A brick wall with thermal conductivity 1 3 W (mK) is covered completely with a sheet of foam of the same thickness as the brick, but with 0 025 W (mK) How is the rate at which heat is conducted through the wall changed by the addition of the foam ...

A brick wall with thermal conductivity = 1.3 W/(mK) is covered completely with a sheet of

Question:

A brick wall with thermal conductivity κ = 1.3 W/(m·K) is covered completely with a sheet of foam of the same thickness as the brick, but with κ = 0.025 W/(m·K). How is the rate at which heat is conducted through the wall changed by the addition of the foam?

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