College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Question
Chapter 13, Problem 10P
(a)
To determine
The reading of blood pressure in atmosphere unit.
(b)
To determine
The reading of blood pressure in torr unit.
(c)
To determine
The reading of blood pressure in Pascal unit.
(d)
To determine
The reading of blood pressure in N/m2 unit.
(e)
To determine
The reading of blood pressure in Psi unit.
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A sphygmomanometer is a device used to measure blood pressure, typically consisting of an inflatable cuff and a manometer used to measure air pressure in the cuff. In a mercury sphygmomanometer, blood pressure is related to the difference in heights between two columns of mercury.
The difference in mercury heights between the left tube and the right tube is h = 108 mmHg = 0.108 m, a normal systolic reading. What is the gauge systolic blood pressure Pgauge in pascals? The density of mercury is ? = 13.6 ✕ 103 kg/m3 and the ambient pressure is P0 = 1.01 ✕ 105 Pa.
You inflate the front tires on your car to 28 psi. Later,you measure your blood pressure, obtaining a reading of 120/80, the readings being in mm Hg. In metric countries (which is to say, most of the world), these pressures are customarily reported in kilopascals (kPa). In kilopascals, what are (a) your tire pressure and (b) your blood pressure?
Systemic blood pressure is expressed as the ratio of the systolic pressure (when the heart first ejects blood into the arteries{max}) to the diastolic pressure (when the heart is relaxed{min}). Systemic pressure = Systolic pressure / diastolic pressure. Both pressures are measured at the level of the heart and are expressed in millimeters of mercury although the units are not written. Normal systemic blood pressure is 120/80. What are the maximum and minimum forces (in Newtons) that the blood exerts against each square centimeter of the heart for a person with high blood pressure, 145 / 85 ?
Note: this is a conversion question...follow the units.
Answer to 2 sig figs. (1.013 x 10^5 N/m^2 = 760 mmHg =1 atm) (1m = 100 cm)
maximum force = {Systolic}
minimum force = {Diastolic
Chapter 13 Solutions
College Physics (10th Edition)
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