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Questions and Answers
Which of the following concepts is related to the resistance to flow exhibited by a fluid?
What behavior is exhibited by a fluid that becomes less viscous over time when subjected to constant stress?
Which law describes the linear relationship between the shear stress and shear rate of a fluid?
What type of fluid exhibits a constant viscosity regardless of the shear rate?
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What is the term for the point at which a material transitions from elastic to viscous behavior under stress?
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Study Notes
Fluid Dynamics
- Viscosity is the concept related to the resistance to flow exhibited by a fluid.
Non-Newtonian Fluids
- Thixotropic fluids exhibit a decrease in viscosity over time when subjected to constant stress.
Newton's Law of Viscosity
- Describes the linear relationship between the shear stress and shear rate of a fluid.
Fluid Behavior
- Newtonian fluids exhibit a constant viscosity regardless of the shear rate.
Material Behavior
- The yield point is the term for the point at which a material transitions from elastic to viscous behavior under stress.
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Description
This quiz covers the topic of rheology in pharmaceutics, focusing on the physical properties of fluid pharmaceutical products. Topics include the definition of rheology, examples of rheologic behaviors in pharmaceutical products, and the application of rheology in pharmacy.
