Question

A cylindrical log 20 cm in diameter and 55 cm long is glowing red hot in a fireplace. Part A If it's emitting...

A cylindrical log 20 cm in diameter and 55 cm long is glowing red hot in a fireplace.

Part A

If it's emitting radiation at the rate of 38 kW , what is its temperature? The log's emissivity is essentially 1.

Express your answer using two significant figures.

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Answer #1

= 5s cm, 0-20 Cm, = 36kw .temperature of (og &AG T axo e | X2x0.2+ TX.2 x0.55] 5.67K10T 38 1 T=113 1.8 2 K T= 85 8.82

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