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What unit is the 6.6? Is it cm length?
If so, is it the difference in height between the liquid levels?
If so, then the pressure of the gas above atmospheric, measured in pascal, is hdg, where
h is the height difference in m
d is the density of the liquid in the tube in kg/m^3
g is acceleration due to gravity
This assumes the manometer tube is open at both ends.
If not, and one end is closed, the absolute pressure is just hdg.
If so, is it the difference in height between the liquid levels?
If so, then the pressure of the gas above atmospheric, measured in pascal, is hdg, where
h is the height difference in m
d is the density of the liquid in the tube in kg/m^3
g is acceleration due to gravity
This assumes the manometer tube is open at both ends.
If not, and one end is closed, the absolute pressure is just hdg.
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