Problem $8.$ You have a system according to this figure. You measure that the Pressure in Gas $1$ is $10$ psi $,$ the pressure in Gas $2$ is $14$ psi $.$ If $H_L$ is $3\mathrm{.}5ft,H_g$ is $3\mathrm{.}0$ ft $,$ and the h shown in the manometer is $0\mathrm{.}5$ ft $,$ what is the specific weight of the manometry fluid $($marked "fluid"$)?$