2 5 points an iron rod has a cylindrical tip of 4mm in diameter and 25
2. (5 points) An iron rod has a cylindrical tip of 4mm in diameter and 25mm in length and the tip has an emissivity of 0.75. Determine the power required to maintain the tip at 500C if the surrounding temperature is 25C. Take the average heat transfer coefficient of the tip to be h=30W/m²K
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