Latent heat + Effeciency Equation Flashcards
1
Q
What are the two specific latent heats?
A
Latent heat of fusion and latent heat of vapourisation
2
Q
What is the latent heat of fusion?
A
Latent heat of fusion is the amount of energy needed to freeze or melt a substance at its melting point
3
Q
What is the latent heat of vapourisation?
A
Latent heat of vapourisation is the amount of energy needed to evaporate or condense a substance at its boiling point
4
Q
How do you work out thermal energy for a change in state?
A
Thermal energy for a change in state = mass x specific latent heat
5
Q
How do you work out effeciency?
A
Effeciency = Useful energy output divided by total energy input
