Physics - Fluid Question with Solution | TestHub

For the blood flow in a capillary,

Volumetric flow rate = velocity × area of cross-section

$\mathrm{Q}=\mathrm{Av}$

$\mathrm{ }\mathrm{v}=\frac{\mathrm{Q}}{\mathrm{A}}=\frac{100\times 10^{–6}}{0.25}$

$\mathrm{v}=400\mathrm{ }\times {10}^{–3}\mathrm{ }\mathrm{m}\mathrm{m} {\mathrm{s}}^{-1}=0.4\mathrm{ }\mathrm{m}\mathrm{m} {\mathrm{s}}^{-1}$