The half‐life of Uranium‐237 is 5.83 x 105 seconds. If you have a sample with 5.89 x 1024 atoms in it, how much of that sample is left after 1.75 x 106 seconds?

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.