1. The problem statement, all variables and given/known data Question Details: A hypodermic syringe is attached to a needle that has an internal radius = .300mm and Length=3.00cm The needle is filled with solution of viscosity= 2.00 x 10^(-3) Pa.S And injected at a vein with a gauge pressure of 16mm Hg What must the pressure of the fluid in the syringe be in order to inject the solution at a rate of .250 mL/s? Answer = 6850 Pa 2. Relevant equations Poisellous equation 3. The attempt at a solution I attempted to use Poisellous Law for Viscous flow this is my setup delta p = [(8/pi *delta V/ delta t)/(r4)]*L*Viscosity and here i should be able to solve for fluid pressure my gauge pressure us 16mm Hg-do i need to convert it to Pa?