Two positively charged small particles, each of mass `1.7 xx 10^(-27) kg` and carrying a charge of `1.6 xx 10^(-19) C` are placed apart at a separation `r`. If each one experiences a repulsive force equal to its weight, find their separation.

Explanation

`F= ( Q_(1)Q_(2))/(4pi epsilon_(0)r^(2))`
`1.7 xx 10^(-27) xx 9.8 = ( 9. 10^(9) xx( 1.6 xx 10^(-19) ) ( 1.6xx 10^(-19)))/(r ^(2))`
`:. r = 0. 117m`