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OpenStudy (anonymous):

heat transfer question

OpenStudy (anonymous):

i have to determine if a plastic insulation layer around a SOLID sphere would hurt or help the heat transfer from the ball. the sphere being solid is throwing me off, i can't find a way to calculate the thermal resistance, if any. the material and properties of the solid are not specified.

OpenStudy (anonymous):

find the critical radius of insulation and then solve ur problem

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