2 years ago

What is the monthly (30 days) energy cost (in

Physics

1 answer:

Mila [183]2 years ago

3 0

Explanation:

Power= 40 W

cost=21¢/kWh

t=1 month=30 days = 720h

Energy= power*time

E= 40W* 720h = 28800kWh

Cost= Energy*rate

cost= 28800kWh*21¢/kWh

cost=604800¢

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