1. What is Density?

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

2. How Does the Calculator Work?

The calculator uses the density formula:

Where:

• \( density \) — Density of the substance (kg/m³)
• \( mass \) — Mass of the substance (kg)
• \( volume \) — Volume occupied by the substance (m³)

Explanation: The formula calculates how much mass is contained in a given volume of a substance, providing a measure of its compactness.

3. Importance of Density Calculation

Details: Density calculation is essential for material identification, quality control, buoyancy calculations, and various engineering applications where substance properties need to be determined.

4. Using the Calculator

Tips: Enter mass in kilograms, volume in cubic meters. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What are common units for density?
A: While kg/m³ is the SI unit, other common units include g/cm³, g/mL, and lb/ft³. The calculator uses kg/m³ for consistency with SI standards.

Q2: How does temperature affect density?
A: For most substances, density decreases with increasing temperature due to thermal expansion, except for water which has maximum density at 4°C.

Q3: What is the density of water?
A: Pure water has a density of approximately 1000 kg/m³ at 4°C, which is often used as a reference point for other substances.

Q4: Can density be used to identify substances?
A: Yes, density is a characteristic property of pure substances and can help identify materials when combined with other tests.

Q5: How is density related to buoyancy?
A: Objects float or sink in fluids based on their density relative to the fluid. Objects less dense than the fluid will float, while denser objects will sink.