Thermodynamics

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A PowerPoint Presentation about the first and second Law of Thermodyanamics

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Thermodynamics

  1. 1. First Law and ofPhysi csTeachin g Demo Presented by: Melchor J.
  2. 2. First Law and ofPhysi csTeachin g Demo Presented by: Melchor J.
  3. 3. Review • Thermodynamics- can be defined as the science of energy. • Energy - can be viewed as the ability to cause changes.
  4. 4. Review Law of Conservation of Energy- states that during an interaction, energy can change from one form to another but the total amount of energy remains constant.
  5. 5. First Law of Thermodynamics
  6. 6. First Law of Thermodynamics• The First Law states that energy cannot be created nor destroyed; rather, the amount of energy lost in a steady state process cannot be greater than the amount of energy gained.
  7. 7. First Law of ThermodynamicsExampleFigure 1. Conservation of Energy for the Human Body
  8. 8. First Law of Thermodynamics• The change in internal energy of the system during any thermodynamic process depends only on the initial and final states, not on the path leading from one to the other.
  9. 9. Second Law of Thermodynamics“Heat can spontaneously flow from a higher-temperature region to a lower- temperature region, but not the other way around."
  10. 10. Second Law of Thermodynamics Where: ΔS - change in entropy ΔQ – change in heat T - Period
  11. 11. ExampleFigure 2. Heat flows in the direction of decreasing temperature.
  12. 12. Thank You!!!

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