To defog the rear window of an automobile, a very thin transparent heating element is attached to the inner surface of the window. A unform heat flux of 1300 W/m^2 is provided to the heating element for defogging the rear window of thickness 5 mm. The interior temperature of the automobile is 22 C and the convection heat transfer coefficient is 15 W/m^2K. The outside ambient temperature is -5 C and the convection heat transfer coefficient is 100 W/m^2K. If the thermal conductivity of the window is 1.2 W/mK, determine the inner surface temperature of the window.