If v is velocity at the entry of the soil element of size dx, dz and width dy as shown in the figure. The quantity of water leaving the element is ___________

\((v + \frac{∂v}{∂z}dz)dxdz\)

\((v + \frac{∂v}{∂z}dz)dxdy\)

If v is velocity at the entry of the soil element of size dx, dz and w

1.	If v is velocity at the entry of the soil element of size dx, dz and width dy as shown in the figure. The quantity of water leaving the element is ___________
A.	v
B.	vdxdy
C.	\((v + \frac{∂v}{∂z}dz)dxdy\)
D.	\((v + \frac{∂v}{∂z}dz)dxdz\)
Answer» D. \((v + \frac{∂v}{∂z}dz)dxdz\)