For flow of a gas in a pipe, which form of the continuity equation is more general?

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For flow of a gas in a pipe, which form of the continuity equation is more general?

a. V1A1 = V2A2

b. ρ1V1A1 = ρ2V2A2

c. Both are equally applicable

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Engineering Fluid Mechanics

ISBN: 9781118880685

11th Edition

Authors: Donald F. Elger, Barbara A. LeBret, Clayton T. Crowe, John A. Robertson

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