3.3 Flashcards
1
Q
Work
A
Energy transferred, product of the force and the distance moved by the force in the direction of movement
2
Q
Closed system
A
A system in which all the energy transferred is accounted for - energy cannot enter or leave the system
3
Q
Principle of conservation of energy
A
Total energy of a closed system remains constant.
Energy cannot be created or destroyed, only transferred from one form to another
4
Q
Power
A
The rate of doing work -rate at which energy is transferred from one form to another
5
Q
Efficiency
A
(Useful output energy / total input energy) *100%
