# 9b - plasma is 4.0 x 10-11 N. At how many revolutions per...

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PHY2053 – Section 6168 Quiz #9 Friday, March 19, 2004 Name_______________________________ UFID___________________ Please read the problem carefully and be sure to show all of your work. Partial credit will be given. A sample of blood is placed in a centrifuge of radius 15.0 cm. The mass of a red blood cell is 3.0 x 10 -16 kg, and the magnitude of the force acting on it as it settles out of the
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Unformatted text preview: plasma is 4.0 x 10-11 N. At how many revolutions per second should the centrifuge be operated. Solution: Find the velocity from: F c =mv 2 /r or m r F v c = = 141 m/s Find angular velocity from = v/r = 141/0.15 = 942.8 rad/s Convert to rev/s by dividing by 2 : = 150 rev/s...
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## This note was uploaded on 09/25/2011 for the course PHY 2053 taught by Professor Buchler during the Spring '06 term at University of Florida.

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