help me with my physics class

F=k k=9X109. 2 the Charge 7 1: a charge; q2 = the second charge; r = W S distance between charges; F = force between 1- TW0 electrons (1.6 x 10 \"90) in an atom are separated by 3.4 x 1011 betWeen them? is it att m. What is the electrostatic force ractive or repulsive? 2- TW0 protons in a m olecule are separated by a distance of 3.8 x 10'10 exerted by one pro m. Find the eiectrostatic force ton on the other. Is it attractive or repulsive? 3- What is the magnitude of the force betwe -3 _ en a charge of 7.5 x 10 C and a charge of 3.9 x 10 4 C that are separated by 2.0 meters? Is it attracti ve or repulsive? . 3 _ 4- What IS the magnitude of the force between a charge of 7.5 x 10 C and a charge of 3.9 x 10 4 C that are separated by 4.0 meters? Is it attractive or repulsive? -3 -4 5. What is the magnitude of the force between a charge of -7.5 x 1 0 C and a charge of 3.9 x 10 C that are separated by 6.0 meters? Is it attractive or repulsive? 3 4 6. What is the magnitude of the force between a charge of 7.5 X 10 C and a charge of 7.8 x 10 C that are separated by 2.0 meters? is it attractive or repulsive? 7. A 6.7 \"C charge is located 5.0 m from a 8.4 \"C charge. Find the electrostatic force exerted by one charge on the other. Is it attractive or repulsive? 8. A proton experiences a repulsive force of 0.95 N from an object which is 0.3 m away. What is the charge on the object? . 6 . _6 9. What is the distance between two charges, one that IS 2.5 x 10 C and the other With 4 x 10 0, when the force between them is 0.70M