Will the diffusion treatment take longer or shorter at 500oC? Why? b. The diffusion coefficients for copper in aluminum at 500oC and 600oC are 4.8 × 10-14 and 5.3 × 10-13 m2 /s, respectively. Determine the approximate time at 500oC that will produce the same diffusion result

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2