A toaster oven operating at 800 W of power takes 60 min to bake a potato.

How much energy is this in joules?

How much energy is this in kilowatt-hours?

1 answer

60 min = 3600 seconds
work = energy in Joules = watts * seconds
800 * 3600 Joules

0.8 kw * 1 hour = .8 kw hr

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