Please help me! ill thank everyone and give the brainiest to the best/correct answer! Tim fills a balloon with helium. He pokes a hole in the side of the balloon and the helium gas rushes out of the hole. How does pressure explain why this happens?

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)