A copper rod, an aluminum rod, and a brass rod, each of 6.00 m length and 1.00 cm diameter, are placed end to end with the aluminum rod between the other two. The free end of the copper rod is maintained at water"s boiling point, and the free end of the brass rod is maintained at water"s freezing point. What is the steady-state temperature of
(a) the copperaluminum junction and
(b) the aluminum-brass junction?