Emily's vacuum has a power rating of 200w if the vacuum cleaner does 360000j of work how long did Emily spend vacuuming

Question

Physics

Maren Ingram

9 February, 13:15

Emily's vacuum has a power rating of 200w if the vacuum cleaner does 360000j of work how long did Emily spend vacuuming

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Answers (1)

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Brenton Orr · Answer 1

Power = (work) / (time)

Multiply each side by (time) : (power) x (time) = (work)

Divide each side by (power) : time = (work) / (power) =

(360,000 J) / (200 W) = 1,800 sec

= 30 minutes