A barrel contains a 0130 rm m layer of oil of density620, Ask an Expert

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A barrel contains a 0.130 {\rm m} layer of oil of density620 {\rm{{\rm kg}/{\rm m}}}^{\rm{3}}floating on water that is 0.290 {\rm m} deep. What is the gaugepressure (in unit Pa) at the oil-water interface? What is the gauge pressure at the bottom of the barrel?

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