III. Conservation of Energy -- A. Internal Energy -- 1. Ideal Gas -- 2. Nonideal Gas -- 3. Solids and Liquids -- B. Enthalpy -- 1. Ideal Gas -- 2. Nonideal Gas -- 3. Solids and Liquids -- IV. Irreversible Effects -- A. Kinetic Energy Correction -- V. Conservation of Linear Momentum -- A. One-Dimensional Flow in a Tube -- B. The Loss Coefficient -- C. Conservation of Angular Momentum -- D. Moving Boundary Systems and Relative Motion -- E. Microscopic Momentum Balance -- Summary -- Problems -- Notation -- Reference -- Chapter 6: Pipe Flow -- I. Flow Regimes -- II. General Relations for Pipe Flows