# Thermodynamics

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 Author: ThomasCupis ID: 261697 Filename: Thermodynamics Updated: 2014-02-14 21:08:59 Tags: Thermal Physics Folders: Description: Thermal Physics Show Answers:

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1. Zeroth Law of Thermodynamics
If bodies A and B are each in thermal equilibrium with a third body T, then A and B are in thermal equilibrium with each other.
2. Triple Point of Water
Liquid water, solid ice and water vapor can coexist in thermal equilibrium at only one set of values for pressure and temperature.

3. SI unit for pressure and relations to other common units
Pascal

4. Absolute Zero
0 K=-273.15°C=-459.67°F
5. Freezing Point of Water
273.15K=O°C=32°F
6. Boiling Point of Water
373.15K=100°C=212°F
7. Kelvin to Celsius
8. Celsius to Kelvin
9. Celsius to Fahrenheit
10. Linear Expansion
If the temperature of a metal rod is raised by an amount ΔT, its length increases by

,

where  is the coefficient of linear expansion
11. Volume Expansion
If the temperature of a solid or liquid is raised by an amount ΔT, its volume is increases by

,

where  is the coefficient of volume expansion.
12. Areal Expansion
,

where  is the coefficient of Areal expansion.
13. SI unit for Heat and relations to other common units
1 calorie=4.1868J

14. Heat Capacity
Is the proportionality constant between the heat that the object absorbs or loses and the resulting temperature change of the object,

Q=CΔT
15. Specific Heat
"heat capacity per unit mass"

Q=cmΔT
16. Mole
elementary units
17. Molar Specific Heat
When quantities are expressed in moles, specific heat must also involve moles (rather then a mass unit).
18. Heat of Transformation
The amount of energy per unit mass that must be transferred as heat when a sample completely undergoes a phase change.

Q=Lm
19. Heat of Vaporization
When the phase changes is from liquid to gas or from gas to liquid.

For water:
20. Heat of Fusion
When the phase changes is from solid to liquid or from liquid to solid.

For water:
21. Work Associated with Volume Change
The amount of work done by a gas as it expands or contracts is given by

pressure may vary during the volume change.
22. The First Law of Thermodynamics
The principle of conservation of energy,

or

From the first law of thermodynamics,

24. Constant-Volume Processes
From the first law of thermodynamics,

25. Cyclical Processes
From the first law of thermodynamics,

26. Free Expansions
From the first law of thermodynamics,

27. Transfer of Heat Through Conduction
The conduction rate at which energy is conducted through a slab for which one face is at higher temperature and the other lower temperature,

where L is thickness, A is face area and k is the thermal conductivity.
28. Transfer of Heat Through Convection
Occurs when temperature differences cause an energy transfer by motion within a fluid i.e a breeze.
29. Transfer of Heat Through Radiation
Is an energy transfer via the emission of electromagnetic energy i.e. sunlight.
30. Rate at which an object emits energy via thermal radiation,
31. Rate at which an object absorbs energy from its environment,
32. Stefan-Boltzmann Constant
33. SI unit for Work, Energy, Heat
Joule

34. SI units for Power
Watt

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