I want to know how to find delta T and if the coefficient of linear expansion is
calculated by dividing delta L and the
initial length of object (Lo) and delta T? There was a disconnect previously.
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The particles of the gas inside the ball heats up, bouncing off each other and spreading farther apart.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.