Odpowiedź :
[tex]dane:\\W = 260 \ kJ = 260 \ 000 \ J\\t = 0,5 \ h = 1800 \ s\\szukane:\\P = ?\\\\P = \frac{W}{t}\\\\P = \frac{260000 \ J}{1800 \ s} = 144,4 \ W[/tex]
[tex]dane:\\W = 260 \ kJ = 260 \ 000 \ J\\t = 0,5 \ h = 1800 \ s\\szukane:\\P = ?\\\\P = \frac{W}{t}\\\\P = \frac{260000 \ J}{1800 \ s} = 144,4 \ W[/tex]