Задача id10771

Determine the flow rate of water passing through a complex pipeline (Fig.), if the height of the water level in the tank is H = 20 m, the absolute roughness of the pipes is d = 0.5 mm, the pipeline lengths are l1 = 80 m, l2 = 240 m, l3 = 260 m , pipe diameters d1 = 250 mm, d2 = 100 mm, d3 = 125 mm. Local resistances can be neglected.

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