the force between two electrons and placed in air is equal to 0.5 times the weight of an electron find the distance between two electrons
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0.5 \times 9.1 \times 10 ^{ - 31} \times 9.8 = 9 \times 10 ^{9} (1.6 \times 10 ^{ - 19})(1.6 \times 10 ^{ - 19} ) \r ^{2}
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