1. The sound pressure level p’ generated by a fan is found to depend only on the fan rotational speed ω, the fan diameter D, the air density ρ, and the speed of sound a. Express this dependence in nondimensional terms. 2. The power input to a water pump, P, depends on its efficiency η, its discharge (volume flow rate) ˙q, the pressure increase ∆p across the pump, the density of the liquid ρ, and the diameter of the impeller D. Express this dependence in nondimensional terms.
1. The sound pressure level p’ generated by a fan is found to depend only on the fan rotational speed ω, the fan diameter D, the air density ρ, and the speed of sound a. Express this dependence in nondimensional terms. 2. The power input to a water pump, P, depends on its efficiency η, its discharge (volume flow rate) ˙q, the pressure increase ∆p across the pump, the density of the liquid ρ, and the diameter of the impeller D. Express this dependence in nondimensional terms.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. The sound pressure level p’ generated by a fan is found to depend only on the fan rotational speed ω, the fan diameter D, the air density ρ, and the speed of sound a. Express this dependence in nondimensional terms.
2. The power input to a water pump, P, depends on its efficiency η, its discharge (volume flow rate) ˙q, the pressure increase ∆p across the pump, the density of the liquid ρ, and the diameter of the impeller D. Express this dependence in nondimensional terms.
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