Fluid and gas pressure

Fluid pressure
p = ρgh
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      =   

Connected (communicating) vessels
h1 / h2 = ρ2 / ρ1
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      =   

Archimedes (buoyant) force
F_a = ρ_sk * g * V
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      =   

The volume of fluid flowing through the pipe
V = S v t
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      =   

Velocity of the fluid flowing out of the pipe
v = saknis(2p/ρ)
Find   It is known that:
      =