10. A cooling fin of square cross-sectional area A = 0.25 x 0.25 m2, length L = 2m, and conduc¬

tivity k = 10 W/m/°C extends from a wall maintained at temperature Tw = 100oC. The surface convection coefficient between the fin and the surrounding air is h = 0.5 W/m2/°C, and the air temperature is Ta = 20oC. Determine the heat conducted by the fin and the temperature of tip using five one-dimensional finite elements.