NURSING EXAM QUESTIONS
PHARMACEUTICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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F/A is
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Shear stress
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Rate of shear
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Shear rate is the rate at which a fluid is sheared or “worked” during flow. In more technical terms, it is the rate at which fluid layers or laminae move past each other. Shear rate is determined by both the geometry and speed of the flow.
Detailed explanation-2: -The shear rate is the velocity of the upper plate (in meters per second) divided by the distance between the two plates (in meters). Its unit is [1/s] or reciprocal second [s-1]. According to Newton’s Law, shear stress is viscosity times shear rate.
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