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March 28, 2017

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an oil layer floats on 87 cm of water in a tank. the pressure at the bottom of the tank is 120.0 kPa. How thick is the oil?

  • Physics - ,

    p = p(atm) + ρ(w) •g•h(w) + ρ(oil) •g•h(oil),
    p = 120 000 Pa
    p(atm) =101325 Pa,
    ρ(w) = 1000 kg/m^3
    ρ(oil) = 850 kg/m^3 (depends on the type of the oil) !!!!
    h(w) = 0.87 m.
    g =9.8 m/s^2
    h(oil) =
    ={p- p(atm) + ρ(w) •g•h(w)}/ ρ(w) •g =
    =1.22 m

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