(Answered) Question a box with a total surface area of 120m2nbspand

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Question: A box with a total surface area of 1.20m² and awall thickness of 4.00cm is made of an insulating material. A10.0W electric heater insided the box maintains the insidetemperature at 15.0C above the outside temperature. Find the thermal conductivity k of the insulating material.

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