Problem $2.(2\mathrm{.}5$ pts $.)$ The manometer in the$-$given

figure has water, mercury, and an oil, and water

inside the pipe. S is SG $($specific gravity$).$ Determine:

$(1)$ the gage pressure at pipe center A in kPa $.$

$(2)$ the gage pressure at the interface B in kPa $.$

$(3)$ the pressure at the interface C in kPa

$(4)$ the absolute pressure at the interface C in kPa $.$

$(5)$ If $Z_A=10m$ above the datum, what is the

piezometer head at point A $?$