To open a soda bottle, a force of 55 N is applied to the bottle opener. If the bottle opener applies a force of 675 N to the cap, what is the mechanical advantage of the bottle opener? *

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.