# 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 diameter of 2.1 cm, what is the speed of blood as it flows through the aorta?
___________cm/s

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1. (a) 4.9 l / 103 cm
=4900 ml / 103 ml
= 47.6 s

(b) cross section area
A = π2.1²/4 = 3.46 cm²
Velocity = Volume/cross section area
= 103/3.46 cm/s
= 29.7 cm/s

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posted by MathMate
2. Thank you so much!

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posted by Alex
3. You're welcome!

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posted by MathMate

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