Question

In the fall of 2002, a group of scientists at Los Alamos National Laboratory determined that the critical mass of neptunium-237 is about 60 kg. The critical mass of a fissionable material is the minimum amount that must be brought together to start a chain reaction. Neptunium-237 has a density of 19.5g/cm^3.

What would be the radius, r, of a sphere of neptunium-237 that has a critical mass?

Answer 1

@Miracrown

Answer 2

@IrishBoy123