Odpowiedzi

2010-04-01T19:13:35+02:00
M = p(ro) * V = 1000 kg/m3 *4,5 m3 = 4500 kg
F = m*g = 4500 kg * 10 N/kg = 45000 N
W = F*s = 45000 N * 150 m = 6750000 J
1 min = 60 s.
P = W/t = 6750000 J / 60 s = 112500 W
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