A fluid, density ρ=960 kg/m3 is flowing steadily through the below tube. The section diameters are d1=10 cm and d2=8 cm. The gauge pressure at 1 is P1=200kN/m2 The velocity at 1 is u1=5 m/s. The tube is horizontal (z1=z2). What is the gauge pressure at section 2?