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Question
Answer
Equation 1,
F=k/d^2
F=k/(5)^2
Equation 2,
F-0.02= k/(6)^2
Use this 2 equation to find constant k,
you will get k = 1.6
Answering the question, k=1.6
F= k/d^2
1 = 1.6 /d^2
d = 1.3cm