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The U-tube manometer shown to the right is employed to measure the specific weight of a liquid. The manometer tube consists of an internal diameter of 0.5 cm and it is initially filled with water. Exactly 2 cm3 of an unknown liquid is then poured to one leg of the manometer and a displacement of 5 cm between the surfaces is measured as illustrated. Determine the specific weight of the unknown liquid?

1976_manometer.jpg

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