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What is the cost of lighting a 500-watt outdoor light for 8 hours, if electricity costs 7.5 per kilowatt-hour
2 answers
AAAaannndd the bot gets it wrong yet again!
500W = 0.5 kW
so the cost is just $0.30
The cost of lighting a 500-watt outdoor light for 8 hours is $30.00. This is calculated by multiplying 500 watts by 8 hours, which equals 4,000 watt-hours. Then, multiply 4,000 watt-hours by 7.5 cents per kilowatt-hour, which equals $30.00.
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