Question: how much energy in kj does a 75 watt?
Answer: 1355 kWh (3600kJ/1 kWh)= 4,878,000 kJ b.) Find the energy used in J/day. 4,878,000 kJ/30 days (1000J/kJ)= 1.626 x 10 8 J/day c) At the rate of $.