1. What is Water Density?

Definition: Density of water is its mass per unit volume, typically measured in kg/m³.

Standard Value: Pure water at 4°C has a density of ~1000 kg/m³.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density (kg/m³)
• \( m \) — Mass (kg)
• \( V \) — Volume (m³)

Explanation: The mass of water is divided by its volume to calculate density.

3. Importance of Water Density

Details: Water density affects buoyancy, fluid dynamics, and is fundamental in hydrology, engineering, and environmental science.

4. Using the Calculator

Tips: Enter the mass in kilograms and volume in cubic meters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why does water density change?
A: Density varies with temperature (max at 4°C) and purity (salinity increases density).

Q2: What's the density of seawater?
A: Typically 1020-1030 kg/m³ due to dissolved salts.

Q3: How does temperature affect density?
A: Water expands when heated (>4°C), decreasing density. Ice is less dense than liquid water.

Q4: What units are used for water density?
A: Most commonly kg/m³, but also g/cm³ (1 g/cm³ = 1000 kg/m³).

Q5: Why is 4°C special for water?
A: Water reaches maximum density at this temperature before expanding as it freezes.