Water flows through a horizontal pipe at a rate of 2.6 gal/s. The pipe consists of two sections of diameters 4 in. and 2 in. with a smooth reducing section. The pressure difference between the two pipe sections is measured by a mercury manometer. Neglecting frictional effects, determine the differential height of mercury between the two pipe sections. Take the densities of mercury and water as rhoHg = 847 lbm/ft3 and rhoW = 62.4 lbm/ft3. Horizontal bottle has nozzle at the right side. At the right side of nozzle, cylindrical horizontal shape is shown. The right arrow labelled as flow. The differential height of mercury between the two pipe sections is in.