Most Energy Transfers Involve Some Losses, Often by Heating Flashcards
1
Q
Energy is only useful when it is…
A
Transferred from one store to a useful store
2
Q
What always happens to some of the input energy?
A
It is lost or wasted, often to thermal energy stores by heating
3
Q
What does the law of conservation mean?
A
Total energy input = useful energy output + wasted energy
4
Q
The less energy that’s wasted…
A
The more efficient the device is said to be
