At time t, the hydraulic head corresponding to excess hydrostatic pres

1.	At time t, the hydraulic head corresponding to excess hydrostatic pressure is __________
A.	(h= frac{ }{ _w} )
B.	(h= frac{ overline{u}}{ _w} )
C.	(h= frac{ _w}{ overline{u}} )
D.	(h= frac{ overline{u}}{ _w} )
Answer» C. (h= frac{ _w}{ overline{u}} )

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