Задача 50080.

Molten metal surface area of \u200b\u200b10 m ^ 2 emits one minute to 40 kJ. The surface temperature is 2500 K. Find: 1) What would be the radiation of the surface if it was black, 2) what is the attitude of the surface irradiance and blackbody at a given temperature.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.

If you have any questions to address, please. I´ll try to help.