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The earth has a net electric charge that causes a field at points near its surface equal to 150N/C and directed in toward the center of the earth. a) What magnitude and sign of charge would a 60 kg human have to acquire to overcome his or her weight by the force exerted by the earth's electric field? b) what would be the force of repulsion between two people each with the charge calculate in part (a) and separated by a distance of 100m? is use of the earth's electric field a feasible means of flight? why or why not?

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