At the bottom of a pressurized water tank is a mouth with a diameter of 5 cm, where water is discharged into the atmosphere. The water level is 2 m above the outlet. The tank air pressure above the water level is 300 kPa (absolute) and the atmospheric pressure is 100 KPA. Determine the initial rate of water discharge (volumetric flow rate) from the tank, neglecting the effects of friction.

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