Consider a flat plate positioned inside a wind tunnel, and air at 1 atm and 20°C is flowing with a free stream velocity

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Consider a flat plate positioned inside a wind tunnel, and airat 1 atm and 20°C is flowing with a free stream velocityof 54 m/s. The kinematic viscosity for air at 20°C is ν = 1.516 ×10−5 m2/s. What is the minimum length of the platenecessary for the Reynolds number to reach 2 ×107? When thecritical Reynolds number is 5 × 105, determine thevalue of Reynolds number for the type of flow regime that theairflow will experience at 0.2 m from the leadingedge.