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In an old house, the heating system uses radiators, which arehollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissivity =0.75). It has a temperature of70°C. The new owner of the housepaints the radiator a lighter color (emissivity = 0.50). Assumingthat it emits the same radiant power as it did before beingpainted, what is the temperature of the newly painted radiator?

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