The force of attraction that a -40 uC point charge exerts on a 108 uC point charge has magnitude 4.00 N. How far apart are these two charges

d. air pressure decreases as altitude increases.

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

moisture is lackin, and organic acids are scarce.