You have fabricated a 1000x scale model of a microscale feature that is to be used in a microchip. The device itself is only 1 mm in size and is therefore too small to test accurately. However, you'd like to know the heat transfer coefficient between the device and an air flow that has a velocity of 10 m/s. What velocity should you use for the test and how will the measured heat transfer coefficient be related to the actual one?

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