Questions 1-3 with work

Worksheet - Coulomb's Law 1. A negative charge of - 2.0 C and a positive charge of 3.0 C are separated by 80 m. What is the force between the two charges? 2. A negative charge of - 0.0005 C exerts an attractive force of 9.0 N on a second charge that is 10 m away. What is the magnitude of the second charge? 3. Two negative charges that are both - 3.0 C push each other apart with a force of 19.2 N. How far apart are the two charges