5.005 Study A spherical Pyrex glass shell has inside and outside diameters of D1 = 0.1 m and D2 = 0.2 m, respectively. The inner surface is at Ts,1 = 100°C while the outer surface is at Ts2 = 45°C. (a) Determine the temperature at the midpoint of the shell thickness, Trm = 0.075 m). (b) For the same surface temperatures and dimensions as in part (a), show how the midpoint temperature would change if the shell material were aluminum. (a) T(m)glass= (b) T(m)aluminium =