[chbot] Quad chock fish challenge

[Andrew Dachs]

Just remember that the gas danger zone is a cone extending downwards from top of the cylinders.



Sent from my iPhone

> On 25/07/2021, at 9:56 AM, Peter Harris <petes.username at gmail.com> wrote:
> 
> 
> An application of all this brain effort: I am reminded that William wanted to figure out how much gas was left in the cylinders supplying his house, these cells seem like a good fit for weighing them.
> 
>   P
> 
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