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An electric current passes through a metal strip 0.50 cm by 5.0 cm by 0.10 mm,...

An electric current passes through a metal strip 0.50 cm by 5.0 cm by 0.10 mm, heating it at a rate of 128 W. The strip has emissivity e=1 and its surroundings are at 306 K. What will be the strip’s temperature(K) if it’s enclosed in an insulating box with thermal R=12 K/W resistance that blocks all radiation?

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