Humans have about v = 60 cm3 of blood per kilogra…


Question Description:

20.50

Humans have about v = 60 cm3 of blood per kilogram of body mass and blood makes a complete circuit in t = 20 s seconds. For a human body of thickness 0.2 m and height 1.8 m, estimate the change in power output of the heart when the body is standing up on a horizontal surface compared to when the body is lying down on the same surface. Assume that the density of blood is ρ = 0.001 kg/cm^3 and the mass of the human body is 70 kg. Use g = 9.8 m/s^2 Answer in units of W

Answer

20.50