A fluid is undergoing incompressible flow which represents that:
Correct answer: C. The density cannot change change with time or location
- A. Pressure at a given point cannot change with time
- B. Velocity at given point cannot change with time
- C. The density cannot change change with time or location
- D. The velocity must be the same everywhere
Explanation
The density cannot change with time or location, since, this directly matches the definition of incompressible flow:𝜌=constantρ=constant everywhere and at all times.
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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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