Let's break down the problem step by step: ### Problem Restatement There are three objects, each with an electric charge, and the green arrows show the direction of the electric force **on** each object. Your job is to assign a charge (positive \(+\), negative \(-\), or neutral) to each object. ### Step 1: Understanding the Forces The green arrows represent the direction of the **electric force** on each object: - **Opposite charges attract.** - **Like charges repel.** ### Step 2: Analyze Each Object and Arrow Let's label the objects from top to bottom as A, B, and C. #### - **Object A** (top): - Arrow points **downward** (towards B). - This means A is being **attracted** to B **OR** **repelled** by C. #### - **Object B** (middle): - Arrow points **upward** (towards A). - This means B is being **attracted** to A **OR** **repelled** by C. #### - **Object C** (bottom): - Arrow points **upward** (towards B). - This means C is being **attracted** to B **OR** **repelled** by A. ### Step 3: Consider Possible Charge Combinations #### **Scenario 1: All charges the same** - All positive (+,+,+) or all negative (-,-,-): - All would repel each other, so forces would point **away** from each other, not toward. #### **Scenario 2: Alternating charges** - Let's try **A (+), B (-), C (+)** - A and B: A is **attracted** to B (force on A points **down** toward B, matches diagram). - B and A: B is **attracted** to A (force on B points **up** toward A, matches). - C and B: C is **attracted** to B (force on C points **up** toward B, matches). - All arrows match this pattern! ### Step 4: Assign Charges - **A = Positive (+)** - **B = Negative (-)** - **C = Positive (+)** ### Step 5: Final Answer **Top circle (A):** + **Middle circle (B):** - **Bottom circle (C):** + #### **Summary Table:** | Object | Charge | |--------|--------| | A | + | | B | - | | C | + | ### **Explanation** The force on each object points toward the oppositely charged neighbor, which matches the "opposite charges attract" rule, confirming our assignment. --- **Final answer:** - Top: Positive (+) - Middle: Negative (-) - Bottom: Positive (+)