Please help with these four questions

1. Using values listed in the Table of Constants, determine the gravitational force of attraction between the Earth and the Sun. 2 marks 2. In a mall parkade, a pickup truck of mass 1.8 x 103 kg is parked close to a small hatchback car of mass 9.4 x 102 kg. The gravitational force of attraction between the two vehicles is 5.6 x 106 N. How far away is the truck from the hatchback? 3. Mercury has a planetary mass of 3.20 x 1025 kg and a radius of 2.44 x 10 m. If an astronaut weighs 217 N on Mercury's surface, what is her mass? 3) 2 marks 4. The International Space Station (ISS) orbits the Earth at an altitude of 4.08 x 102 km. What is Earth's gravitational field strength on the ISS