9. What is the gravitational force between two steel balls which are 2.5 kg each that are 5.0 m apart?

10. A satellite orbits Neptune 6500 km above its surface. Given that the mass of Neptune is kg and the radius of Neptune is m, calculate the orbital speed of the satellite.

11. A satellite orbits Jupiter 2.85 x 10⁴km above its surface. Given that the mass of Jupiter iskg and the radius of Jupiter ism, calculate the period of orbit of the satellite.

note: it would be greatly appreciated if you could type out the solutions :)