---
title: "A tube contains a volume of water and a volume of mercury as shown in the figure above. Both ends of the tube are open. Points A and B are at the same level and points C and D are at the same level. The distances between points A and B and the surface of the liquids are indicated: the vertical distance from the water surface to point A is \\( 0.15 \\) \\( \\text{m} \\), and the vertical distance from the mercury surface to point B is \\( 0.01 \\) \\( \\text{m} \\). Which of the following correctly relates the gauge pressures at the points shown? The density of the water is \\( 1{,}000 \\) \\( \\text{kg/m}^3 \\) and the density of the mercury is \\( 13{,}600 \\) \\( \\text{kg/m}^3 \\)."
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url: "https://nerd-notes.com/ubq/92033/"
date_modified: "2026-08-18T02:38:21+00:00"
---

# A tube contains a volume of water and a volume of mercury as shown in the figure above. Both ends of the tube are open. Points A and B are at the same level and points C and D are at the same level. The distances between points A and B and the surface of the liquids are indicated: the vertical distance from the water surface to point A is \( 0.15 \) \( \text{m} \), and the vertical distance from the mercury surface to point B is \( 0.01 \) \( \text{m} \). Which of the following correctly relates the gauge pressures at the points shown? The density of the water is \( 1{,}000 \) \( \text{kg/m}^3 \) and the density of the mercury is \( 13{,}600 \) \( \text{kg/m}^3 \).

A u-tube contains a volume of water and a volume of mercury. Both ends of the tube are open. Points A and B are at the same level and points C and D are at the same level. The distances between points A and B and the surface of the liquids are as follows: the vertical distance from the water surface to point A is \( 0.15 \) \( \text{m} \), and the vertical distance from the mercury surface to point B is \( 0.01 \) \( \text{m} \). Which of the following correctly relates the gauge pressures at the points shown? The density of the water is \( 1{,}000 \) \( \text{kg/m}^3 \) and the density of the mercury is \( 13{,}600 \) \( \text{kg/m}^3 \).

- **A.** \(P\_A\) and P\_B: P\_A \( > \) P\_B, P\_C and P\_D: P\_C \( > \) P\_D
- **B.** P\_A and P\_B: P\_A \( > \) P\_B, P\_C and P\_D: P\_C \( = \) P\_D
- **C.** P\_A and P\_B: P\_A \( = \) P\_B, P\_C and P\_D: P\_C \( = \) P\_D
- **D.** P\_A and P\_B: P\_A \( = \) P\_B, P\_C and P\_D: P\_C \( > \) P\_D

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/92033/*