Solved: A thick, vertical iron pipe has an inner diameter
Chapter 12, Problem 12.145(choose chapter or problem)
A thick, vertical iron pipe has an inner diameter of 0.065 m. A thin aluminum disk, heated to a temperature of 85 C, has a diameter that is 3.9 105 m greater than the pipes inner diameter. The disk is laid on top of the open upper end of the pipe, perfectly centered on it, and allowed to cool. What is the temperature of the aluminum disk when the disk falls into the pipe? Ignore the temperature change of the pipe.
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