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quantum123
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Does 1 metre cube of air really weigh 1kg?
This is so hard to believe. So heavy?
This is so hard to believe. So heavy?
No, this is a common misconception. The weight of air is affected by various factors such as temperature, pressure, and humidity, which can vary significantly. Therefore, the weight of 1 cubic meter of air can range from approximately 1.2kg to 1.3kg.
This belief is likely due to the fact that the standard weight of air used in calculations is 1kg per cubic meter at sea level and 15 degrees Celsius. This is known as the International Standard Atmosphere (ISA) and is used for simplicity in scientific calculations.
As temperature increases, the molecules in the air gain more energy and become more spread out, resulting in a decrease in air density. This means that warm air weighs less than cool air, and therefore, the weight of 1 cubic meter of air will vary depending on the temperature.
Yes, the weight of air decreases with altitude due to the decrease in air pressure. This means that 1 cubic meter of air at higher altitudes will weigh less than 1kg, while 1 cubic meter of air at sea level will weigh closer to 1kg.
The weight of air can be measured using specialized equipment such as a barometer, which measures air pressure, or a hygrometer, which measures humidity. These measurements can then be used to calculate the weight of a specific volume of air. However, it is important to note that the weight of air can vary and is not a constant value.