We do not care if it is a proton or an electron or a uranium nucleus at point x, call the charge at x Q
we do not care if k is 9 * 10^9 or just k
we do not care if they are nC or C, just their ratio matters :)
we do not care if it is meters or centimeters or miles
only ratios matter here
we want the point where the electric field due to the two charges is zero
k * 2.1* Q / x^2 - k*4.41 * Q/ (x-2.45)^2 = 0
2.1/x^2 = 4.41/(x-2.45)^2 for answer in centimeters
https://www.mathsisfun.com/quadratic-equation-solver.html
Consider two charges, where one (+2.10 nC) is at the origin and the other (-4.41 nC) is at the position x = 2.45 cm.
Find the x-coordinate where a proton would experience zero net force.
1 answer