He then takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along the table by moving the magnet. This demonstrates that A. gravitational forces are contact forces. B. gravity is proportional to mass. C. magnetic forces act at a distance. D. magnetic forces act on wooden objects. Reset Submit

Question

Physics

Kira Levy

8 August, 13:06

He then takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along the table by moving the magnet. This demonstrates that A. gravitational forces are contact forces. B. gravity is proportional to mass. C. magnetic forces act at a distance. D. magnetic forces act on wooden objects. Reset Submit

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Jasiah Barrett · Answer 1

Answer is, C. Magnetic forces act at a distance, it is a non contact type of force, such that a body having similar or opposite charge with another body may experience this natural force with no physical contact whatsoever. The forces are categorized into two, force of attraction or repusion.