In a double U-tube manometer (see attached figure), fluid A and fluid B are connected one to another by means of vertical and horizontal pipes filled with different types of fluids of different densities. Assume all liquids to be incompressible and all needed information are mentioned on the figure a) [15 marks) Determine the pressure difference. Pp-Pa, between the two pipes. b) [10 marks) Re-calculate the pressure difference between the two pipelines if the tube containing mercury has been completely removed Water, SG=1.0 Glycerin, SG=1.26 Oil SG=0.88 60 cm 10 cm B 12 cm 22 cm Mercury, SG=13.56