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3. Consider a rectangular fin that is used to cool a motorcycle engine. The fin is 0.15m long and at a temperature of 250C, while the motorcycle is moving at 80 km/h in air at 27C. The air is in parallel flow over both surfaces of the fin, and turbulent flow conditions can be assumed to exist throughout. a) What is the rate of heat removal per unit width of the fin? b) Generate a plot of the heat removal rate per unit width of the fin for motorcycle speeds ranging from 10 to 100 km/h