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.

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.