---
title: "A large outdoor storage tank is filled with water to a depth of \\(20 \\text{ m}\\) and is open to the atmosphere at the top. The atmospheric pressure is \\(P_{atm} = 1.0 \\times 10^5 \\text{ Pa}\\), and the density of the water is \\(\\rho = 1000 \\text{ kg/m}^3\\). What is the absolute pressure at the bottom of the tank?"
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url: "https://nerd-notes.com/ubq/109407/"
date_modified: "2026-03-21T23:49:30+00:00"
---

# A large outdoor storage tank is filled with water to a depth of \(20 \text{ m}\) and is open to the atmosphere at the top. The atmospheric pressure is \(P_{atm} = 1.0 \times 10^5 \text{ Pa}\), and the density of the water is \(\rho = 1000 \text{ kg/m}^3\). What is the absolute pressure at the bottom of the tank?

A large outdoor storage tank is filled with water to a depth of \(20 \text{ m}\) and is open to the atmosphere at the top. The atmospheric pressure is \(P_{atm} = 1.0 \times 10^5 \text{ Pa}\), and the density of the water is \(\rho = 1000 \text{ kg/m}^3\). What is the absolute pressure at the bottom of the tank?

![A vertical cylindrical tank filled with water. The top of the tank is open to the atmosphere. A vertical arrow on the right side of the tank indicates the distance from the top surface of the water to the bottom, labeled h equals 20 m. A point at the center of the bottom surface of the tank is labeled Point X.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1774136969-WuXqc7.jpg)

- **A.** \(1.0 \times 10^5 \text{ Pa}\)
- **B.** \(1.2 \times 10^5 \text{ Pa}\)
- **C.** \(2.0 \times 10^5 \text{ Pa}\)
- **D.** \(3.0 \times 10^5 \text{ Pa}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/109407/*