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At sea level, the pressure of the atmosphere is about __________ kg per square centimeter, or __________ pounds per square inch.

A) 1 kg per square centimeter; 14.7 pounds per square inch
B) 0.1 kg per square centimeter; 1.47 pounds per square inch
C) 0.01 kg per square centimeter; 0.147 pounds per square inch
D) 10 kg per square centimeter; 147 pounds per square inch

Answer :

Final answer:

The atmospheric pressure at sea level is approximately 1 kg per square centimeter or 14.7 pounds per square inch, corresponding to answer choice A.

Explanation:

At sea level, the pressure of the atmosphere is about 1 kg per square centimeter or 14.7 pounds per square inch. Therefore, the correct answer is A) 1 kg per square centimeter; 14.7 pounds per square inch. Atmospheric pressure is a fundamental concept in physics, which describes the force exerted by the weight of the atmosphere on Earth's surface. This pressure can be measured using various units, but two of the most common are kilograms per square centimeter (kg/cm²) and pounds per square inch (psi).

Understanding atmospheric pressure is crucial because it affects everything from weather patterns to the physiology of living organisms. The weight of the air column above a unit area at sea level results in this standard atmospheric pressure, which humans and other life forms on Earth have adapted to. Devices like barometers are used to measure this pressure, and it serves as a reference point for various scientific, engineering, and daily life applications.

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