# physics

At 7.15 cents per kilowatt-hour, what does it cost to leave a 75.0W light burning 24.0 hours a day?

1. 75W for 24 hours
=0.075 kW for 24 hours
=1.8 kW for 1 hour
=1.8 kW-h
How much would that cost?

posted by MathMate

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