Recent content by kawf

sorry for my half asleep attempt... so after multiplying the steam mass buy each of the energies would I just take the difference? such that: m*e2 - m*e1 (5kg)(2500 kJ/kg) - (5kg)(3000kJ/kg) = -2500 kJ

Homework Statement A mass of 5 kg of steam is contained within a piston cylinder assembly. The steam undergoes an expansion from its initial state with e1 = 3000 kJ/kg to its final state with e2 = 2500 kJ/kg. During the process there is a heat transfer of 80 kJ to the steam. Also, a paddle...

Homework Statement A mass of 5 kg of steam is contained within a piston cylinder assembly. The steam undergoes an expansion from its initial state with e1 = 3000 kJ/kg to its final state with e2 = 2500 kJ/kg. During the process there is a heat transfer of 80 kJ to the steam. Also, a paddle...

Homework Statement A mass of 5 kg of steam is contained within a piston cylinder assembly. The steam undergoes an expansion from its initial state with e1 = 3000 kJ/kg to its final state with e2 = 2500 kJ/kg. During the process there is a heat transfer of 80 kJ to the steam. Also, a paddle...

Homework Statement Calculate the pressure and density of nitrogen at which there is a 15% error in the ideal gas equation of state for a plane flying in air of temperature 250 K Homework Equations P = rho RT Pv = RT The Attempt at a Solution Little confused on how to approach the problem...