1.

The rate of change of velocity along the depth of layer is ___________

A. ( frac{ v}{ z}= frac{1}{ _w} frac{ ^2 overline{u}}{ z^2} )
B. ( frac{ v}{ z}= frac{k}{ _w} frac{ overline{u}}{ z^2} )
C. ( frac{ v}{ z}= frac{ ^2 overline{u}}{ z^2} )
D. ( frac{ v}{ z}= frac{k}{ _w} frac{ ^2 overline{u}}{ z^2} )
Answer» E.


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