21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 9, Problem 41QP
(a)
To determine
Pressure inside the container.
(b)
To determine
Pressure inside the container if the container if left out in an Antarctic night.
(c)
To determine
What if the walls of the container is not rigid?
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An airplane passenger has a volume V1 of air in his stomach just before the plane takes off from a sea-level airport.
a. What volume will this quantity of air have at cruising altitude at the same temperature (body temperature), in terms of V1, the pressure on the ground P1, and the cabin pressure at cruising altitude P2?
b. What is this volume, in cubic centimeters, if the initial volume is 95 cm3 and the cabin pressure drops to 7.50 × 104 Pa when the plane is at cruising altitude?
On a winter day, the air temperature is −5°C, and the humidity is 0.001 kg/m3.
(a)
What is the relative humidity (in percent)?
(b)
When this air is brought inside a building, it is heated to 35°C. If the humidity isn't changed, what is the relative humidity (in percent) inside the building?
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.
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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- A) If you are standing at the edge of a pool at sea level, standard day conditions, what pressure wouldyou feel?B) What is the pressure a swimmer would feel at the bottom of a 11-foot pool? The density of wateris 1.94 slugs/ft3.C) If the air pressure remained the same and the air temperature was 70 °F, what is the density of theair near the surface of the water?arrow_forward(a) What is the specifi c gravity of mercury, the liquid used in thermometers, if it has a density of 13.6 g/mL? (b) What is the density of ethanol if it has a specifi c gravity of 0.789?arrow_forwardSuppose a 22.5 degrees celcius car tire contains 3.75 mol of gas in a 32.5L volume. a.) What is the gauge pressure, in atmospheres, in the car tire? b.) What will the gauge pressure be if you add a quantity of gas that had a volume of 2.00L when it was at atmospheric pressure and the same temperature as the tire? Assume the temperature returns to 22.5 degrees celcius and the volume remains constant.arrow_forward
- (a) Find the average time required for an oxygen molecule to diffuse through a 0.200-mm-thick tear layer on the cornea. (b) How much time is required to diffuse 0.500 cm3 of oxygen to the cornea if its surface area is 1.00 cm2?arrow_forwardIn the deep space between galaxies, the density of atoms is 1 million atoms per m3 (i.e. there are 1 million atoms in a cubic meter), and the temperature is 3 K. (a) What is the pressure in space? (b) What volume (in cubic meters) is occupied by 100 moles of space gas? (c) If this volume is a cube, what is the length of one its sides in kilometers?arrow_forward(a) In the deep space between galaxies, me density of atoms is as low as 106atoms/m3, and me temperature is a frigid 2.7 K. What is me pressure? (b) What volume (in m3) is occupied by 1 mol of gas? (c) If this volume is a cube, what is the length of its sides in kilometers?arrow_forward
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