Question

magnitude of the electric force between the charges 0.12 C and 0.33 C at a separation of 2.5 m.

Answer 1

$kq1q2 \div r {}^{2}$
(k × 0.12 × 0.33 ) ÷ 2.5 × 2.5
(k × 0.0396 ) ÷ 6.25
0.006336k N