Odpowiedź:
2. W = 18MJ
7,50zł
Wyjaśnienie:
t = 2h = 7200s
P = 2500W
1 KWh - 1,50zł
P = W/t //Moc = praca / czas
W = P * t
W = 2500 * 7200 = 18MJ (megadżule)
1KWh = 1000 * 3600 [J] = 3,6MJ
18/3,6 = 5 (18MJ to 5 KWh)
5 * 1,50zł = 7,50zł
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Odpowiedź:
2. W = 18MJ
7,50zł
Wyjaśnienie:
t = 2h = 7200s
P = 2500W
1 KWh - 1,50zł
P = W/t //Moc = praca / czas
W = P * t
W = 2500 * 7200 = 18MJ (megadżule)
1KWh = 1000 * 3600 [J] = 3,6MJ
18/3,6 = 5 (18MJ to 5 KWh)
5 * 1,50zł = 7,50zł