The flow rate of a liquid (density 1.26 gm/cm3) flowing under isothermal conditions in a pipe of length 1ft and inside diameter ft/min. What is the entrance length in feet? (1 inch for a pressure drop of 40psi is 0.00398)

Biochemical Engineering mainly deals with the design, construction, and advancement of unit processes that involve biological organisms (such as fermentation) or organic molecules (often enzymes) and has various applications in areas of interest such as biofuels, food, pharmaceuticals, biotechnology, and water treatment processes. (Source: Wikipedia)