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h₁ = 2 m
p ₁ = 140 hPa = 14000 N/m²
g = 10 N/kg
1. obliczam gęstość cieczy :
p₁ = h₁ * d * g
d = p₁ / d * g
2, obl. ciśnienie na głębokości h = 15 m
p = h *d * g
p = 15 m * 700 kg/m³ * 10 N/kg = 105000 N/m² = 105000 Pa = 105 kPa
15m ---- x
x= 15*140/2=1050 HPa