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

According to rutherford's nuclear theory, most of the volume of an atom is , so the volume of a hydrogen atom cannot be mostly due to the proton. according to rutherford's nuclear theory, the core of an atom (nucleus) contains most of of an atom and is , so the majority of the mass of a fluorine atom cannot be due to its nine electrons. according to rutherford's nuclear theory, the number of negatively charged particles outside the nucleus the number of positively charged particles within the nucleus, so a nitrogen atom has 7 protons and 7 electrons, while a phosphorous atom cannot have 15 protons and 150 electrons. word bank: dense, empty space, more than, mass, particles, the same as, less than, positively charged, negatively charged