Austin water wants to convey 4,000 [m^3] of water perday from a reservoir to a water treatment plant 8 [km] away. The water surface of the reservoir is 6 m above the entrance of the pipe, and the water surface in the receiving tank is 1[m] above the exit of the pipe. The pipe will be laid on a 1/500 slope and will be made of concrete (good joints). A rotary valve (kv=10) will be placed at the midpoint of the pipe to control flow from the reservoir. Assume square-wall entrances at reservoirs. The temperature in the area averages 20