Two horizontal pipelines are parallel, with one carrying salt water ( = 1.988 slugs/ft3 ) and the other carrying fresh water ( = 1.937 slugs/ft3 ). An inverted manometer using linseed oil ( = 1.828 slugs/ft3 ) as the manometer fluid is connected between the two pipelines. The interface between the oil and the fresh water in the manometer is 38 in. above the centerline of the freshwater pipeline, and the oil/salt water interface in the manometer is 20 in. above the centerline of the salt water pipeline. If the manometer reading is 8 in., determine the difference in the pressures between the pipelines (a) in Pa and (b) in psi.
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