Consider a sphere with a diameter of 20 mm and a sur-face
Chapter 7, Problem 7.75(choose chapter or problem)
Consider a sphere with a diameter of 20 mm and a sur-face temperature of 60C that is immersed in a fluid at atemperature of 30C and a velocity of 2.5 m/s. Calcu-late the drag force and the heat rate when the fluid is(a) water and (b) air at atmospheric pressure. Explainwhy the results for the two fluids are so different.
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