Problem 50192.
An absolutely black body in the form of a ball with a radius of 1 cm radiates an energy of 684 kJ over a period of 10 minutes. It is located inside a spherical cavity with a radius of 10 cm, the walls of which also radiate as an absolutely black body. The ball and the cavity are in a state of thermodynamic equilibrium. Find: the energy emitted by the walls of the cavity in a time interval of 1 min.; the wavelength at which the maximum emissivity of the cavity falls.
A detailed solution with a brief note of the condition, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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