1. A patient is given sucrose intravenously. Her venous pressure is 18 mm Hg, and the elevation difference between the
intravenous needle and sucrose bottle is 0.80 m. If the rate of
sucrose flow is to be 2.0 mL/min, what should the diameter of
the 4.0-cm-long needle be? Assume the sucrose has the same
viscosity and density as blood.