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The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Answer 1

Nora Arzate

If you use it for one hour consumption wil lbe 08 KWH.

Therefore, for 2.5 hours, the amount of electricity will be 2.5 x 0.8 = 2 kilowatt hours, or 2 units.

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Answer 2

Elena Albarran

To calculate the energy used by the vacuum cleaner, we can use the formula:

Energy (in kilowatt-hours) = Power (in kilowatts) × Time (in hours)

Given: Power rating of the vacuum cleaner = 0.8 kilowatts Time of usage = 2.5 hours

Using the formula: Energy = 0.8 kilowatts × 2.5 hours

Energy = 2 kilowatt-hours

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.