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What does the term "A" represent in the equation F ∝ ηA × du/dz?

Options

  1. AVelocity gradient
  2. BArea of contact
  3. CProportionality constant
  4. DForce

Correct answer

B. Area of contact

Step-by-step solution

In the equation F ∝ ηA × du/dz , the term "A" represents the area of contact.

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