density

Suppose two worlds, each having mass M and radius R, coalesce into a single world. Due to gravitational contraction, the combined world has a radius of only 3/4R. What is the average density of the combined world as a multiple of p0, the average density of the original two worlds?

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  1. 4.74

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  2. Density(total)=4.74Density(original)

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