loader  Loading... Please wait...

Question(s) / Instruction(s):

1. Collapsible plastic bags are used in hospitals for infusions. We want to use such a bag to infuse an electrolyte solution into the artery of a patient. For this, we mount the bag at a height h above the arm of a patient, as shown in the figure below. Assuming that the average gauge pressure in the artery is 13.3 kPa and the density of the electrolyte solution is 1030 kg/m3, what is the minimum height h in order for the infusion to work?
(Hint: You can treat this as a static fluid.)

2.A patient is to be injected with 0.5 L of an electrolyte solution over a time period of 30 minutes. Assuming that the solution is elevated by 1.0 m above the arm and the needle is 2.5 cm long, what inner radius should the needle have? Take the viscosity of the solution to be 1.2  10-3 Ns/m2, and assume the solution is injected into a vein, where the blood pressure is equal to atmospheric pressure.
(Hint: Treat the solution as a Newtonian fluid.)

Find Similar Answers by Subject

Student Reviews

Rate and review your solution! (Please rate on a Scale of 1 - 5. Top Rating is 5.)

Expert's Answer
Download Solution:

This solution includes:

  • Plain text
  • Cited sources when necessary
  • Attached file(s)
  • Solution Document(s)

Reach Us