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The basic barometer can be used as an altitude measuring device in airplanes. The ground control reports a barometric reading of 753mmHg while the pilot's reading is 690mmHg. Estimate the altitude of the plane from ground level if the average air density is 1.20 kg.m³ and the barometer fluid is mercury, PHg=13600 kg.m-³.

The basic barometer can be used as an altitude measuring device in airplanes. The ground control reports a barometric reading of 753mmHg while the pilot's reading is 690mmHg. Estimate the altitude of the plane from ground level if the average air density is 1.20 kg.m³ and the barometer fluid is mercury, PHg=13600 kg.m-³.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The basic barometer can be used as an altitude measuring device in airplanes. The ground control reports a barometric reading of 753mmHg while the pilot's reading is 690mmHg. Estimate the altitude of the plane from ground level if the average air density is 1.20 kg.m-3 and the barometer fluid is mercury, PHg=13600 kg.m3. To solve this problem determine the atmospheric pressure on the ground and then in the air using the barometric pressure readings. Then using the pressure difference between the ground and the plane, the altitude can be derived by considering a column of air from the ground up to the plane, of constant density, in a similar manner to the barometer. [h=714m]
Transcribed Image Text:The basic barometer can be used as an altitude measuring device in airplanes. The ground control reports a barometric reading of 753mmHg while the pilot's reading is 690mmHg. Estimate the altitude of the plane from ground level if the average air density is 1.20 kg.m-3 and the barometer fluid is mercury, PHg=13600 kg.m3. To solve this problem determine the atmospheric pressure on the ground and then in the air using the barometric pressure readings. Then using the pressure difference between the ground and the plane, the altitude can be derived by considering a column of air from the ground up to the plane, of constant density, in a similar manner to the barometer. [h=714m]
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