The tank is being filled with water by two one-dimensional inlets. The water height is h. (a) Find an expression for the change in water height dh/dt. (b) Compute dh/dt if D1 = 1 in, D2 = 3 in, V1 = 3 ft/s, V2 = 2 ft/s, and At = 2 ft, assuming water at 20°C.