1. The problem statement, all variables and given/known data An airplane is flying through a thunderstorm at a height of 1800m. If there are charge concentrations of 40 C at height 3400m within the cloud and -28 C at height 772m, what is the strength of the electric feild, E, at the aircraft? Answer in V/m 2. Relevant equations E = F/ q 3. The attempt at a solution I drew a diagram with distances and charges. I know how to find the force between the -28 charge and 40 charge by using coulomb's equation. but what do i plug in for "q" (the charge) in the E=F/q or is this approach wrong all together?