Name: Coulomb's Law Concept Practice Date: Three charged objects are put near each other as shown in the picture below. +2 1 meter 2 meters 1. Which way will each charge move? A- B- 2. How much bigger is the magnitude of the force between objects A and B than the force between objects B and C? Explain or show work. 3. How much force does A exert on B? G 55 4. How much must B exert on A? 5. Use your answers to 2 and 3 to figure out how much force B and C exert on each other. X +2 2 meter 1 meters 6. Which way will each charge move? X- Y- Z- 7. How much bigger is the force between objects Y and Z than the force between objects X and Y? Explain or how your work 3. How much force does X exert on Y? G 55 9. How much must Y exert on X? 10. Use your answers to 7 and & to figure out how much force Y and Z exert on each other.11. You have two negatively charged spheres hanging near each other. They each have a charge of -6.0 pC and they are 0.5 m apart. 1 pC = 1x10-6 C. What is the electric force between the two spheres? Is it attractive or repulsive? G 55 12. The charge of one electron -1.6 x 10-19 C and the charge of one proton is 1.6 x 10-19 C. What is the force between the protons in the nucleus of an oxygen atom and the closest electron to the nucleus? Assume the distance between the nucleus and the closest electron is 5.3 x 10-11 meters. There are 8 protons in an atom of oxygen. G 5S E 13. Find the force between two protons that are in direct contact with each in the nucleus of an atom. Each has a radius of 1x10""* m and a charge of 1.6x10"C. G SS E