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31-10-2022
Physics

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Consider a 2.75 W electric clock. What is the yearly cost, in dollars, of operating such aclock if the cost of electricity is $0.075 per kW⋅h?

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HayderS414788 HayderS414788

31-10-2022

1 year= 365 days

1 day = 24 hours

1 kw = 1000w

2.75 x 1/1000 = 0.00275 kw

0.00275 kw * 24 * 365 = 24.09 kw*h

Cost = $0.075 per kwh

Cost = 0.075 x 24.09 = $1.80

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