Task 20628.

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The outer surface of the brick wall thickness of 37 cm (a half-brick) has a temperature of -15 ° C, and the inner + 20 ° C. During the day, at 1 m ^ 2 wall by conduction of heat lost 5.72 * 10 ^ 6 J. To determine the thermal conductivity of bricks.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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