Vodorovnou trubicou s plošným obsahom prierezu 20 cm2 prúdi voda rýchlosťou 8 m/s. Tlak vody je 108 kPa. Akú rýchlosť a tlak má voda rozšírenom mieste trubice s plošným obsahom prierezu 40 cm2? Hustota vody je 1000 kg/m3.
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