Thermodynamics and Fluids Flashcards
1
Q
Namethe 3 methods of heat transfer
A
conduction: heat transfer through solids in contact
convection: heat transfer through liquid circulation
radiation: heat transfer by emission/absorption of electromagnetic energy
2
Q
What is the ideal gas law?
A
PV=nRT
3
Q
What is the first law of thermodynamics? (heat transfer of energy into the system and work the system does on its surroundings)
A
deltaE = Q - W
Q: heat added to the system
Q>0 when heat is put into the system
Q<0 when heat leaves the system
W: Work done by the system
W >0 when the system does positive work
W<0 when work is done on the system (this is a heat pump)
4
Q
What is the formula for Pressure?
A
P = F(perpendicular to the surface)/A
A: Area
5
Q
Pair = 1 atm = ___kPA
A
100
