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The water level in a tank is 12 m above the ground. A hose is connected to the bottom of the tank, and the nozzle at the end of the hose is pointed straight up. The tank is at 13 m above the sea level, and the water surface is open to the atmosphere. In the line leading from the tank to the nozzle is a pump, which increases the water pressure by 50 kPa. Determine the maximum height above the sea level to which the water stream could rise.