The Westergaard s equation is given by ___________ – McqOptions

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1.	The Westergaard s equation is given by ___________
A.	( _z= frac{1}{ left[1+2( frac{r}{z})^2 right]^ frac{3}{2}} )
B.	( _z= frac{1}{2 left[1+2( frac{r}{z})^2 right]^ frac{3}{2}} )
C.	( _z= frac{1}{ left[1+2( frac{r}{z})^2 right]^ frac{3}{2}} frac{Q}{z^2} )
D.	( _z= frac{1}{ left[1+2( frac{r}{z})^2 right]^ frac{3}{2}} )
Answer» D. ( _z= frac{1}{ left[1+2( frac{r}{z})^2 right]^ frac{3}{2}} )

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