Two metal rods, one silver and the other copper, are both attached to a steam chamber as shown in the figure, with a temperature of 100C, at one end, and an ice water bath, with a temperature of 0C, at the other. The rods are 5.0 cm long and have a square cross-section, 2.0 cm on a side. When steady state has been reached, how much heat flows through the two rods in 1.0 min? The thermal conductivity of silver is 417 W/(m K), and that of copper is 395 W/(m K). No heat is exchanged between the rods and the surroundings, except at their ends. Silver Steam chamber Ice water Copper A) 20 kJ B) 39 kJ C) 47 kJ D) 49 kJ E) 11 kJ