Question

10. Calculate the distance between an a-particle and an electron
they attract each other with a force of 6 x 10- 11 newton.
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Answer 1

Explanation:

F = ( 9 X 10⁹ Q1 X Q2)/ r²

r² =( 9 x 10⁹ x 2 x 1.6 x 10 ^-19 x 1.6 x 10 ^ - 19)/6 x 10 ^-11

= (18 x 2.56 x 10 ^ 9-19-19+11 x)/6

= 3 x 2.56 x 10^-18

r= √(3 x 256 x 10^-20)