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If electrical energy costs 12 cents, or $0.12, per kilowatt-hour, then what would the following events...

If electrical energy costs 12 cents, or $0.12, per kilowatt-hour, then what would the following events cost?

(a) Burn a 100 W light bulb for 24 h straight.
______$
(b) Operate an electric oven for 6.0 h if it carries a current of 20.0 A at 220 V.
________$

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