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## Homework Statement

The equation P+av

^{2}=b is dimensionally correct. P and v represent pressure and velocity respectively. The unit of ''a'' is similar to....?

The answer provided is density...

## Homework Equations

## The Attempt at a Solution

In the question... it doesn't state that what is ''b'', so should i assume that it is a constant? or there's a proper solution? Please enlighten me...