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Answer:

a quantity expressing the magnitude of internal friction in a fluid, as measured by the force per unit area resisting uniform flow

Explanation:

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Answer:

Viscosity Definition Viscosity refers to the thickness of fluid. Viscosity results from the interaction, or friction, between molecules in a fluid. ... In physics, viscosity is often expressed using Isaac Newton's equation for fluids, which is similar to Newton's second law of motion.

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