I saw this video on YT shorts where the guy demonstrates how it is impossible to suck water beyond 34 feet from the level it is stored at.
[This is the YT short](https://youtube.com/shorts/rWij9gJWcTg?si=5nTRvPUVFUKSaJmH)
On Google it says that the atmospheric pressure equals the pressure exerted by water column.
I don’t understand how that matters! Because in the end the guy attached a vacuum pump to pull the water up.
Also, if the water boils then it should also make steam.
Does PV=nRT apply there? I know it’s not ideal gas but for all practical purposes we use this equation.
In: Physics
The first thing to realise is air has weight.
The atmospheric pressure of kilometers of air above you makes water stay in liquid form. Without this pressure water would turn into gas immediately without any heat at all, even at the lowest temperature possible.
Edit: apparently it does need some heat, well above absolute zero , but quite below the normal freezing point under atmosphere.
The pump creates a vacuum and thus removes the pressure that holds water in liquid form.
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