Physics

Problem

Moon A of Jupiter has an orbital radius of

4.2\times10^{5}\,\text{km}

and a period of

1.8\,\text{days}

. Moon B takes

3.6\,\text{days}

to complete one orbit. The orbital radius of Moon B is closest to a)

5.9\times10^{5}\,\text{km}

8.4\times10^{5}\,\text{km}

6.7\times10^{5}\,\text{km}

7.5\times10^{5}\,\text{km}