A stainless steel saucepan, with a base that is made of 0.350-cm-thick steel [k = 46.0 W/(m∙K)] fused to a 0.150-cm thickness of copper [k = 401 W/(m∙K)], sits on a ceramic heating element at 104.00°C. The diameter of the pan is 18.0 cm and it contains boiling water at 100.00°C.
(a) If the copper-clad bottom is touching the heat source, what is the temperature at the copper-steel interface?
(b) At what rate will the water evaporate from the pan?