A Uniform U-Tube Is Partially Filled with Water

question 11

Multiple Choice

A uniform U-tube is partially filled with water.Oil, of density 0.75 g/cm³, is poured into the right arm until the water level in the left arm rises 3 cm.The length of the oil column is then:

• A)2.25 cm
• B)8 cm
• C)6 cm
• D)4 cm
• E)need to know the cross-sectional area of the U-tube