A steel sphere 10 cm in diameter is suddenly immersed in a tank of oil at 10C.

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A steel sphere 10 cm in diameter is suddenly immersed in a tank of oil at 10ºC. The initial temperature of the sphere is 220ºC; h = 5000 W/m2 · ºC. How long will it take the center of the sphere to cool to 120ºC?
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Heat Transfer

ISBN: 978-0073529363

10th edition

Authors: Jack Holman

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