Difference between N/m^2 and N/m^-2

[elecone]

Homework Statement

My homework questions all state pressure as N/m^-2. what's the difference between N/m^2 and N/m^-2? Thanks

Relevant Equations

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[haruspex]

Homework Statement:: My homework questions all state pressure as N/m^-2. what's the difference between N/m^2 and N/m^-2? Thanks

Pressure could be in units of $N/m^2$ or $Nm^{-2}$. They're the same thing: "Newtons per square metre".
But not $N/m^{-2}$, which would be the same as $Nm^2$.

 

[elecone]

that's perfect, thanks