The electrostatics force of repulsion between two positively charged ions carrying equal charge is `3.7xx10^(-9)N` when these are separated by a distance of `5Å`. How many electrons are missing from each ion?

Coulomb.s Law is a quantitative statement about the force between two point charges.Two ions carrying equal charges repel with a force of 1.48 x 10^(-8) N when they are separated by a distance of 5 x 10^(-10)m . How many electrons have been removed from each iron?

Potential energy of a system of charges is directly proportional to the product of charges and inversely to the distance between them.Two point charges 3 x 10^(-8) C and - 2 x 10^(-8) C are separated by a distance of 15cm. At what point on the line joining the charges the potential is zero?

What is the force between two small charged spheres having charges of 2x10^-7C and 3x10^-7C placed 30cm apart in air?

Calculate the coulomb's force between two alpha particles separated by a distance of 3.2 xx 10^(-15)m .

Force between two stationary charges, when placed in free space is 20N. If they are placed in a medium of relative permittivity 5, the force between them is

Two equal charges placed in air separated by a distance 3m repel each other with a force of 0.1 gf. Calculate the magnitude of either of the charges?