Two small marbles each have a mass of m = 9.0 g and an electric charge of q = +180 nC. They are placed inside a hemispherical cereal bowl with insulating inner walls, and are observed to roll around until equilibrium is reached and they come to rest. At this point in time, the separation distance between the two marbles is equal to the radius R of the bowl. What is the radius R of the bowl? For the limits check, inves- tigate what happens to the bowl's radius as the the charge on each marble becomes extremely large (q ) while all other quantities remain fixed.