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dane h=5m, P=0,1MW, g=10m/s2=10N/kg, d=1000kg/m3, n%=50% n=0,5
szukane V
P=Wuż/t = n*W/t = n*Ep/t = nmgh/t = nVdgh/t
V = Pt/[ndgh] = 100 000W*1s / [0,5*1000kg/m3*10m/s2*5m] = 4m3/s
.........................pozdrawiam