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Why does in air pressure crush objects such as your desk?

Air pressure can crush objects like a desk because the weight of the air above the object creates a force pushing down on it. As the air pressure increases, this force becomes stronger, causing the object to collapse under the weight.


Why does the pressure under a train need to be low?

A low pressure under a train helps to minimize the drag force caused by air resistance, allowing the train to move more efficiently. It also reduces the risk of creating a partial vacuum underneath the train, which could impact its stability.


Why is the pressure under water greater than the pressure at the surface?

The weight of air in the Earthâ??s atmosphere is 1 kg per square centimeter at sea level. The pressure under water is greater that the pressure at the surface because of the water pressing down heavily.


What is the relationship between a fluids ability to transmit a force and its compressibility?

The compressibility of a fluid is inversely related to its ability to transmit a force. A compressible fluid will deform more easily under pressure, reducing its ability to transmit force efficiently. In contrast, an incompressible fluid maintains its volume under pressure, allowing it to transmit force more effectively.


Does air have pressure?

Yes, air has pressure. The Bernoulli's principle answers this question, of fast and slow moving air. The slower air has a higher pressure than the faster air. It's kind of like the oposite. On the wing of an airplane, the slow air under the wing has a higher pressure, so it lifts it up. The faster air on top of the wing has a lower pressure, so it doesn't have as great of a force.