The volume at B is twice that at C. The internal energy at A and B are both 8400

Question

The volume at B is twice that at C. The internal energy at A and B are both 8400 J. The internal energy at C is 4200 J. A. What is the work done in the transition A to B? Work = _________ J B. What is the work done in the transition B to C? Work = _________ J C. What is the TOTAL heat going into the gas during the cycle? Heat going into gas = _____________ J D. What is the total work done during the cycle? Work done during cycle = ______________ J E. What is the efficiency of this heat engine? Real efficiency = __________ % F. What is the efficiency of a Carnot cycle running between the lowest and highest temperatures of the cycle ABC? Carnot efficiency = _________ %

Explanation / Answer

process a to b is isothermal and process b to c is isobaric and c to a is isochoric. work done in a to b = 400000*14*10^-3ln2 well the calculations are a quiet rigorous one, i am giving you the pressure and volume at points a , b and c A(400kPa,14*10^-3 m^3,2T) B(200kPa,28*10^-3 m^3,2T) C(200kPa,14*10^-3 m^3,T), hope u will do away with the calculation part. hope my answer is correct and please appreciate my help by awarding me karma points.

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