Question

Blood plasma flows with a rate of 0.3 cm³/s through a tube with a diameter d = 0.24 cm and length l = 0.9 m at a temperature of 20°C. The pressure at the tube entrance is P₂ = 1.80 x 10⁴ N/m². If the temperature of the tube and plasma reaches 27°C, what is the tube entrance pressure P₂’ needed to maintain flow rate and pressure at the tube exit constant. Consider η_20°C = 1.81 mPa ·s and η_27°C = 1.31 mPa ·s.

Select one:

a. P₂’ = 1.79 x 10⁴ N/m³

b. P₂’ = 1.78 x 10⁴ N/m³

c. P₂’ = 1.74 x 10⁴ N/m³

d. P₂’ = 1.62 x 10⁴ N/m³

Answer 1

Please see image and try to understand thanks