Moderate

Root mean square velocity of a gas having pressure 'P' and density 'ρ' is given by:

Correct answer: A. √(3P/ρ)

  • A. √(3P/ρ)
  • B. 3Pρ
  • C. 3ρ/P
  • D. √3ρ/P

Explanation

√3P/ρ: This option represents the correct equation for the root mean square velocity of a gas. The RMS velocity is given by the formula √(3ρ/P), where ρ is the density of the gas and P is the pressure.

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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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