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Home Conservation Laws Conservation of Energy Examples Converting kilowatthours to joules  
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Converting kilowatthours to joulesThe electric company bills you for energy in units of kilowatthours (kilowatts multiplied by hours) rather than in SI units of joules. How many joules is a kilowatthour?
1 kilowatthour = (1 kW)(1 hour) = (1000 J/s)(3600 s) = 3.6 MJ.


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