Odpowiedź:
P = 2000 W = 2 kW
t = 40 min = 40/60 h = 2/3 h
t = 40 min = 40*60s = 2400 s
Praca w dżulach:
W = P*t = 2000W * 2400s = 4 800 000 J = 4,8 MJ
W = 4,8 MJ
Praca w kilowatogodzinach:
W = P*t = 2kW * 2/3 h = 4/3 kWh = 1 i 1/3 kWh
W = 1 i 1/3 kWh
Wyjaśnienie:
P=W/t
W=Pt
W = 40min*2000W
W= 2400s*2000W = 4800000J
W = P*t = 2kW * 2/3 h =1.33kWh
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Verified answer
Odpowiedź:
P = 2000 W = 2 kW
t = 40 min = 40/60 h = 2/3 h
t = 40 min = 40*60s = 2400 s
Praca w dżulach:
W = P*t = 2000W * 2400s = 4 800 000 J = 4,8 MJ
W = 4,8 MJ
Praca w kilowatogodzinach:
W = P*t = 2kW * 2/3 h = 4/3 kWh = 1 i 1/3 kWh
W = 1 i 1/3 kWh
Wyjaśnienie:
Odpowiedź:
P=W/t
W=Pt
W = 40min*2000W
W= 2400s*2000W = 4800000J
W = P*t = 2kW * 2/3 h =1.33kWh