Two electrons are separated by a distance of `1Å`. What is the Coulomb force between them?

Two electrons separated by distance 'r' experience a coulomb force F between them.The coulomb force between a proton and a singly ionized helium atom separated by distance 2r is

Two charged particles are a distance 1 mm apart. Find the minimum Coulomb force between them.

Two free protons and two free electrons are separted by the same distance. Compare Coulomb's forces of repulision between the pair of protons and pair of electrons.

Two electrons separated by distance .r. experience a force F between them. The force between a proton and a singly ionized helium atom separated by distance 2r is

Two electrons separated by distance .r. experience a force F between them. The force between a proton and a singly ionized helium atom separated by distance 2r is

Karan and Arjun are two friedns of mass m_1 and m_2 respectively,separated by a distance d.What would happen to the force between them if: Distance between them is doubled.

The ratio of gravitational force and electrostatic force between two electrons separated by a distance of 10 cm is of the order of 10 ^(42 )

The force between two electrons separated by a distance r varies as