{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Practice Exam 1-1

# Practice Exam 1-1 - Name#1(10 points Blood enters the lungs...

This preview shows pages 1–3. Sign up to view the full content.

Name_________________________________________________ #1 (10 points) Blood enters the lungs from the pulmonary artery with a mean pressure of 15 mm Hg. After passage through the lungs, the blood returns to the left atrium through the pulmonary vein with a mean pressure of 2 mm Hg. Cardiac output is 5 L/min, and the diameters of the pulmonary artery and pulmonary vein are 2.5 cm and 3.0 cm, respectively. The density of blood is 1.056 g/cm 3 and the viscosity of blood is 3.0 cP. Calculate: A) (2 pts) The mass flow rate of blood, m & = ___________________________ g/min B) (5 pts) The dimensionless Reynolds number ( μ ρ vD = Re ) in the pulmonary artery Re PA = _____________________________________________ and in the pulmonary vein Re PV =______________________________________________ Hint: The velocity, v , can be found using the definition of volumetric flow rate, Av V = & , where the area, 2 4 D A π = . C) (3 pts) Consider the blood entering and leaving the lungs similar to fluid flowing through a cylindrical pipe. What must the height, h , of the column of fluid be if the pressure of the blood entering the lungs is defined as the hydrostatic pressure? h = ______________________________________________________ cm Additional information: 1 cP = 0.01 g/cm·s g = 980.66 cm/s 2 1 N = 10 5 g·cm/s 2 1 mm Hg = 0.0133 N/cm 2

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Name_________________________________________________ #2 (10 points) Solid calcium fluoride (CaF 2 ) reacts with sulfuric acid to form solid calcium sulfate and gaseous hydrogen fluoride. The HF is then dissolved in water
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 6

Practice Exam 1-1 - Name#1(10 points Blood enters the lungs...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online