Na teraz! Silnik o mocy 0,4kW pracował 15 minut. Oblicz pracę.

[latex]dane:\P = 0,4kW = 400W\t = 15min = 15 * 60s = 900s\szukane:\W = ?\\P = W/t\\W = P * t\\W = 400W * 900s\\W = 360000J = 360kJ = 0,36MJ[/latex]