Question 1078882
The force of attraction between two magnets is inversely proportional to the square of the distance between them. When the magnets are r cm apart, the force of attraction between them is F newtons(N). If the distance between the magnets is increased by 400%, the force of attraction between them becomes cF N. Find the value of c.
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An increase of 400% --> 5 times the distance.
--> 1/25 the force.
c = 1/25