initial commit / add all books

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+clc;

+TA=323;// Temperature at section A in kelvin

+PA=125; // Pressure at section A in kPa

+TB=287;// Temperature at section B in kelvin

+PB=100; // Pressure at section B in kPa

+Cpo=1.0035; // Specific heat at constant pressure in kJ/kg K

+R=0.287; // characteristic gas constant of air in kJ/kg K

+SBA=(Cpo*log (TB/TA))-(R*log (PB/PA)); // Change in entropy

+disp("Hence SA>SB. Therefore B to A","kJ/kg",SBA,"Change in entropy from B to A =");