A maintenance crew is working on a section of a three-lane highway with only one lane open to traffic. This result is much slower traffic flow. The cars on this highway behave like:
Correct answer: B. The molecules of a compressed fluid
- A. The molecules of an incompressible fluid
- B. The molecules of a compressed fluid
- C. Both (A) and (B)
- D. None of the above
Explanation
The cars on the highway behave like the molecules of a compressed fluid as they experience congestion and slower movement due to limited lane availability. In a compressed fluid, molecules are closely packed, leading to reduced mobility, similar to the restricted traffic flow on the congested highway. In contrast, the behavior of molecules in an incompressible fluid does not explain the slower traffic observed in this scenario.
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About Fluid Dynamics
Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
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