A straight, rectangular cross-sectional fin [k=200w/mdegrees celcius] 3.0 mm thick and 7.5 cm long protrudes from a flat surface.The base of the fin is maintained at 300 celcius and the ambient temperature is 50 celcius. The convection coefficient on all surfaces is h= 10 W/m^2-C. Calculate the heat loss from each fin per unit depth of material