Useful Information For thermodynamic section use the following information R, kJ/kg K Gas Cp, kJ/kg K Cr, kJ/kg K Air 0.287 1.005 0.717 0.7425 Nitrogen carbon dioxide 0.297 1.0395 0. 19 0.76 0.57 One dimensional General conduction equation at] Cartesian co- ordinates, conduction in x direction k + q" a pCt ax Cylindrical co-ordinates, conduction in r direction 1 a kr + q" pCt r ar ar Spherical co-ordinates, conduction r direction 1 a at kr2 ar + q"" pCt 12 ar 4-An electronic element in a form of a flat wall 1 cm thickness generates heat internally at a rate of 0.4 MIW/m'. One side of the electronic element is exposed to an environment at 30 C, with convection heat transfer coefficient between the surface and the environment is 70 W/m'K. The other side of the element is perfect insulated. The thermal conductivity of the electronic element material is 20 W/mk. Calculate: a) The maximum temperature in the electronic element. b) The heat flux at both sides.