In a following U-Tube Manometer, the specific weight of fluid 1 (Y1) = 9.8 kN/m³ and specific weight of fluid 2 is (Y2) = 15.6 kN/m³. Where h1 = 1.0 m and h2 = 0.5 m.Please find the pressure difference (PA- PB) and specify the units.

Fig: 1

Fig: 2