First and second laws, heat engines, refrigerators, Carnot cycle.
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Q1 · Thermodynamics (1st PUC) · MEDIUM
An ideal gas undergoes a cyclic process ABCA as shown. The work done by the gas in the complete cycle is 600 J. If heat absorbed along AB is 1200 J and heat rejected along CA is 800 J, the heat exchanged along BC is:
Q2 · Thermodynamics (1st PUC) · EASY
One mole of an ideal gas at 400 K is heated at constant pressure until its volume doubles. If R = 8.3 J/(mol·K), the work done by the gas is: