Water flows in the horizontal pipe shown in the figure. At point A, the cross-sectional area is cm^2 and the speed of the water is 00 m/s. At point B, the cross-sectional area is 16.0 cm^2. The fluid in the manometer is mercury, which has a density of 13,600 kg/m^3. (Water has a density of 1000 kg/m^3.) What is the speed of the water at point B? (3 points) What is the difference in the pressures at points A and B? (3 points) Treating the pressure in the small tube on the left as the same as the pressure at point A and the pressure in the small tube on the right as the same as the pressure at point B, what is the manometer reading? (3 points)