Rods of copper, brass, and steel are welded together to form a Y-Shaped figure. The cross-sectional area of each rod is 2 cm2. The free end of copper rod is maintained at 100 C, and the free ends of the brass and steel rods at 0 C. Suppose that there is no heat loss from the surfaces of the rods. The lengths of the rods are: copper, 13 centimeter; brass, 18 centimeter; steel, 24 centimeter. Calculate the temperature of the junction point?