Time to Vacuum Fill a Rigid Building

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Discussion Overview

The discussion revolves around estimating the time it would take for air to fill a rigid building, modeled as a pyramid or orthoprism, after creating a hole in it. The inquiry is driven by curiosity about the dynamics of air movement in a vacuum scenario, with considerations of the building's dimensions and location on Earth.

Discussion Character

  • Exploratory, Conceptual clarification

Main Points Raised

  • One participant poses a question about the time required for air to fill a vacuum in a rigid building with a specified hole size.
  • Another participant notes the need for additional details, specifically the size of the building and its altitude, to provide a more accurate answer.
  • A later reply specifies the building's dimensions as an orthoprism with a length of 100m and its location at the North Pole.
  • There is a question regarding the significance of altitude in this context.
  • One participant explains that air pressure varies with altitude, suggesting that this would affect the time it takes for the vacuum to fill.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the time it would take to fill the vacuum, as the discussion highlights the need for more specific information and introduces differing factors that could influence the outcome.

Contextual Notes

Limitations include the lack of specific parameters such as the exact volume of the building and the influence of atmospheric conditions at different altitudes on air pressure.

tullyNic
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Assume a rigid building(assume the building to be like a pyramid and its empty inside) to be vacuum.
If we open a hole(about r=.5m), then, how long will it take for the air to take up of the whole space apprximately?

Will, it's just curiosity because I found a little pump in a class room could result in fast moving air in the slit around the door...

Thank you..

If the condition is not specific enough, please tell me..
 
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I won't be able to answer you directly. However you did leave out some important details. First, how big is the building? Second, where is it (on Earth - at what altitude?)?
 
... well... we can just assume it to be a orthoprism with length of 100m .
and emmm at north pole.

BTW, can you tell me why the altitude matters in this case ?
Thank you.~
 
BTW, can you tell me why the altitude matters in this case ?

Air pressure is a function of altitiude, so at higher altitudes the vacuum filling would take longer.
 

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