Solution to task 549 from Chertov´s for extramural stud

Solution to task 549 from Chertov´s for extramural stud

549. A muffle furnace with a power consumption of P = 1 kW has an opening with an area of S = 100 cm2. Determine the fraction η of the power dissipated by the walls of the furnace if the temperature of its inner surface is 1 kK.

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