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# The following tube is composed of both oil (density 900kg/m3) and water as shown below. Calculate the pressure at P1, P2, and P3.?

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- NCSLv 71 month ago
p₁ = p₂ = p₀ + 900kg/m³ * 9.8m/s² * 0.75m = p₀ + 6615 Pa

p₃ = p₀ + 900kg/m³ * 9.8m/s² * 0.50m = p₀ + 4410 Pa

This gives the absolute pressures. For gauge, subtract p₀.

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