Physics, 19.03.2020 04:43 mrus

A vacuum cleaner has an energy input of 6.5 kWh and an energy output of 5.8 kWh. The efficiency of the vacuum cleaner, to the nearest percentage, is

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A vacuum cleaner has an energy input of 6.5 kWh and an energy output of 5.8 kWh. The efficiency of t...

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