An electric stove burner of diameter 20 cm is at a temperature of 250 °C.If σ = 5.67 x 10-8 W/m2·K4, at what rate is the burner radiating energy? Assume the emissivity ε = 0.6.
A) 4 W
B) 80 W
C) 320 W
D) 1600 W
E) 8000 W
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