Boundary layer thickness is given by

1.	Boundary layer thickness is given by
A.	δ = 5.64 x/ (Re) ½
B.	δ = 5.64 x/ (Re) ½
C.	δ = 6.64 x/ (Re) ½
D.	δ = 7.74 x/ (Re) ½
Answer» D. δ = 7.74 x/ (Re) ½

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