One end of a copper rod of length 1 m and area of cross-section 4.0×10−4 m2 is maintained at 100∘C. At the other end of the rod ice is kept at 0∘C. Neglecting the loss of heat from the surroundings, find the mass of ice melted in 1 h. Given, KCu=401 W/m⋅K and Lf=3.35×105 J/kg .