A tank has an inlet flow with a velocity of 200 ft/min through a 4 inch diameter pipe. The fluid is water at standard pressure and temperature. The tank has two outlets. One flow has a velocity of 200 ft/min and passes through a 3 inch diameter pipe. If the diameter of the second pipe is also 3 inches, at what level must the second velocity be held to maintain a stable (steady flow) water level inside the tank?