21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 9, Problem 39QP
(a)
To determine
Mass of carbon dioxide in kilograms.
(b)
To determine
Annual fractional increase of carbon dioxide.
(c)
To determine
How many molecules are added to the atmosphere each year?
(d)
To determine
Why the increase in carbon dioxide have big effect.
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a. The mean pressure of the surface of the Earth is 984 mbar, slightly less than the mean pressure at sea level, 1013 mbar. Use the barometric law (2.81) to calculate the mean altitude of the surface above sea level.b. Calculate the total mass of the atmosphere by considering that Force = Pressure * Area. The downward force of the atmosphere, by Newton’s Law, is the mass of the atmosphere times the acceleration of gravity. The mean pressure can be found above, and the area is the surface area of the earth. Use the average molecular weight of the atmosphere to calculate the number of moles of gas in the atmosphere.c. Use the number of moles of gas in the atmosphere and the mole fraction of N2O (Table 3.19) to calculate the number of moles and mass of N2O in the atmosphere.
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6.
=
An airplane altimeter is a gauge that indicates the height of the plane above the ground. The gauge works based
on air pressure, according to the formula h 18400 log(), where h is the height of the airplane above the
ground in metres, P is the air pressure at height h, and P。 is the air pressure at ground level. Air pressure is
measured in kilopascals (kPa).
a.
b.
Air pressure at the ground is 102 kPa. If the air pressure outside the airplane is 30 kPa, what is the
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If the plane is flying at 11 000 m, what is the air pressure outside, to one decimal?
Chapter 9 Solutions
21st Century Astronomy
Ch. 9.1 - Prob. 9.1CYUCh. 9.2 - Prob. 9.2CYUCh. 9.3 - Prob. 9.3ACYUCh. 9.3 - Prob. 9.3BCYUCh. 9.4 - Prob. 9.4CYUCh. 9.5 - Prob. 9.5CYUCh. 9 - Prob. 1QPCh. 9 - Prob. 2QPCh. 9 - Prob. 3QPCh. 9 - Prob. 4QP
Ch. 9 - Prob. 5QPCh. 9 - Prob. 6QPCh. 9 - Prob. 7QPCh. 9 - Prob. 8QPCh. 9 - Prob. 9QPCh. 9 - Prob. 10QPCh. 9 - Prob. 11QPCh. 9 - Prob. 12QPCh. 9 - Prob. 13QPCh. 9 - Prob. 14QPCh. 9 - Prob. 15QPCh. 9 - Prob. 16QPCh. 9 - Prob. 17QPCh. 9 - Prob. 18QPCh. 9 - Prob. 19QPCh. 9 - Prob. 20QPCh. 9 - Prob. 21QPCh. 9 - Prob. 22QPCh. 9 - Prob. 23QPCh. 9 - Prob. 24QPCh. 9 - Prob. 25QPCh. 9 - Prob. 26QPCh. 9 - Prob. 27QPCh. 9 - Prob. 28QPCh. 9 - Prob. 29QPCh. 9 - Prob. 30QPCh. 9 - Prob. 31QPCh. 9 - Prob. 32QPCh. 9 - Prob. 33QPCh. 9 - Prob. 34QPCh. 9 - Prob. 35QPCh. 9 - Prob. 36QPCh. 9 - Prob. 37QPCh. 9 - Prob. 38QPCh. 9 - Prob. 39QPCh. 9 - Prob. 40QPCh. 9 - Prob. 41QPCh. 9 - Prob. 42QPCh. 9 - Prob. 43QPCh. 9 - Prob. 44QPCh. 9 - Prob. 45QP
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