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chem:The electricity provided to your home by your local power company?
The electricity provided to your home by your local power company is measured in a unit of energy termed a kilowatt. A watt (W) is defined as the transfer of one joule of energy per second. If you burn a 60 W light bulb for 10.5 hours, how many kilojoules of electricity will be transformed into heat and light
1 W = 1 J/s, therefore: 60W = 60 J/s
10.5 hours = how many seconds?
10.5 hours x 60 sec/min x 60 min/hour = 37,800 s
60 J/s x 37,800 s = 2,268,000 J
1 kJ = 1000J
2,268,000 J x 1 kJ/1000 J = 2,268 kJ
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