A fuel rod of UO2 (k=1.866 Btu/hr-ft-F) has a diameter of 0.4 inches and is clad with 0.150 inch 304 stainless steel (k=11 Btu/hr-ft-F). The rod is to develop 7.5 kW/ft at the point under consideration. The outside film coefficient is 1500 Btu (hr-ft2-F) and the boiling water has a temperature of 600F. Calculate: (a) the heat flux at the fuel surface and (b) the temperature at the center of the rod