The difference in blood pressure between the head and the foot of a person who is 2.00 m tall and standing up is (density of blood is 1,060 kg/m³) A) 156 mmHg. B) 142 mmHg. C) 126 mmHg. D) 102 mmHg. E) 198 mmHg.

Question

Quizplus · Accepted Answer

The difference in blood pressure (ΔP) can be calculated using the hydrostatic pressure formula ΔP = ρgh, where ρ is the density of the fluid (blood in this case), g is the acceleration due to gravity (9.8 m/s^2), and h is the height difference (2.00 m for a person standing up). Using the given density of blood as 1060 kg/m^3, ΔP = 1060 kg/m^3 * 9.8 m/s^2 * 2.00 m = 20728 Pa. To convert this to mmHg, we use the conversion factor 1 mmHg = 133.322 Pa. Therefore, ΔP = 20728 Pa / 133.322 Pa/mmHg = 155.6 mmHg, which rounds to 156 mmHg.

The Difference in Blood Pressure Between the Head and the Foot