4. + 0 -12 points SerCP11 9.P.008. Notes + A normal blood pressure reading is le

Question

4. + 0 -12 points SerCP11 9.P.008. Notes + A normal blood pressure reading is less than 120/80 where both numbers are gauge pressures measured in millimeters of mercury (mmHg). What are the absolute and gauge pressures in pascals at the base of a 0.107 m column of mercury? (The density of mercury is pHg-13.6 × 103 kg/m3. Assume the system is at sea level.) HINT (a) absolute pressure (Enter your answer to at least three significant figures.) Pa (b) gauge pressure (Enter your answer to at least two significant figures.) Pa

Explanation / Answer

a. absolute pressure at bottom of h = 0.107 m column of mercury = Pa

Pa = Po + rho*g*h

rho = 13.6*10^3 kg/m^3

Po = 1.01*10^5 Pa

Pa = 115275.512 Pa

b. gauge pressure = rho*g*h = 14275.512 Pa

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