Thermal physics Flashcards
1
Q
What is the specific latent heat of fusion
A
The amount of energy needed to change 1kg of it from solid to liquid without a change in temperature
2
Q
What is specific latent heat of vaporisation
A
The amount of energy needed to change 1kg of it from liquid to gas without a change in temperature
3
Q
Specific latent heat equation
A
Q=ml
l - specific latent heat of fusion or vaporisation
4
Q
The total number of molecules in a substance in a sample of known mass is
A
N= n x NA
N = m x NA / mr
n = m/ mr
5
Q
What is Brownian motion
A
random motion of particles suspended in a fluid
6
Q
What does BM show
A
particles are in a straight line and have a constant random motion
