Physical Science

Blood is pumped from the heart at a rate of 5L/min into the aorta of radius 2.0cm. Assuming that the density of blood 1x103 kg/m3 .Determine the velocity of blood through
the aorta

  1. 👍 0
  2. 👎 0
  3. 👁 260
asked by Janaiby
  1. Q=vA
    Q=5L/min=8.3e-5 m^3/sec
    A= pi*r^2=3.14*4*10^-4=0.001256 m2
    v=Q/A
    v=8.3e-5/0.001256 = 0.006m/sec = 0.6cm/sec

    1. 👍 0
    2. 👎 0
    posted by najat
  2. for rate 4.5 L/min and radius r = 1.1 cm
    Given

    rate of blood pumped from the heart is = 4.5 L/min

    we know that 1 L = 1000 cm^3


    the flow rate in cm^3/s , by heart is = 4.5*1000/60 cm^3/s = 75 cm^3/!@#$%^&he area of aorta is A = pi*r^2 = pi*1.1^2 = 3.80132 cm^2


    now the rate of flow is A*v ----------(A)

    where A is area of aorta and v is speed of blood in aorta


    equating (H) to (A) ( from equation of continuity A1*V1 = A2*V2)


    75 = A*v

    v = 75/A

    v = 75/3.80132 cm/s

    v = 19.7299885303 cm/s

    1. 👍 0
    2. 👎 0
    posted by nnn

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    The human heart is a mechanical pump. The aorta is a large artery that carries oxygenated blood away from the heart to various organs in the body. For an individual at rest, the blood in the aorta (of radius 1.25 cm) flows at a

    asked by Johnny on January 17, 2013
  2. physics

    blood is pumped from the heart at a rate of 5.0l/min into the aorta (radius 1.0cm)determinethethe speed of the blood

    asked by moni on February 5, 2017
  3. Physics

    The blood flow rate through the aorta is typically 103 cm^3/s, and a typical adult has about 4.9 liters of blood. (a) How long does it take for all your blood to pass through the aorta? ___________s (b) If your aorta has a

    asked by Alex on June 6, 2012
  4. physics, I'm stuck

    In an aortic aneurysm, a bulge forms where the walls of the aorta are weakened. If blood flowing through the aorta (radius 1.0 cm) enters an aneurysm with a radius of 2.5 cm, how much on average is the blood pressure higher inside

    asked by trace on January 27, 2011
  5. physics

    The aorta carries blood away from the heart at a speed of about 43 cm/s and has a radius of approximately 1.1 cm. The aorta branches eventually into a large number of tiny capillaries that distribute the blood to the various body

    asked by archer on August 28, 2015
  6. Physics

    The radius of the aorta is about 1.2cm , and the blood passing through it has a speed of about 50cm/s . Coefficient of viscosity for the whole blood (37∘) is n = 4×10^−3 Pa⋅s. Calculate the pressure drop per cm along the

    asked by Cheese on November 13, 2014
  7. Science

    1-Which of the following is not a function of the circulatory system? D-fights infection 2-Which of the following explains why the heart is organized so that it pumps blood to two different locations? D-to provide a way for blood

    asked by Rodco on March 20, 2014
  8. Physical Education

    Suppose that blood flows through the aorta with a speed of 0.35 m/s. The cross-sectional area of the aorta is 2.0x10-4 m2. (a) Find the volume flow rate of the blood (b) The aorta branches into tens of thousands of capillaries

    asked by Janaiby on May 13, 2013
  9. Calculus

    Water is leaking out of an inverted conical tank at a rate of 10,000 cm^3/min at the same time that water is being pumped into the tank at a constant rate. The tank has height 6m and the diameter at the top is 4m. If the water

    asked by Anonymous on September 24, 2011
  10. Biology

    Hey I am doing a lab, the link is down h t t p : //w w w . sd67 . bc . ca/schools/salc/biology%2012/module%20c%20-%20human%20biology/unit%2010%20-%20respiratory%20system/Homeostasis%20Lab .pdf And I really would like help with #1

    asked by Shreya on February 7, 2013

More Similar Questions