A rectangular conduit 200 cm in length is needed to convey water at a flow rate of 18 mL s−1. The conduit cross section has a height of 0.23 cm and a width of 0.45 cm. Calculate the pressure drop...

A rectangular conduit 200 cm in length is needed to convey water at a flow rate of 18 mL s⁻¹. The conduit cross section has a height of 0.23 cm and a width of 0.45 cm. Calculate the pressure drop (mmHg) over the length of the conduit to obtain this flow rate. Assume the kinematic viscosity (ν) of water is 0.01 cm2 s⁻¹
and its density is 1 g cm⁻³.