55. Heat the engine runs on a cycle consisting of isothermal, isobaric and adiabatic processes. With isobaric process the working medium - the air mass of 6 kg is heated by the temperature T1 = 61 K to a temperature of 418 K. The change in the entropy of the working substance in the isothermal compression.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)