1.I have been asked to: Calculate the density of a fluid if a ctitical velocity of 2m/s at Re=2000 in a pipe of bore 90mm at a dynamic viscosity oc 0.09cP I have calcualted the variables to SI units and found [tex]\rho[/tex]=? Um (V) =2m/s D=0.09m [tex]\mu[/tex]=0.09X10^-3 I am rearranging this formula http://www.rpgroup.caltech.edu/%7Enatsirt/aph162/webpages/F2WP2/reynoldsNumberFormula.png [Broken][/URL] 3. The attempt at a solution [tex]\rho[/tex]= (Re*[tex]\mu[/tex])/(Um*D) I keep getting 1 as the answer for the density. Have I converted something to SI units incorrectly? Thanks.