Solve for A in terms of B, C, and D - BA=DE/C ; B/E=1/2 D I can't find a crash course for doing this on the internet, so if anyone could either explain how to do this and/or lead me to a tutorial that would be very nice

like poles repel so keep pushing north to north and repels funny to see this

pretty sure it's false

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach