Two square panels which have sides of length _ of D=4 =2 m are positioned parallel to each other at a distance m. Panel 1 has an emissivity of 1 = 0.2 and a temperature of T = 800 K. Panel 2 has an emissivity of 2 = 0.5 and a temperature of T2 = 600 K. Heat transfer from the surroundings is negligible, and the panels are in vacuum. What is the heat transfer rate between the two panels? a) = 195 kW b) = 32 kW = 84 kW d) = 10,5 kW