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t=90min=1,5h
W=Pt=200W*1,5h=300Wh=0,3kWh
0,3kWh*0,45zł=0,13zł
pierwszy!!! liczę na naj
E=200W*1,5H+O,3Kwh
0,3*0,45=0.13zł
t = 90 min = 1,5h
W = ?
W= P*t 200w *1,5h = 300Wh =0,3kWh
0,3kWh * 0,45 = 6,6zł
Odp: Koszt ten wynosi 0,13 zł
Prosze o naj xD