75 m thick side wall of an oven is primarily made of an insulation with a thermal conductivity. electrical " 310k. 1 is a -the wall: fixed the temperature of electric coils within the of lost through area perpendicular to on the outside primarly thermal conductivity on the inside oven oven 00 s 420 K. The dissipate 36.5W energy to make up for the heat- the wall. Calculate the wall surface it the temp surface heat flow if wall does not exceed