Exam 8 Target 3 Retake Preap

5 Questions | Total Attempts: 68

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Exam 8 Target 3 Retake Preap

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Questions and Answers
  • 1. 
    Gravitational force and electrical force are alike in what ways?
    • A. 

      A. They depend on charge.

    • B. 

      B. They are field forces.

    • C. 

      C. They act only when objects are touching.

    • D. 

      D. They depend on mass.

  • 2. 
    Which of the choices below best represent a difference between electric force and gravitational force?
    • A. 

      A. Electric force is inversely proportional to the square of the distance between objects.

    • B. 

      B. Gravitational force is stronger than electric force.

    • C. 

      C. Electric force can both attract and repel.

    • D. 

      D. Gravitational force exists between objects that are not touching.

  • 3. 
    Which of the following is not true for both gravitational and electric forces?
    • A. 

      A. Forces are either attractive or repulsive.

    • B. 

      B. The inverse square distance law applies.

    • C. 

      C. Forces are proportional to physical properties.

    • D. 

      D. Potential energy is a function of distance of separation.

  • 4. 
    Two 3 kg spheres each carry a charge of magnitude 3 C. How does FE, the strength of the electric force between the spheres, compare with FG, the strength of their gravitational attraction?
    • A. 

      A. FE > FG

    • B. 

      B. FE < FG

    • C. 

      C. FE = FG

    • D. 

      D. If the charges on the spheres are of the same sign, then FE > FG ; but if the charges on the spheres are of opposite sign, then FE < FG.

    • E. 

      E. Cannot be determined without knowing the distance between the spheres

  • 5. 
    When comparing the force of attraction between an electron and a proton due to the electric force and gravity, it can be concluded that
    • A. 

      A. the gravitational force is a lot stronger

    • B. 

      B. the electric force is a lot stronger

    • C. 

      C. the two types of forces are the same

    • D. 

      D. they cannot be compared

    • E. 

      E. the electric force is slightly stronger

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