A student observes interactions between two sets of electrically charged objects. In each set, the objects carry either a charge of -1 or +1 Coulomb. Which question can the student ask to identify the set with the stronger interaction? (1 point)
• How large are the objects in each set?
• Are the objects both positively charged or both negatively charged?
• What is the mass of each object in the interactions?
• How far apart are the objects in each interaction?