Answer to Question #172422 in Physics for Grace Olivia Morgan

Question #172422

1. A 300 W plasma TV is used for 30 hours in a week, and costs 81p to run. How much is the unit cost of electricity?

Expert's answer

"E=Pt=300\\ W\\cdot30\\ h=9\\ kWh.""Unit\\ Cost=\\dfrac{81\\ p}{9\\ kWh}=9.0\\ \\dfrac{p}{kWh}."

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