Zamień
1200Ws= J
10.8MJ= kWh
0.2kWh= J
32.4*10⁹J= kWh (tu jest to potegi 9)
25kWh= J
prsze o szybką odpowiedż z góry wielkie dzięki ;)
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E=U*i*t
E=P*t
J=W*s
1200Ws=1200J=1,2kJ
10.8MJ=10800000J=10800000Ws=10800kWs/3600=3kWh
0.2kWh=200Wh=200W*3600s=720000Ws=720000J=0,72MJ
32.4GJ=32400000000J=32400000kWs/3600=9000kWh
25kWh=25000Wh=25000*3600Ws=90000000J=90MJ
W razie problemów,ewentualnie innych zadań z fizyki,matmy,chemii poziom gimnazjum gg:11828363