Density: Understanding the Concept

What is density?

A) weight divided by the planet's radius.
B) mass per unit volume.
C) mass times weight.
D) size divided by weight.
E) weight per square inch.

Final answer:

D) mass per unit volume.

Density is the mass per unit volume of a substance or object. It is an important concept in physics.

Explanation: Density is the mass per unit volume of a substance or object, defined as p = m/V. The SI unit of density is kg/m³.

For example, if we have a cube with a mass of 10 grams and a volume of 5 cm³, we can calculate the density by dividing the mass by the volume: 10 g / 5 cm³ = 2 g/cm³.

Understanding density is important in various fields such as engineering, chemistry, and materials science, as it helps determine the physical properties and behaviors of different substances and objects.