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Heat Transfer: Thermal conduction and radiation Stefan's law

An iPod is left running inside a thin insulating case 2.5mm thick with thermal condoctivity of 0.02WK^-1 m^-1 The case is black and at 25 degrees Celsius and exchanges energy with it's surroundings, all of which are at 20 degrees Celsius, by radiation alone. What is the temperature inside the case?

Solution Summary

Temperature of an object in cover is calculated using conduction and radiation laws.