Two rods, one of aluminum and the other of copper, are joined end to end. The cross-sectional area of each is 4.0 x 10^-4 m^2, and the length of each is 0.040m. The free end of the aluminum rod is kept at 302 degrees Celsius, while the free end of the copper rod is kept at 25 degrees Celsius. The loss of heat through the sides of the rods may be ignored. How much heat is conducted through the unit in 2 seconds? Please show the work done in solving this problem. THank you very much!