• # question_answer The drag force D on a certain object in a certain flow is a function of the coefficient of viscosity p, the flow speed, V and the body dimension L (for geometrically similar objects); then D is proportional to: A) $L\,\mu \,V$                B) $\frac{{{\mu }^{2}}{{V}^{2}}}{{{L}^{2}}}$C) ${{\mu }^{2}}{{V}^{2}}{{L}^{2}}$                      D) $\frac{\mu \,L}{V}$

$L\mu V=\frac{m\times kg}{m\times s}\times \frac{m}{s}=kg.\text{m/}{{\text{s}}^{\text{2}}}=N$