The earth has a net electric charge that causes a field at points near its surfa

Question

The earth has a net electric charge that causes a field at points near its surface equal to 150 N/C and directed in toward the center of the earth. What charge would a human with a mass of 65.0 kg have to acquire to overcome his or her weight by the force exerted by the earth's electric field? Q = _______ C What would be the magnitude of the repulsive force between two people each with the charge calculated in part A and separated by a distance of 200 m? F = _______ N Is use of the earth's electric field a feasible means of flight? Why or why not?

Explanation / Answer

QE=mg

QE=65×9.8

A) Q=65×9.8/150=4.25C

B ) F=kq1q2/r^2= 9×10^9×4.25×4.25/200×200=40.641×10^5N

C) no because it wil just help only to go up but it wil not help to accelerate

and to overcome earth gravitational force charge to be carried by plane is very large ,so to give uplift to plane its shape help is enough

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