AP Physics B - Thermo

Card Set Information

Author:
CCQuizbowl
ID:
150039
Filename:
AP Physics B - Thermo
Updated:
2012-04-25 11:22:47
Tags:
thermodynamics
Folders:

Description:
Thermodynamics
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user CCQuizbowl on FreezingBlue Flashcards. What would you like to do?


  1. Kelvin conversion
  2. Heat transfer equation
  3. Heat necessary for phase change
    • L is the latent heat of the phase change
  4. Linear expansion
  5. Volume expansion
  6. Heat transfer rate
    • k is the thermal conductivity, A is cross-sct area, L is length, T is temp. difference between two sides
  7. Ideal gas law
    • KELVINS
  8. Boltzmann's constant
  9. average kinetic energy of ideal gas
    • KELVINS
  10. root-mean-square speed
    • KELVINS
    • M is molar mass (in kg), mu is molecular mass
  11. Liter
    0.001 cubic meters
  12. Ideal gas at STP
    22.4 L at 1 atm and 273 K
  13. Zeroth law of thermodynamics
    • Transitive property of thermal equilibrium
    • Heat flow = 0 in closed systems
  14. Work done by ideal gas (heat must be removed)
    • Positive when work is done on system, negative when system does work
  15. Work when pressure changes
    • Area under P-V curve
    • Increasing volume gives negative work, decreasing volume gives positive work
  16. First law of thermo
    • No phase changes.
    • For constant volume, W=0 and
  17. Isochoric process
    • No change in volume
    • Change in internal energy due entirely to heat transfer
  18. Isothermal process
    No temperature changes
  19. Adiabatic process
    Q = 0
  20. Efficiency of heat engines
    • Q_H is heat energy discarded
  21. Carnot cycle
    1. Isothermal expansion (absorbs heat from high-energy source and expands; because temp doesn't increase, all heat goes into work performed by expanding gas)

    2. Adiabatic expansion (system expands w/o exchanging heat w/ surroundings; it thus does negative work, so its internal energy and temperature decrease)

    3. Isothermal compression - environment does work on gas, and it discards heat to low-temperature reservoir rather than increasing internal energy

    4. Adiabatic compression - system compressed to initial state with no heat exchange, so its internal energy and temp increase
  22. Carnot efficiency
    • KELVINS

What would you like to do?

Home > Flashcards > Print Preview