I am having problems with a specific calculation. I have a sheet that has the following on it:



The answer for C is wrong. If I put it in a separate file on a sheet, the number comes out correctly as 4720 fps. Can you help?

Hi. Hope that this helps:

As I know, the speed of the sound into a fluid is sqrt(K/rho)=14.9245 ft/sec, for your data and where K is the fluid bulk modulus and rho the fluid density. With your rho, in lbm/ft^3, this is the fluid density. You need g only if you have the specific weight gamma = rho/g. I know that a lot of books use rho for both: density and specific weight, and it's very confusing that notation.



Best regards.
Alvaro.

Wrote

I am having problems with a specific calculation

You are asking the volunteers to remake the document.
On the other hand, working with fluids, the source information(s) is required.

Sorry all, when I was looking at this, it was at the end of the day, and I was dead tired. I used the wrong number for the bulk modulus of water. All is fine.