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Q1 = 0,62N
Pn = 784 kg/m³
PC = ?
Pc= Mc/Vc = Qc/gVc
Q - pn * Vc * g = Q1 -> Vc = Q-Q1 / Pn*g
Podstawiamy v z drugiego do pierwszego
Pc = Q /g * Pn*g/Q - Q1 = Qcpn / Q-Q1 = 1,24N*784kg/m³ / 0,62 N = 1568 kg/m³
/ - kreska ulam.