Question

How much time would it take to change the temperature of a room by 10°C by...

How much time would it take to change the temperature of a room by 10°C by radiation?

Known values:

Stefan-Boltzmann constant σ = 5.67*10^-8

Emissivity ε = 0.9

A = 2 m^2

T1 = 290 K

T2 = 260 K

The equation we should be using is the heat transfer by radiation equation. I don't know how to calculate time from that.

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