Example of using the scientific method in a real life problem

To form a hypothesis on who ate the last cookie

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.)

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic