Intermolecular Forces and Elasticity
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Questions and Answers

What determines how a body changes shape or size when external forces act on it?

  • Intermolecular forces
  • Stress
  • Plasticity
  • Elasticity (correct)
  • Which type of stress is defined as the restoring force per unit area perpendicular to the body’s surface?

  • Elastic stress
  • Compressive stress
  • Tensile stress
  • Normal stress (correct)
  • Which type of body returns to its original configuration immediately and completely after a deforming force is removed?

  • Plastic body
  • Flexible body
  • Inelastic body
  • Elastic body (correct)
  • What are the forces between a body’s atoms or molecules that determine how it changes shape or size?

    <p>Intermolecular forces</p> Signup and view all the answers

    What is the inability of a body to return to its original size and shape after a deforming force is removed?

    <p>Plasticity</p> Signup and view all the answers

    Which materials are given as examples of nearly elastic materials?

    <p>Quartz and Phosphor bronze</p> Signup and view all the answers

    What is defined as the ratio of the internal force produced when a substance is deformed to the area over which this force acts?

    <p>Stress</p> Signup and view all the answers

    What are intermolecular forces?

    <p>Forces exerted by neighboring molecules on each molecule</p> Signup and view all the answers

    What type of forces are atomic forces with a short range?

    <p>Elastic forces</p> Signup and view all the answers

    What does plasticity refer to in terms of a body's response to external forces?

    <p>Inability to return to original size and shape</p> Signup and view all the answers

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