Question

1. the diagrams below show two charged pith balls hanging on thin threads. one ball in each diagram is shown with either a positive (+) or negative (-) charge. the arrows indicate the attraction or repulsion between the two balls. on the diagram, indicate the charge on the balls.

Explanation:

Step1: Recall Charge Interactions

Like charges repel, opposite charges attract. So if two charges attract, they are opposite; if repel, same.

Step2: Analyze Diagram A

Ball 2 is (-). Arrows show attraction (toward each other). So Ball 1 must be (+) (opposite of -).

Step3: Analyze Diagram B

Ball 2 is (+). Arrows show repulsion (away from each other). So Ball 1 must be (+) (same as +).

Step4: Analyze Diagram C

Ball 2 is (-). Arrows show repulsion (away from each other). So Ball 1 must be (-) (same as -).

Answer:

• Diagram A: Ball 1: +, Ball 2: -
• Diagram B: Ball 1: +, Ball 2: +
• Diagram C: Ball 1: -, Ball 2: -

(Note: If the question expects marking on the diagram, use the charge signs based on attraction/repulsion rules as above.)