Fluid Mechanics Fundamentals
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Questions and Answers

Which of the following best describes the term 'fluid'?

  • A solid material that can be easily molded
  • A substance that can flow and take the shape of its container (correct)
  • A substance that cannot be compressed or change shape
  • A liquid or gas that has a fixed volume

    • What is the primary factor that affects the viscosity of a fluid?

  • Temperature (correct)
  • Pressure
  • Density
  • Volume

    • According to Pascal's Law, what happens when pressure is applied to a confined fluid?

  • The pressure is transmitted equally in all directions (correct)
  • The fluid becomes more viscous
  • The fluid changes its state from liquid to gas
  • The fluid becomes less dense

    • What is the relationship between the density of an object and its ability to float or sink in a fluid?

    <p>The density of the object relative to the fluid determines whether it will float or sink</p> Signup and view all the answers

    What happens to the volume of a gas when pressure is applied to it?

    <p>The volume decreases</p> Signup and view all the answers

    Which of the following statements best describes the relationship between temperature and the density of a substance?

    <p>The effect of temperature on density depends on the state of the substance</p> Signup and view all the answers

    What is the primary factor that determines the flow rate of a fluid?

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

    According to Archimedes' Principle, what are the three cases of buoyancy?

    <p>Floating, sinking, and neutrally buoyant</p> Signup and view all the answers

    Explain how the properties of fluids are used in various technologies.

    <p>Fluid properties like viscosity and density are crucial in designing technologies like hydraulic systems and submarines.</p> Signup and view all the answers

    Describe what occurs when liquids and gases are compressed.

    <p>When liquids and gases are compressed, their volume decreases while pressure and density increase.</p> Signup and view all the answers

    Compare the viscosities of different fluids and explain the significance of viscosity.

    <p>Viscosity is a measure of a fluid's resistance to flow; honey has higher viscosity than water.</p> Signup and view all the answers

    Explain how changes in temperature affect the density of an object using The Particle Theory.

    <p>As temperature increases, particles in the object move faster, causing them to spread out and decrease density.</p> Signup and view all the answers

    Describe the three cases of buoyancy as per Archimedes' Principle.

    <p>Buoyancy explains why objects sink, float, or remain suspended in a fluid based on their density.</p> Signup and view all the answers

    Explain how buoyancy impacts daily life, providing an example.

    <p>Buoyancy determines whether objects like boats float or sink, influencing water transport and recreation.</p> Signup and view all the answers

    Apply Pascal's Law to explain what happens when pressure is applied to a confined fluid.

    <p>When pressure is applied to a confined fluid, it is transmitted equally in all directions, allowing for hydraulic systems to function.</p> Signup and view all the answers

    Apply the Particle Theory to explain differences in fluid flow rates.

    <p>Fluid flow rates vary based on particle arrangement and interactions; gases flow faster than liquids due to less intermolecular forces.</p> Signup and view all the answers

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