Question: After a while, a cube of rough steel (10 cm on a side) reaches equilibrium inside a furnace at a temperature of 400C. Knowing that

After a while, a cube of rough steel (10 cm on a side) reaches equilibrium inside a furnace at a temperature of 400°C. Knowing that its total emissivity is 0.97, determine the rate at which the cube radiates energy from each face.

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