ile prądu zużywa żarówka 60w w ciągu godziny
jednostka pracy jet Joul
wiec
W=Pt
W=60[W}*3600[s]=216000[J]=216[kJ]
ODP
W=216[kJ]
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jednostka pracy jet Joul
wiec
W=Pt
W=60[W}*3600[s]=216000[J]=216[kJ]
ODP
W=216[kJ]