Which of the following technologies is based on the work of marie sklodowska-curie?

If your workout exceeds an hour you should substitute "a sports drink" for water.hope my answer has you : )

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.