A neutron star has approximately the same density as nuclear material. If a neutron star has the same mass as the Sun, 1.99 × 10³⁰kg, what would be its radius? Use the relationship r = (1.2 fm) A^1/3 together with the mass of a neutron, 1.67 × 10⁻²⁷kg, to estimate the answer.

Question

Quizplus · Accepted Answer

Using the given formula, we have:

r = (1.2 fm) * [(1.99 × 10^30 kg) / (1.67 × 10^-27 kg)]^(1/3)
r = 11.8 km (rounded to one decimal place)

Therefore, the best choice is (C) 13 km, as it is the closest option to our calculated estimate.

A Neutron Star Has Approximately the Same Density as Nuclear