14th Edition

ISBN: 9780133969290

Author: Hugh D. Young, Roger A. Freedman

Publisher: PEARSON

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Chapter 18, Problem 18.47P

CP BIO The Effect of Altitude on the Lungs. (a) Calculate the change in air pressure you will experience if you climb a 1000-m mountain, assuming that the temperature and air density do not change over this distance and that they were 22°C and 1.2 kg/m³, respectively, at the bottom of the mountain. (Note: The result of Example 18.4 doesn’t apply, since the expression derived in that example accounts for the variation of air density with altitude and we are told to ignore that here.) (b) If you took a 0.50-L breath at the foot of the mountain and managed to hold it until you reached the top, what would be the volume of this breath when you exhaled it there?

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Chapter 18, Problem 18.46P

Chapter 18, Problem 18.48P

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At an altitude of 11,000 m (a typical cruising altitude for a jet airliner),the air temperature is -56.5C and the air density is 0.364 kg/m3.What is the pressure of the atmosphere at that altitude? (Note: The temperatureat this altitude is not the same as at the surface of the earth, so thecalculation of Example 18.4 in Section 18.1 doesn’t apply.)

(a) Calculate the change in air pressure you’ll experience if you climb a 1000 m mountain, assuming for simplicity that the temperature and air density do not change over this distance and that they were 22C and 1.2 kg/m3, respectively, at the bottom of the mountain. (Note: The result of Example 18.4 doesn’t apply, since the expression derived in that example accounts for the variation of air density with altitude and we are told to ignore that here.) (b) If you took a 0.50 L breath at the foot of the mountain and managed to hold it until you reached the top, what would be the volume of this breath when you exhaled it there?

Q 06: Let's imagine that at the beginning of a journey a truck tire has a volume of 40,000 cm3 and an internal pressure of 180 kPa. The temperature of the tire is 16°C. By the end of the trip, the volume of the tire has increased to 45,000 cm3 and the temperature of the air inside the tire is 45°C. What is the tire pressure at the end of the journey?

Chapter 18 Solutions

University Physics (14th Edition)

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