The drawing below represents the attic of a home. The homeowner wants to save energy (and money) by putting reflective foil (&r= 0.07) onto the ceiling of the attic. If the emissivity of the original surface was & = 0.85 for the ceiling and the floor of the attic, what is the ratio of the radiation heat transferred by the "new" attic to the radiation heat transferred by the "old" attic? HINT: How many surfaces are there? Consider only heat transfer within the attic. Roof Attic "floor" A1, T1, E1 L = 40 m Attic "ceiling" A2, T2, E2 0 = 30