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Understanding Coulomb's Law: Exploring Electrostatic Forces in Graphing Activities

Dive into Coulomb's Law through a hands-on graphing activity. You will create three mini-graphs to visualize the electrostatic forces defined as the attraction or repulsion between two point charges. Learn how the force is proportional to the product of the charges and inversely proportional to the square of the distance between them. Experience the nuances of positive and negative forces, and explore why we do not observe extraordinary effects in everyday situations due to the constant movement of charge. Get ready for a challenging and insightful exercise!

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Understanding Coulomb's Law: Exploring Electrostatic Forces in Graphing Activities

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  1. Do Now Activity Take a graphing activity and begin working on it. You will have 3 mini-graphs due in 15 minutes.

  2. Coulomb’s Law Electrostatic forces

  3. Coulomb’s Law Describes the electrostatic force (attraction or repulsion) that exists between two charges. Definition: The force of attraction or repulsion of two point charges is directly proportional to the product of the magnitude of each charge and inversely proportional to the square of the distance between them.

  4. Challenge Based on this definition, write the equation for Coulomb’s law.

  5. Calculating Electrostatic Force where ε0 = permittivity of space

  6. Meaning of Positives and Negatives A negative force implies an attractive force. The force is directed along the line joining the two charges. A positive force implies a repulsive force. The direction of each force is opposite.

  7. Light Bulb Example

  8. Light Bulb Example If the light bulbs generate such a tremendous theoretical electrostatic force, then why do we not see more dramatic effects. ANSWER: Charge does not concentrate at one location, it is constantly moving around in real time.

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