A dimensionless combinations of variables that is important in the study of viscous flow through pipes is called the Reynolds number, Re, defined as pvd/u where p is the fluid density, v the mean fluid velocity,
D the pipe diameter, and u the fluid viscosity. A newtonian fluid having a viscosity of 0.38 N*s/m2 and a specific gravity of 0.91 flows through a 25-mm-diameter pipe with a velocity of 2.6m/s. Determine the value of the Reynolds number using (a) Si units, and (b) BG units