Consider the arrangement of three flat rectangular plates shown: 4 0.5 m 0.5 m 1 m 1 m 4 "Surface" 4 is a large surroundings at 300 K. Surface 1 is maintained at 500 K and surface 2 is maintained at 600 K. Surface 3 is perfectly insulated at the back so there is no net radiation transfer at this surface. The emissivity of surfaces 1, 2 and 3 is 0.5. The angle formed by surfaces 2 and 3 is 90. Surfaces 1 and 2 are co-planar. (a) Compute the view factors F13, F23, F14, F24 and F34. (b) Compute the net radiation flux at surfaces 1, 2 and 4. (c) Compute the surface temperature of surface 3.