Compare the gravitational force on a 31 kg mass at the surface of the earth (with radius 6.4 × 106 m and mass 6 × 1024 kg) with that on the surface of the moon with mass 1 81.3 me and radius 0.27 re . what is the force on the earth? answer in units of n.

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?