Timeline for What is the pressure at the top of a sealed tube being drawn out of water?
Current License: CC BY-SA 3.0
6 events
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| Apr 14, 2014 at 18:50 | comment | added | Chris Mueller | @shashank I'm glad I could help. The weight of the air column does exert a pressure, but it is approximately constant within tens of meters of the ground. You can see the effect if you go higher up in the atmosphere though, have a look at this portion of the Wikipedia article on atmospheric pressure to see the scale of the effect. | |
| Apr 14, 2014 at 17:38 | vote | accept | Shashank | ||
| Apr 14, 2014 at 17:16 | comment | added | Shashank | Thank you very much for your utter generosity and taking my silly question into consideration..explanation was very clear and satisfactory..thanks a lot.. One more question if that doesn't bother you, what is the philosophy behind the fact that the pressure at the bottom of a open and closed container are both same i.e equal to atmospheric pressure,when in closed container weight of the air column is doesn't affect the air inside... What if i similarly consider a water container in the bottom of ocean,what 'll be the pressure at the bottom of the container..what's physical concept govern these | |
| Apr 14, 2014 at 16:56 | comment | added | Chris Mueller | @AlanSE You are correct. I didn't bother to mention it because the post was already starting to get rather long. | |
| Apr 14, 2014 at 16:54 | comment | added | Alan Rominger | Note that the implementation of the ideal gas law here assumes constant temperature. The gas expansion will cause the temperature to fall. After a sufficient period of time, it will equalize to the environment's temperature, and the model here will become relevant. | |
| Apr 14, 2014 at 16:32 | history | answered | Chris Mueller | CC BY-SA 3.0 |