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. \((v + \frac{∂v}{∂z}dz)dxdz\)


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