Question 12 6 Points What is the differential height of water between the two pipe sections in the figure? Air flows through the pipe at a rate of 200 l/s. The pipe consists of two sections of diameters 20 cm and 10 cm with a smooth reducing section that connects them. The pressure difference between the two pipe sections is measured by a water manometer. Neglect frictional effects. Take the air density to be 1.20 kg/m. A 4.1 cm B 3.7 cm 2.6 cm 38cm Air 200 L/s 20 cm 10 cm- ...