A water pump with impeller diameter of 24 in. is to be designed to move \(15 \mathrm{ft}^{3} / \mathrm{s}\) when running at \(750 \mathrm{rpm}\). Testing is performed on a 1:4 scale model running at \(2400 \mathrm{rpm}\) using air \(\left(68^{\circ} \mathrm{F}\right)\) as the fluid. For similar conditions (neglecting Reynolds number effects), what will be the model flow rate? If the model draws \(0.1 \mathrm{hp}\), what will be the power requirement of the prototype?