A long rod, insulatedto prevent heat loss along its sides, is in perfect thermal contactwith boiling water (at atmospheric pressure) at one end and with anice-water mixture at the other

A long rod, insulatedto prevent heat loss along its sides, is in perfect thermal contactwith boiling water (at atmospheric pressure) at one end and with anice-water mixture at the other . The rod consists of 1.00-m sectionof copper (one end in steam) joined end-to-end to a length L2 of steel (one end in ice). Both sections of the rod havecross-section areas of 4.00 cm^2 . The temperature of the copper-steel junction is 65.0 degree C after a steady state has been set up. How much heat per second flows from the steambath to the ice-water mixture? What is the length L2 of the steel section?