A U-shaped tube open to the air at both ends contains some mercury.

A U-shaped tube open to the air at both ends contains some mercury. A quantity of water is carefully poured into the left arm of the U-shaped tube until the vertical height of the water column is hW = 23.0 cm .

What is the gauge pressure at the water-mercury interface? Put answer in three significant figures.

Calculate the vertical distance h from the top of the mercury in the right-hand arm of the tube to the top of the water in the left-hand arm.

Express your answer in centimeters to three significant figures.