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Statement of a problem № 41605

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The cost of electricity varies widely through the United States; $0.120/kWh is one typical value. At this unit price, calculate the cost of (a) Leaving a 40.0-W porch light on for two weeks while you are on vacation, (b) Making a piece of dark toast in 3.00 min with a 970-W toaster, and (c) Drying a load of clothes in 40.0 min in a 5 200-W dryer.




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