Задача 20564.

How thick should make the wooden wall of a building, so that it passed the same warmth as a brick wall thickness d = 40 cm at the same temperatures inside and outside the building? The coefficients of thermal conductivity of brick and wood are equal to 0.70 W / (m * K) and 0.175 W / (m * K).

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