Question: A housefly walking across a clean surface can accumulate a significant positive or negative charge. In one experiment, the largest positive charge observed was +

A housefly walking across a clean surface can accumulate a significant positive or negative charge. In one experiment, the largest positive charge observed was +73pC. A typical housefly has a mass of 12 mg . What magnitude and direction of an electric field would be necessary to "levitate" a housefly with the maximum charge? Could such a field exist in air?
(4)
A housefly walking across a clean surface can

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