Cooling of an Object: Which Hypothesis is Correct?

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The discussion centers on the cooling of a hot object placed on a slab at room temperature, evaluating two hypotheses. The first hypothesis suggests that the object will cool down due to conduction with the slab, convection from surrounding air, and electromagnetic radiation emitted by the object. The second hypothesis posits that if the slab has a higher emissivity than the object, it could potentially heat the object instead. The conversation highlights uncertainty about the validity of the second hypothesis and its relation to the second law of thermodynamics. Overall, the cooling process involves complex interactions of heat transfer mechanisms.
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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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