1. What is Density?

Density is a physical property of matter defined as mass per unit volume. It's a fundamental concept in physics and engineering that helps characterize materials and predict their behavior.

2. How Does the Calculator Work?

The calculator uses the density equation:

Where:

• \( \rho \) — Density (kg/m³)
• \( mass \) — Mass of the object (kg)
• \( volume \) — Volume of the object (m³)

Explanation: The equation shows that density increases with greater mass or smaller volume, and decreases with smaller mass or greater volume.

3. Importance of Density Calculation

Details: Density is crucial for material identification, buoyancy calculations, fluid mechanics, and many engineering applications. It helps determine if objects will float or sink in fluids.

4. Using the Calculator

Tips: Enter mass in kilograms and volume in cubic meters. Both values must be positive numbers. The calculator will compute the density in kg/m³.

5. Frequently Asked Questions (FAQ)

Q1: What are common units for density?
A: While kg/m³ is the SI unit, g/cm³ is also commonly used (1 g/cm³ = 1000 kg/m³).

Q2: How does temperature affect density?
A: For most substances, density decreases with increasing temperature due to thermal expansion.

Q3: What's the density of water?
A: Pure water at 4°C has a density of 1000 kg/m³ (1 g/cm³).

Q4: Why do some objects float?
A: Objects float when their average density is less than the fluid they're placed in.

Q5: Can density be used to identify materials?
A: Yes, density is a characteristic property that can help identify pure substances.