A physicist found that a force of 0.68 n was measured between two charged spheres. the distance between the spheres was 1.0 m. calculate the force between the two spheres when the distance was decreased to 0.50 m.

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22-06-2016
Physics

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A physicist found that a force of 0.68 n was measured between two charged spheres. the distance between the spheres was 1.0 m. calculate the force between the two spheres when the distance was decreased to 0.50 m.

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meerkat18 meerkat18 · Answer 1 · 2016-07-02T10:24:32+02:00

The force between two system is inversely proportional to the square the distance between them. The indirect proportion between these items may be expressed as,
F = k / d²
where k is the constant proportionality. Substituting the known values,
0.68 N = k / (1 m)² ; k = 0.68
For the second case,
F = 0.68 / (0.5 m)² = 2.72 N
Thus, the answer is 2.72 N.