What is the average density per cubic meter used for calculating the density of polymer?

What is the average density per cubic meter used for calculating the density of polymer?

• A. 1000 kg
• B. 1100 kg
• C. 1050 kg
• D. 1200 kg

Answer: (B)

Polymers don’t all have the same density, so for quick calculations engineers use a representative value that spans the common range. About 1.1 g per cubic centimeter is a practical average, which equals 1100 kg per cubic meter in SI units. This sits right in the middle of the typical polymer range (roughly 0.9–1.2 g/cm^3) and gives reasonable results when you don’t have the exact material specified. If you know the exact polymer, use its precise density, but when you need a convenient estimate, 1100 kg/m^3 is a sensible choice.

Polymers don’t all have the same density, so for quick calculations engineers use a representative value that spans the common range. About 1.1 g per cubic centimeter is a practical average, which equals 1100 kg per cubic meter in SI units. This sits right in the middle of the typical polymer range (roughly 0.9–1.2 g/cm^3) and gives reasonable results when you don’t have the exact material specified. If you know the exact polymer, use its precise density, but when you need a convenient estimate, 1100 kg/m^3 is a sensible choice.