The discharge of a single suction centrifugal pump operating against a total head of $12 \mathrm{~m}$ is $50 \mathrm{~L} \mathrm{~s}^{-1} .$ If the pump is directly connected to a motor operating at $1440 \mathrm{rpm},$ the specific speed of the pump will be_______________

The discharge of a single suction centrifugal pump operating against a total head of $12 \mathrm{~m}$ is $50 \mathrm{~L} \mathrm{~s}^{-1} .$ If the pump is directly connected to a motor operating at $1440 \mathrm{rpm},$ the specific speed of the pump will be_______________

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