a) a heater supplies 1 w power to one end of a cylindrical rod of al with diameter 4 mm and length 20 cm. the other end is held at room temperature (20ºc). find the temperature at the hot end.
b) Find the temperature of the hot end if the rod is copper. c) Assume that the aluminum and copper rods (each with length 20 cm, diameter 4 mm") are connected together with a joint of perfect thermal conductance. One end of the Cu is held at 0 degree C and one end of the AI is held at 50 degree C. Find the heat current through the rod and the temperature of the joint, T_joint.
