laws of thermodynamics thermodynamics. laws of thermodynamics thermodynamics – the study of heat...
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Laws of thermodynamics
Thermodynamics
Laws of thermodynamics
Thermodynamics – the study of heat and its conversion into mechanical energy
Laws of thermodynamics
Absolute zero
Laws of thermodynamics
Absolute zero – a theoretical temperature that cannot be attained in real life.
Laws of thermodynamics
Absolute zero – is value is 0K on the kelvin scale, and negative two hundred and seventy three degrees on the Celsius scale. (-273oC)
Laws of thermodynamics
Temperature conversionsK=TC+273TC=K-273
Laws of thermodynamicsFirst Law of ThermodynamicsHeat added = change in internal energy + external work done by the system
Laws of thermodynamicsFirst Law of ThermodynamicsQ= DE + W
Heatadded
Change in internal energy
External work done by or on the system.
Laws of thermodynamicsExample – A system consisting of a cylinder an piston has 1000J of energy added to it. The system does 250 J of external work. What was the change in the internal energy of the system.
Laws of thermodynamics
Q= DE + WDE =Q-W=1000-250=750J