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Coulomb's Law is a fundamental law of physics that describes the electrostatic force between two charged particles. It states that the force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
The force between two charges can be calculated using the formula F = (k * q1 * q2) / r^2, where F is the force in Newtons, k is the Coulomb's constant (9 x 10^9 N*m^2/C^2), q1 and q2 are the charges in Coulombs, and r is the distance between the charges in meters.
To find the charge of a particle using Coulomb's Law, you need to know the force between the particle and another known charge, as well as the distance between them. Rearranging the formula F = (k * q1 * q2) / r^2, you can solve for q1 or q2 depending on which charge is known.
The units of charge in Coulomb's Law are Coulombs (C). One Coulomb is equal to the charge of approximately 6.24 x 10^18 protons or electrons, which are the fundamental units of charge in the atom.
Coulomb's Law is based on the assumption that the charges are point charges, meaning they have no size or dimension. While it can still be used to approximate the force between objects with non-point charges, it becomes less accurate as the size of the charges increases. In these cases, more advanced equations and calculations may be needed.