A U-shaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. On the right side of the tube, the depth of oil is 5.90 . On the left side of the tube, the depth of the oil is 2.40 . The density of the water is 1.00 * 10^3kg/m3, and the density of the vegetable oil is 920kg/m3. Find difference in height between the two sides of the tube.