Fournier's Law of Conduction for rectangulr coordinates, states:
Q = kA x (Δt/Δx)
A 36 inches wide by 80.5 inches high by 2 inches thick solid fiberglass door has an interior temperature of 72oF and an exterior temperature 30oF. Assume that the thermal conductivity of the door is 0.023 Btu/(ft-hr - F). What is the HEAT FLUX across the door? Show ALL of your work.