Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of foam insulation 2.3 cm thick on the inside wall surface. the wood has a thermal conductivity of 0.080 w/(m⋅k), and the insulation has a thermal conductivity of 0.010 w/(m⋅k). the interior surface temperature is 19.1 ∘c, and the exterior surface temperature is -10.0 ∘c
a.
what is the temperature at the plane where the wood meets the insulation?
express your answer in degrees celsius to two significant figures.
t=∘c
b.
what is the rate of heat flow per square meter through this wall?
express your answer in watts per meter squared to two significant figures.
p=/m^2