1. The problem statement, all variables and given/known data A fire in a room rapidly raises the temperature of the surface of the wall to a steady value of 1000°C. on the other side of the wall is a large warehouse, whose ambient air temperature is 20°C. If the wall is solid brick, 200 mm thick, with thermal conductivity of 0.72 W/m°C, what is the steady state temperature of the surface of the wall ( on the warehouse side) in °C. You may assume the heat transfer coeffiecient of the air in the warehouse is 12W/m^2°C 2. Relevant equations d^2T/dx^2 =ρc dT/ kdt 3. The attempt at a solution this is a second order differential equation. Please help me. thanks in advance!