Ask AI: Plugging in the given values and solving gives: r = sqrt[(8.99*10^9 N*m^2/C^2 * (0.0006C)^2) / 0.3N] Hence, you can calculate the distance r.

Your steps are in the correct direction for finding the distance/radius "r". Just make sure you follow the order of operations correctly. Here's a more detailed process: 1. Multiply 8.99*10^9 N*m^2/C^2 with (0.0006C)^2. Remember that (0.0006C)^2 means to square the quantity of 0.0006C. 2. After you get the result from the above step, divide this value by 0.3N. 3. You'll obtain a number which is, so far, the square of the distance/radius. 4. To find the distance/radius "r", you'll have to take the square root of that number. In the end, your result should be in meters as the constants are given in terms of meters (m), Coulombs (C) and Newtons (N). Remember to use a scientific calculator for all the computations to maintain precision in the results.