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2010-02-27T01:04:00+01:00
Witam
dane t1=1s, t2=1h=3600s, V=20l, h=25m, d=1kg/l, g=10m/s2
szukane W2
P = W2/t2
W2 = P *t2........P = W1/t1 = Ep/t1 = mgh/t1 = dVgh/t1
W2 =dVght2/t1 = 1kg/l*20l*25m*10m/s2*3600s/1s = 18 000 000 J = 18 MJ

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