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Physics 12 Online
ajek:

A sphere is constructed of two concentric parts. The inner part is a solid sphere of radius 10.0 cm made of a material with density . The outer part is a spherical shell with inner radius 10.0 cm and outer radius 20.0 cm. The material in the outer shell has a density . What is the mass of the sphere?

Joe348:

For Part B, you could do mass over volume

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