The terminal velocity of a particle moving through a fluid varies as dp n. What is the value of n' for Newton's law regime ?
Correct answer: A. 0.5
- A. 0.5
- B. 1
- C. 1.5
- D. 3
Explanation
In the Newton regime, drag varies as dₚ²v², while particle weight varies as dₚ³. Equating them gives terminal velocity proportional to dₚ^(1/2), so n = 0.5.
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