1. The problem statement, all variables and given/known data Imagine that space invaders could deposit extra electrons in equal amounts on the earth and on your car, which has a mass of 1200kg. Note that the rubber tires would provide some insulation. How much charge Q would need to be placed on your car (same amount on earth) in order to levitate it (overcome gravity)? (Hint: Assume the separation distance is the radius of the Earth- and that the Earth's charge is sprea uniformly so it acts as if it were located at the earth's center.) 2. Relevant equations Fg =Gm1m2/ d2 and possily: F= kq1q2/d2 3. The attempt at a solution So i think you would first find the force of gravity between the earth and the car, however from there im not sure how you would determine the charge from that in order to lift the car. Could someone please help me with this part?