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021 10.0 points A box with a total surface area of 1.75 m2 and a wall thickness of 3.87 cm is made of an insu

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021 10.0 points A box with a total surface area of 1.75 m2 and a wall thickness of 3.87 cm is made of an insu lating material. A 7.6 W electric heater inside the box maintains the inside temperature at 164C above the outside temperature. Find the thermal conductivity of the insu lating material. Answer in units of W / 111 - C

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