.silnik o mocy 1[kw] [pracował w ciągu godziny.jaką pracę wykona ten silnik.  daje najjjjjjjjjjjjjjjjjjjjjjjjjjj 

[latex]Dane: \ t=1h=3600s \ P=1kW=1000W \ W=? \ Wzory: \ P=W/t=>W=P*t \ Obliczenia: \ W=3600s*1000W=3,6*10^6J[/latex]

dane: P = 1 kW = 1000 W t = 1 h = 3600 s szukane: W = ? P = W/t  I*t W = P * t W = 1000W * 3600 W = 3 600 000 J = 3600 kW = 3,6 MW 1 kW = 1000 W 1 MW = 1 000 000 W