g An asteroid of mass 58,000 kg carrying a negative charge of 15 μC is 180 m from a second asteroid of mass 52,000 kg carrying a negative charge of 11 μC. What is the magnitude of the net force the asteroids exert upon each other, assuming we can treat them as point particles? (G = 6.67 × 10-11 N ∙ m2/kg2, k = 1/4 πε0 = 8.99 × 109 N ∙ m2/C2)[hint: make sure to account for both gravitational force and Coulomb force taking their directions properly]

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.