The manometer equation is $\Delta \Phi=-\Delta ho g \Delta h$, where $\Delta \Phi$ is the difference in the total pressure plus static head $(P+ho g z)$ between the two points to which the manometer is connected, $\Delta ho$ is the difference in the densities of the two fluids in the manometer, $\Delta h$ is the manometer reading, and $g$ is the acceleration due to gravity. If $\Delta ho$ is $12.6 \mathrm{~g} / \mathrm{cm}^{3}$ and $\Delta h$ is 6 in. for a manometer connected to two points on a horizontal pipe, calculate the value of $\Delta P$ in the following units: (a) dyn $/ \mathrm{cm}^{2}$; (b) pascals; (c) atm.