Cooling of an Object: Which Hypothesis is Correct?

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SUMMARY

The discussion centers on the cooling of a hot object placed on a slab at room temperature (20° C) and evaluates two hypotheses regarding heat transfer. The first hypothesis posits that the object cools due to conduction with the slab, convection from surrounding air, and electromagnetic radiation emitted by the object. The second hypothesis suggests that if the slab's emissivity exceeds that of the object, the object may actually heat up. The conversation references the Stefan-Boltzmann law and the second law of thermodynamics as critical concepts in understanding these phenomena.

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Homework Statement


An hot object is positioned on a slab at room temperature (20° C), which of that 2 ipothesis is correct?

1)The object will get cold because of the conduction with the slab, the convection af the air around the object and the electromagnetic radiations it send out.
2)If the slab emissivity is bigger than the object emissivity, the object could heat up.
Thanks!


Homework Equations



Stefen-Boltzmann law

The Attempt at a Solution


I don't know if the second ipothesis is correct and in the first the sending out of electromagnetic radiations can be a trick :(
 
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Looks like it's got something to do with the 2nd law of thermodynamics.
 

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