1. What is Density?

Density (ρ) is a physical property of matter defined as mass per unit volume. It's a fundamental concept in physics and engineering that describes how much matter is packed into a given space.

2. How Does the Calculator Work?

The calculator uses the density formula:

Where:

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

Explanation: The equation shows the relationship between density, mass and volume. You can calculate any one variable if you know the other two.

3. Importance of Density Calculation

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

4. Using the Calculator

Tips:

1. Select which variable you want to calculate (density, mass or volume)
2. Enter values for the other two known variables
3. All values must be positive numbers
4. When calculating density or volume, the denominator cannot be zero

5. Frequently Asked Questions (FAQ)

Q1: What are common units for density?
A: The SI unit is kg/m³, but 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 is 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: How is density used in real-world applications?
A: Density is used in shipbuilding, aircraft design, material selection, quality control, and even identifying counterfeit coins.