FE Civil Exam Prep 44, Fluid Properties — Density, Viscosity, Surface Tension

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The critical difference between mass density (ρ) and specific weight (γ) is the inclusion of gravity (g), a common exam tripwire. - Specific gravity (SG) is a unitless ratio comparing a substance's density to that of water, simplifying calculations with water's known constants (62.4 lb/ft³ or 9,810 N/m³). - Differentiating between dynamic viscosity (μ) and kinematic viscosity (ν) is crucial; always check the units given in the problem (e.g., Pa·s vs. m²/s) to select the correct formula. - Exam problems test viscosity primarily through Reynolds number calculations, where using the wrong viscosity leads to an incorrect flow regime classification. - The Bulk Modulus (K) quantifies a fluid's compressibility; a high K value, like water's, signifies that it can be treated as incompressible for most FE exam problems. For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep