1) Which location has the highest atmospheric pressure a) Denver, CO (1609 m abo

Question

1) Which location has the highest atmospheric pressure

a) Denver, CO (1609 m above sea level)

b) Ocean City, NJ (0 meters above sea level)

c) Death Valley, CA (86 meters below sea level)

d) Hillsborough, NJ (45 meters above sea level)

2) A water manometer and a methanol are both connected to the same gas main. Which of these is true?

a) The height measurement h (in rho*g*h) for water is higher than the one for methanol

b) The gauge pressure (rho*g*h) for both measurements are equal

c) The gauge pressure (rho*g*h) for methanol is higher than the one for water

d) The density of water is lower than the density of methanol

3) Consider a water-filled manometer, constructed to measure blood pressure via a direct connection to an artery. How tall (in cm) would such a manometer have to be to measure blood pressure as high as 195 mm Hg?

a) 0.0199 m

b) 0.276 m

c) 2.66 m

d) 1.9 x 106

4) What do you notice about the speed of water at different points along the pipe?

a) Speed is fastest when the cross-sectional area is smallest

b) Speed remains the same regardless of cross-sectional area

c) Speed is fastest when the cross-sectional area is largest

d) Speed is fastest when pressure is highest

Explanation / Answer

1: b) Ocean City, NJ (0 meters above sea level)
2: a) The height measurement h (in rho*g*h) for water is higher than the one for methanol
3: 195 mm hg= 25997.9 Pa pressure = (1000 * 9.8 *h) => h = 2.66 m . So, C
4: a) Speed is fastest when the cross-sectional area is smallest

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