Physics

Two identical charges repel each other with a force of 10-5 N when they are 20 cm apart.

a.) What is the force on each when they are 5 cm apart?
b.) When they are 100 cm apart?

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asked by Mel
  1. 1/4 the distance? must be 16 times as great.
    4 times as far? must be 1/16 as much

    F=kQq/distance^2

  2. 25

    300

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