# Help in rearranging a formulae

1. Dec 28, 2013

### Fornicis

Hi all,

I was wondering if anyone could give me a hand in rearranging the following formulae to make v the subject?

PAvail = 1/2 ρAv$^{3}$C$_{p}$

This isn't for homework, its simply something I'm interested in and I would be immensely grateful to anyone who could do this for me.

Oh and before anyone says, I have tried to myself but I just want a second opinion as what it came out with for me seemed a bit off

2. Dec 28, 2013

### tfr000

v3 = (2PAvail) / (ρACp)
and then take the cube root of both sides.

Is "PAvail" five different variables, or two, or one? Hard to tell... Anyway, same answer in any case.

3. Dec 28, 2013

### Fornicis

Thats similar to what I got, though less brackets which could have resulted in miscalculations, and in this case its just one but as you said, it can be interchangeable, and that part is key :) thank you very much

4. Dec 28, 2013

### Staff: Mentor

Minor point: this is a formula. Formulae is the plural of formula.