The statement that is NOT true about the difference between laminar and turbulent boundary layers is:1. the Reynolds number for a turbulent boundary layer is higher than that for a laminar boundary layer. 2. the wall shear stress for a turbulent boundary layer is greater than that for a laminar boundary layer. 3. a turbulent boundary layer is thicker than a laminar boundary layer. 4. the velocity gradient at the wall is greater for a laminar boundary layer than a turbulent boundary layer.
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