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1. |
For infinitesimally small element (with volume V) moving along with the flow with velocity ( vec{V} ), which of these equations represent the divergence of velocity? |
A. | ( nabla. vec{V} = frac{1}{ delta V} frac{d( delta V)}{dt} ) |
B. | ( nabla. vec{V} = frac{D( delta V)}{dt} ) |
C. | ( nabla. vec{V} = frac{1}{ delta V} frac{D( delta V)}{dt} ) |
D. | ( nabla. vec{V} = frac{d( delta V)}{dt} ) |
Answer» D. ( nabla. vec{V} = frac{d( delta V)}{dt} ) | |