A solid object is made of two materials,one material having density of 2 500 kg/m³ and the other having density of 6 500 kg/m³.If the object contains equal masses of the materials,what is its average density? A)3 611 kg/m³ B)4 500 kg/m³ C)4 611 kg/m³ D)9 000 kg/m³ E)more information is needed

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Quizplus · Accepted Answer

The average density is the total mass divided by the total volume. Since the object contains equal masses of the two materials, the total mass is the sum of the masses of the two materials. The total volume is the sum of the volumes of the two materials. The density of the first material is 2 500 kg/m^3, and the density of the second material is 6 500 kg/m^3. The volume of the first material is the mass of the first material divided by the density of the first material. The volume of the second material is the mass of the second material divided by the density of the second material. The total volume is the sum of the volumes of the two materials. The average density is the total mass divided by the total volume.

A Solid Object Is Made of Two Materials,one Material Having