What size of orifice is needed to produce a change in head

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What size of orifice is needed to produce a change in head of 9m for a discharge of 2 m^3/s of water in a 1-m diameter pipe.

Reference no: EM13316991

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What size of orifice is needed to produce a change in head : What size of orifice is needed to produce a change in head of 9m for a discharge of 2 m^3/s of water in a 1-m diameter pipe.
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