The average density of Earth is

PHYSICS · Single correct · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

The average density of Earth is 5.52×103 kg m−35.52\times10^{3}\,\text{kg\,m}^{-3}, whereas that of a neutron star is about 3.5×1017 kg m−33.5\times10^{17}\,\text{kg\,m}^{-3}. By how many orders of magnitude is the neutron star denser than Earth (use the usual rounding rule for order of magnitude)? (a) 15 (b) 14 (c) 13 (d) 12

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