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6. A rectangular channel of bed width of 5.0 m and water depth of 1.5 m. The bed width is gradually expanded to 6.0 m. Determine: i. The discharge if a drop of 30 cm in water levels is noticed within the expansion zone, classify the flow; The discharge if the water level is raised by 10 cm within the contracted zone, classify the flow; For the discharge values obtained in a and b above, find b₂ if y2 = yc; How can you keep the water levels within the contracted zone unchanged? Draw the relationship between b2, y₁, and y2. ii. iii. iv. V.