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Two rooms, each a cube 4 m per side, share a 13.9-cm thick brick wall....

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Physics

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Two rooms, each a cube 4 m per side, share a 13.9-cm thick brick wall. Because of a number of100-W lightbulbs in one room, the air is at 20 deg C, while in the other room it is at 9 deg C. Howmany of the 100-W bulbs are needed to maintain the temperature difference across the wall? Kprick= 0.84 W/m.KRound your answer to 2 decimal places.

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