1. Consider a U-tube whose arms are open to the atmosphere. Water is poured into the U-tube from one arm. After the water is let it sit, the surface level in both arms is at 50 cm. Now light oil (p=790kg/m³) is poured from the other arm. One arm now contains 70-cm-high water, while the other contains both fluids (see figure). Determine the height of each fluid in that arm. U 70 cm -Water Oil