Question

Calculate the Coulomb force between 2 alpha particles separated by 3.2×10^-15 m in air

Answer 1

Answer:

k 10⁻⁸

Explanation:

Charge of alpha particle = 2 * charge of an electron/proton

                                        = 2* 1.6*10⁻¹⁹

                                    Q    = 3.2*10⁻¹⁹

Coulomb force

F = k q₁q₂/r²                         k = 1/4πε₀

  = k QQ/r²

  = k 3.2*10⁻¹⁹*3.2*10⁻¹⁹/3.2*10⁻¹⁵*3.2*10⁻¹⁵

  = k 10⁻⁴*10⁻⁴

  = k 10⁻⁸