Mathematical and Physical Journal
for High Schools
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Problem P. 4292. (November 2010)

P. 4292. The blood pressure of a healthy man is 120/80 Hgmm. When intravenous (IV) therapy is carried out, some solution is given directly to the vein. From what height should the IV solution be given in order to make the fluid flow into the artery. What is the blood pressure in the vein if the IV solution flows back when the solution bag is below the height of 40 cm?

(4 pont)

Deadline expired on December 10, 2010.

Sorry, the solution is available only in Hungarian. Google translation

Megoldás. A 120 Hgmm-nek megfelelő 160 cm-es vízmagasságból. Az infúziót nem az artériákba, hanem a vénákba juttatják; ott a vérnyomás a 40 vízcm-nek megfelelő 30 Hgmm.

Statistics:

 90 students sent a solution. 4 points: 68 students. 3 points: 12 students. 2 points: 6 students. 1 point: 2 students. Unfair, not evaluated: 2 solutionss.

Problems in Physics of KöMaL, November 2010