Part C $-$ Inclined$-$tube manometer

Determine the difference in pressure between the centers A and $B$ of the pipes shown in $($Figure $3),$ which are filled with

water and are at the same elevation. The mercury in the inclined$-$tube manometer has a specific gravity of $13\mathrm{.}55.$

Express your answer in the appropriate units to three significant figures.

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$p_B-p_A=$

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