Odpowiedzi

2010-01-09T12:03:24+01:00
Dane:
V = 1 m³
h = 30m
t = 1 min = 60s
ρ = 1000 [kg/m³]
Rozw.
masa wody
m = ρ×V = 1000 [kg/m³] × 1 m³ = 1000 kg
moc
P = W/t
ale
W = Ep = mgh
czyli
P = mgh/t = 1000 kg ×10 [m/s²]×30m / 60s = 5000 W = 5 kW
2 5 2