PHYSICS...

Answer the folio-in; word problems. Show your solution. Uee another sheet of paper for your never. 1. A planet Mars has a mass of 6.4x1013 kg and its moon, Phobos has a mass of 9.6x1015 kg. The gravitational force between Mars and Phobos is 4.6111015 N. Find the radius of the orbit between Mars and Phobos. 2. Calculate the force of gravity of the husband and wife, the husband has a mass of 85 kg and the wife has a mass of 65 kg. They are 0.75 m apart. 3. A small sphere has a mass of 0.02 kg and the mass of large sphere is 0.4 kg. The center distance between the two spheres is 0.03 m. Calculate the gravitational force on each sphere due to each other