Water enters a pump impeller radially. It leaves the impeller with a tangential component of absolute velocity of \(10 \mathrm{~m} / \mathrm{s}\). The impeller exit diameter is \(60 \mathrm{~mm}\), and the impeller speed is \(1800 \mathrm{rpm}\). If the stagnation pressure rise across the impeller is \(45 \mathrm{kPa}\), determine the loss of available energy across the impeller and the hydraulic efficiency of the pump.