Hewitt Problems P. 676 3-9, 11-15

3. They both can attract, the equations that characterize them have a similar format, they are both dependent on the inverse square of the distance, both exert forces

4. It has a value(we didn’t assign one) and a direction

5. Lines that show an electric field. They represent the force a test charge would feel at a location

• 6. Here are some examples

• 7. They are straight, parallel and evenly spaced, then around the ends it gets more complicated

• 8. Because the car’s metal shell would carry any electricity that might flow due to a lightning strike (not because of the rubber tires)

• 9. a. gravity cannot be shielded– B. Yes, electric fields can be shielded

• 11. Work = change in PE + any other types of energy, maybe some KE

• 12. It gets transformed into KE

• 13. Electric Potential energy is all of the energy, Electric potential is all that energy divided by the number of charges, so Energy/charge

• 14. More joules per more coulombs equals same electric potential.