Question

What is the force, in terms of Coulomb's constant, between two electrical charges of `-105 C` and `-15 C` that are `15 m` apart?

Answer 1

`F_c=7*k " you can write " 9.10^9 " instead of k"`

Explanation:

`"force between two charges is given by :"F_c=(k*q_1*q_2)/d^2`
`F_c=(k(-105)*(-15))/15^2`
`F_c=(k*105*cancel(15))/cancel(15)^2`
`F_c=(k*105)/15`
`F_c=7*k " you can write " 9.10^9 " instead of k"`