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What is the pressure at the bottom of the column of air

Conceptual Physics | 12th Edition | ISBN: 9780321909107 | Authors: Paul G. Hewitt ISBN: 9780321909107 29

Solution for problem 6RQ Chapter 14

Conceptual Physics | 12th Edition

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Conceptual Physics | 12th Edition | ISBN: 9780321909107 | Authors: Paul G. Hewitt

Conceptual Physics | 12th Edition

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Problem 6RQ

What is the pressure at the bottom of the column of air referred to in the question 1? Question 1 What is the approximate mass of a column of air 1 cm2 in area that extends from sea level to the upper atmosphere? What is the weight of this amount of air?

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What is the pressure at the bottom of the column of air referred to in the question 1 Question 1 What is the approximate mass of a column of air 1 cm2 in area that extends from sea level to the upper atmosphere What is the weight of this amount of air ANSWER: STEP 1:- The atmospheric pressure at sea level is 101000 Pa which is equals to 10.1 N/cm . As, 1 Pa = 10000 N/cm . 2 We know the formula of pressure which is, pressure = force/unit area 2 2 10.1 N/cm = 10.1 N / 1 cm . So we got to know that the force exerted by the air is 10.1 N at sea level. STEP 2:- So the mass will be, force = mass × acceleration = mass × g = mass × 9.8 2 mass = force / 9.8 = (10.1 N) / (9.8 m/s ) = 1.030 kg So the mass of the column of air is 1.030 kg. And as we got the force already which is the normal reaction one column of air will get, technically we know the weight too. The weight is 10.1 N. CONCLUSION: 2 The weight of a column of air with 1 cm area is 10.1 N and the mass is 1.030 kg.

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Chapter 14, Problem 6RQ is Solved
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Textbook: Conceptual Physics
Edition: 12
Author: Paul G. Hewitt
ISBN: 9780321909107

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