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Two rooms, each a cube 4.8 m per side, share a 15-cm - thick brick wall. Because of a number of 100-W lightbulbs in one room, the air is at 30\deg C, while in the other room it is at 10\deg C. How many of the 100-W bulbs are needed to maintain the temperature difference across the wall?

Two rooms, each a cube 4.8 m per side, share a 15-cm - thick brick wall. Because of a number of 100-W lightbulbs in one room, the air is at 30\deg C, while in the other room it is at 10\deg C. How many of the 100-W bulbs are needed to maintain the temperature difference across the wall?

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Two rooms, each a cube 4.8 m per side, share a 15 - cm - thick brick wall. Because of a number of 100 - W lightbulbs in one room, the air is at 30\deg C, while in the other room it is at 10\deg C. How many of the 100-W bulbs are needed to maintain the temperature difference across the wall?
Transcribed Image Text:Two rooms, each a cube 4.8 m per side, share a 15 - cm - thick brick wall. Because of a number of 100 - W lightbulbs in one room, the air is at 30\deg C, while in the other room it is at 10\deg C. How many of the 100-W bulbs are needed to maintain the temperature difference across the wall?
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