A student performed a trick using a bar magnet and a paper clip. The paper clip was attached to a piece of string that was taped to a table. The clip appears to float just below the magnet. Explain how the floating paper clip trick works. Use evidence and scientific reasoning to support your response.

Electric field of the earth. 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. (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 calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?