A sphere has a radius of 21 cm and a mass of 1.9 kg.Its mass density is about: A)4.9 * 10^-⁵ kg/m³ B)2.1 * 10^-4 kg/m³ C)2.0 * 10^-2 kg/m³ D)16 kg/m³ E)49 kg/m³

Question

Quizplus · Accepted Answer

The volume of the sphere is calculated using the formula V = 4/3 * π * r^3. With a radius of 21 cm (0.21 m), the volume is approximately 0.0388 m^3. The mass density is mass/volume, which is 1.9 kg / 0.0388 m^3 ≈ 49 kg/m^3.

A Sphere Has a Radius of 21 Cm and a Mass