Question: A hollow sphere of inner radius 8.0 cm and outer radius 9.0 cm floats half-submerged in a liquid of density 800 kg/m3. (a) What is

A hollow sphere of inner radius 8.0 cm and outer radius 9.0 cm floats half-submerged in a liquid of density 800 kg/m3.

(a) What is the mass of the sphere?

(b) Calculate the density of the material of which the sphere is made.

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