Flow situations in biofluid mechanics involve the flow through tubes that change in size with time (such as blood vessels) or are supplied by an oscillatory source (such as a pulsing gland). The volume flow rate Q in the tube will be a function of the frequency w, the tube diameter D, the fluid density p, viscosity u, and the pressure gradient (Ap)/(A/). Find the n-groups for this situation in the form Q/(wD^3)=f(11, 12) Q/wD^3 = f(u/wpD^2, (Ap/Al)/(pw^2)) Q/wD^3 = f(u/wD^2, (Ap/Al)/( pw^2D)) O Q/wD^3 = f(u/wpD^2, (Ap/Al)/( W^2D)) Q/wD^3 = f (m/wD^2, (Ap/Al)/( pw^2D) ) O Q/wD^3 = f(u/wpD^2, (Ap/Al)/( pw^2D))