Question

Two identical asteroids are floating in space, separated by a distance, d. The asteroids both have a charge q and a mass m. If the Coulomb force and the gravitational force are equal (thereby counteracting each other), find the charge on an asteroid as a function of mass.

As a reminder, the equation for gravitational force is mim2 12 F=Gm1m2r122.

(Can you also add a dimensional analysis please)

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