1.A rectangular channel carries discharge of 10 m^2/s per unit width, with a sluice gate. Calculate the flow depth y3, if a hydraulic jump forms downstream of the sluice gate when y1 = 20 m.
2.The Golden Gate Bridge has a main span of 4200 ft, a sag of 470 ft, and a total static loading of 21,300 lb/linear foot. Calculate the max tension, min tension, and the total length of cable.