lung at rest
If intraalveolar pressure exceeds atmospheric pressure, air will flow out of the lungs due to the pressure gradient. This process is known as exhalation or expiration. It allows the lungs to get rid of carbon dioxide and regulate the levels of gases in the body.
When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity. This leads to a decrease in intraalveolar pressure, causing air to flow in from the atmosphere to equalize the pressure, resulting in inhalation.
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Sublimation can occur because solids have enough thermal energy to transition directly into a gas without passing through the liquid phase. This process happens when the vapor pressure of the solid exceeds the atmospheric pressure.
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the material looses its shape
When pressure is applied on the sides of a plate, the plate will experience deformation and may bend or flex. The amount of deformation will depend on the material properties of the plate and the magnitude of the pressure applied. If the pressure exceeds the strength of the plate, it may result in permanent damage or failure.
When a white dwarf exceeds the Chandrasekhar limit of about 1.4 times the mass of the Sun, electron degeneracy pressure is no longer able to support the star against gravity. This leads to the collapse of the white dwarf, resulting in a supernova explosion.
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When pressure is applied to ice crystals, they may melt and transition into water if the pressure exceeds the melting point of ice. This process is known as pressure melting. Under high pressure, ice can also transform directly into water vapor through sublimation without melting first.