12 physics 4. Thermodynamics Page 1.

 12 physics  4. Thermodynamics    Page 1.

https://wordwall.net/resource/111631395




Above is the Schematic representation of Zeroth law of thermodynamics.

Case i)

Energy Flows into the system. The system gains energy, and Q is
positive.



Change in internal energy of a system
can be brought about by heating the system.

They does some work on the gas in moving it through some distance, gas gains energy & its temperature increases . On the other hand , gas pushes the piston out, some work is done by gas ,it looses energy & its temperature decreases.





 The first law of thermodynamics is thus a generalization of the law of conservation of energy.


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