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Two electrons, each having mass 9.1 × 10-31 kg, are separated by a distance 10 Å. Calculate the gravitational force between them.

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Given, 

mass of electron (me) = 9.1 × 10-31 kg 

Distance between them(r) = 10 Å =10 × 10-10 m

G = 6.673 × 10-11 N m2 kg-2 

The gravitational force between them (Fg) is given by,

F= G x \(\frac{(m_e)(m_e)}{r^2}\)

F= 6.67 x 10-11 \(\frac{(9.1\times10^{-31})^2}{(10\,\times\,10^{-10})^2}\) = 5.52 x 10-53 N

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