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In an electrically heated home, the temperature of the ground in contact with a concrete basement...

In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 12.5 oC. The temperature at the inside surface of the wall is 20.6 oC. The wall is 0.10 m thick and has an area of 7.8 m2. Assume that one kilowatt hour of electrical energy costs $0.10. How many hours are required for one dollar's worth of energy to be conducted through the wall?

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Answer #1

The time taken is 10.55 hr. The explanation is attached.

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