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Questions and Answers
What is a characteristic of an ideal fluid?
What is a characteristic of an ideal fluid?
- Its flow is steady. (correct)
- It is compressible.
- It exhibits turbulence.
- It has internal friction.
Which of the following describes the behavior of a solid when subjected to shear stress?
Which of the following describes the behavior of a solid when subjected to shear stress?
- Solids flow like a fluid under stress.
- Solids resist shear stress permanently. (correct)
- Solids can deform indefinitely.
- Solids have a constant density.
What condition must a fluid meet to be considered incompressible?
What condition must a fluid meet to be considered incompressible?
- It must have viscosity.
- Its density changes with pressure.
- It can only flow horizontally.
- Its density remains constant. (correct)
Which statement accurately pertains to the properties of fluids?
Which statement accurately pertains to the properties of fluids?
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What is true about the term 'fluid' as commonly applied?
What is true about the term 'fluid' as commonly applied?
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Study Notes
Mechanical Properties of Fluids
- Fluids move when acted upon by a force or a pressure gradient.
- Understanding fluid behavior often requires simplifying assumptions.
- An ideal fluid is defined by specific properties:
- Incompressible: Density remains constant.
- Irrotational: Fluid flow is smooth without turbulence.
- Nonviscous: No internal friction or viscosity present.
- Steady flow: Velocity at each point does not change over time.
Distinctions Between Solids and Fluids
- Solids can resist both shear stress and normal stress, a fundamental difference from fluids.
- Fluids cannot maintain a fixed shape and lack the ability to resist external shear stresses permanently.
- The term "fluid" is often associated primarily with liquids due to their definite volume and shape characteristics.
Fluid Behavior
- Fluids are characterized by:
- Static Equilibrium: They cannot oppose their static equilibrium state indefinitely.
- Containerability: Fluids can adapt to the shape of their containers.
- Gases are classified as fluids; however, they lack a definite volume and will deform under shear stress.
Additional Context
- The term fluid encompasses liquids, gases, plasma, and other substances with similar dynamic properties.
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Description
This quiz explores the mechanical properties of fluids, particularly focusing on their behavior under pressure. Understand concepts like incompressibility and irrotational flow in the context of ideal fluids. Test your knowledge on how these principles apply in real-life scenarios.
