Flashcards
1
Q
The 6 energy stores
A
- Elastic Potential store
- Kinetic store
- Internal store
- Gravitational store
- Chemical store
- Nuclear store
2
Q
4 ways energy is being transferred
A
- Mechanically over a distance
- Heating due to temperature difference
- Propagation of waves
- Electric current
3
Q
How to calculate energy in kinetic store ?
A
1/2 (mass) (speed)^2
4
Q
How to calculate energy in gravitational potential store?
A
(mass) (Gravitational field strength) (height)
5
Q
Principle of conservation of energy
A
- Energy cannot be created or destroyed
- Energy can be transferred from one store to another
- Total energy of an isolated system stays constant
6
Q
How to calculate work done
A
work done= force x distance
7
Q
How to calculate power?
A
1.Power= work done /time
2. Power= Energy/ time
