A horizontal orifice under a constant head of 1.8 meters issues a jet which hits a point 5.5 meters below the centerline of the orifice and 6.0 meters horizontally from the vena contracta. Calculate...

Extracted text: A horizontal orifice under a constant head of 1.8 meters issues a jet which hits a point 5.5 meters below the centerline of the orifice and 6.0 meters horizontally from the vena contracta. Calculate the coefficient of velocity of the orifice. Round off your answer to two decimal places.