- #1

- 35

- 4

## Homework Statement

- The average pressure of the blood in a person’s arteries is 100 mmHg. What is the average pressure in an artery in the head of standing person 40 cm above the heart?
**(blood density= 1.05x103 kg/m3,Mercury density = 13.6x103 kg/m3 and g=10 m/s2)**

## Homework Equations

## The Attempt at a Solution

it is clear that I have to include both 100 mmHg and the h= 0.4m to find Pressure at head artery.

pressure heart=pressure head + pgh <-- hight of head

100x10^-3 x 10 x 13600= pressure head + (1059x10x0.4)

pressure head= 3.2. this is wrong because the answer written is 9.09 x 103 N/m2.

**Nevermind**<--**wrong calculations I divided instead of subtracting (don't know how to delete this post)**