4.6.1 Solving for D using manual iterations.4.6 Solving for pipe diameter, D (Type 3 problems).4.5.2 Solving for Q Using an Explicit Equation.4.5.1 Solving for Q (or V) using manual iteration.4.5 Solving for Flow or Velocity (Type 2 problems).4.4.4 Solving for head loss using an R package.4.4.3 Solving for head loss using an equation solver.4.4.2 Solving for headloss using an empirical approximation.4.4.1 Solving for head loss by manual iteration.4.4 Solving for head loss (Type 1 problems).4 Water flowing in pipes: energy losses.3 Hydrostatics - forces exerted by water bodies.2.2 Properties important for moving water.