An electron moves through an electric field such that it slows down, losing 190J of kinetic energy. The change in potential experienced by the charge is -8V. A. What is the magnitude of the electron? B. If the positive charge of the double the magnitude of the first charge moved between the same two points in the field, determine the change in electric potential and the change in electric potential energy.(please help, I have time limit to answer this please make the solution clear)

An electron moves through an electric field such that it slows down, losing 190J of kinetic energy. The change in potential experienced by the charge is -8V. A. What is the magnitude of the electron? B. If the positive charge of the double the magnitude of the first charge moved between the same two points in the field, determine the change in electric potential and the change in electric potential energy.(please help, I have time limit to answer this please make the solution clear)