Question

Oblicz :

12700J =....... kWh

20kJ=.........kWh

1,7mJ=........kWh

Proszę o pomoc ! ;(

Answer 1

12700J/3600000J= 0,00352 Kilowatogodzina [kWh]
20kJ=20000J/3600000J=0,0056 Kilowatogodzina [kWh]
1,7MJ=1700000J/3600000J=0,4722 Kilowatogodzina [kWh]

Licżę na najlepsze :).

Answer 2

1 000 J = 1 kJ

1 000 000 J = 1 MJ

1 J = 1 Ws = 0,001 kWs = 0,001 kW *(1/3600h) = 0,00000028 kWh

1 kJ = 0,00028 kWh

1 MJ = 0,28 kWh 

 

12 700 J = 12,7 kJ = 12,7 *0,00028 kWh = 0,0035 kWh

20 kJ = 20 *0,00028 kWh = 0,0056 kWh

1,7 MJ = 1,7 *0,28 kWh = 0,476 kWh