Question: A window whose glass has k = 1.0 W/(mK) is covered completely with a sheet of foam of the same thickness as the glass, but

A window whose glass has k = 1.0 W/(m∙K) is covered completely with a sheet of foam of the same thickness as the glass, but with K = 0.025 W/(m∙K). How is the rate at which heat is conducted through the window changed by the addition of the foam?

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