The spillway for a dam is 20 m wide and is designed to carry 125 m3/s at flood stage. A 1:15 ratio model is constructed to study the flow characteristics through the spillway. The effects of surface tension and viscosity can be neglected. A) Determine the required width and volume flowrate of the model, and b) find the operating time for the model that corresponds to a 24-hr period for the prototype.