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A 36 inches wide by 80.5 inches high by 2.5 inches thick solid oak door has an interior temperature of 74 F and an

A 36 inches wide by 80.5 inches high by 2.5 inches thick solid oak door has an interior temperature of 74 F and an exterior temperature 31 F. Assume that the thermal conductivity of the door is 0.098 Btu/(ft-hr-F). Given: Q = kA AT Ax What is the HEAT FLUX across the door (in BTU -)? hr ft

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