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Question: 
  1. What would be the radius of the Earth if it had its actual mass but had the density of nuclei?
  2. By what factor would the radius of a ${^{238}_{92}\textrm{U}}$ nucleus increase if it had the Earth’s density?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. $180 \textrm{ m}$
  2. $3.5 \times 10^4$

Giancoli 7th Edition, Chapter 30, Problem 7

(3:29)

Chapter 30, Problem 7 is solved.

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