7.1 - Fields

• The force felt in a force field is a non-contact force. True or false?

  True
• Is force a vector or scalar quantity?


  Vector
• What are some similarities between electrostatic and gravitational forces?

  - Inverse square force laws

  - Potential Concept

  - Equipotential surfaces

  - Use of field lines
• What are some differences between electrostatic and gravitational forces?


  The gravitational forces from masses always attract, whilst charges may repel or attract