Question: Two plane coaxial disks are separated by a distance L = 0.20 m. The lower disk (A 1 ) is solid with a diameter D

Two plane coaxial disks are separated by a distance L = 0.20 m. The lower disk (A₁) is solid with a diameter D_o = 0.80 m and a temperature T₁ = 300 K. The upper disk (A₂), at temperature Tz = 1000 K, has the same outer diameter but is ring-shaped with an inner diameter D_i = 0.40 m. Assuming the disks to be blackbodies, calculate the net radiative heat exchange between them.

D, A. T2 A. T D.

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