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A tungsten evaporation source is rated at 1000 W and operates at 120 V. If the...

A tungsten evaporation source is rated at 1000 W and operates at 120 V. If the filament heater wire is 20 cm long and 0.75 mm in diameter estimate the temperature (T) the source will reach when powered. Compare your answer with an alternative estimate of the estimate assuming all of the input electrical power dissipated is thermally radiated from the filament surface.

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