Fourniers law of conduction for rectangulr coordinates, Ask an Expert

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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 72^oF and an exterior temperature 30^oF. 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.

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