Two particles, one with charge −5.45×10⁻⁶C and the other with charge 7.75×10⁻⁶C, are 0.0434 m apart. What is the magnitude of the force that one particle exerts on the other? Two new particles with identical positive charge q₃​ are placed the same 0.0434 m apart. The force between them is measured to be the same as that between the original particles. What is q₃​?