When a gravity-driven liquid jet issues from a slot in a tank, as in Fig P3.6, an approximation for the exit velocity distribution is u≈ 2g (h−z), where h is the depth of the jet centerline. Near the slot, the jet is horizontal, two-dimensional, and of thickness 2L, as shown. Find a general expression for the total volume flow Q issuing from the slot; then take the limit of your result if L

2= -L