jeisleen7746 jeisleen7746
  • 20-02-2024
  • Physics
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What would be the radius r of a sphere of neptunium-237 that has a critical mass? Express your answer in centimeters to three significant figures.

a) 2.63 cm
b) 3.14 cm
c) 5.27 cm
d) 7.89 cm

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