Solve the following problem:
Q: Hot coffee is contained in a cylindrical thermos bottle that is of length L = 0.3 m and is lying on its side (horizontally). The coffee container consists of a glass flask of diameter D1 = 0.07 m, separated from an aluminum housing of diameter D2 = 0.08 m by air at atmospheric pressure. The outer surface of the flask and the inner surface of the housing are silver coated to provide emissivities of e1 = e2 = 0.25. If these surface temperatures are T1 = 75° C and T2 = 35°C, what is the heat loss from the coffee?
