3. P Pressure, T Temperature, v specific volume, u internal energy, h enthalpy and x quality. In the problems below, two of the aforementioned properties are given. Find/calculate the others, and indicate the phase in Pv and Tv diagram. a. Water at 5000kPa,u=1000kJ/kg [5 points] b. R-134a at 20C,u=300kJ/kg [5 points] c. Nitrogen at 250K,200kPa [5 points] [Total 15 points]