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Approximately how much electrical energy does a 5-W light bulb convert to radiant or thermal energy in one hour

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instaoceanclash

answer

18000 J

explanation

the lightbulb dissipates 5W of power

P = ΔE / Δt

rearrange to solve for energy

ΔE = PΔt

P = 5W

t =  1 hour = 60 minutes = 3600 seconds

ΔE = 5 * 3600

ΔE = 18000 J

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