Water flows through the 1-m-diameter culvert at a depth of 0.25 m. If the culvert has an unfinished-concrete surface and has a slope of 0.002, determine the volumetric flow. Take n = 0.014. The...

Water flows through the 1-m-diameter culvert at a depth of 0.25 m. If the culvert has an unfinished-concrete surface and has a slope of 0.002, determine the volumetric flow. Take n = 0.014.

The channel is made of unfinished concrete. Determine the required slope if the flow is to be 20 m³/s when the depth is y = 2 m. Take n = 0.014.