The thermal neutron cross section of a proton is 0.33 bn. If this cross-section were to represent the circular cross-sectional area of the proton presented to the neutron beam, what would be the radius of the proton?

A)

1.2 x 10-15 m
B)

1.6 x 10-15 m
C)

3.2 x 10-15 m
D)

4.1 x 10-15 m
E)

5.2 x 10-15 m


C

Physics & Space Science

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