Can someone me in physical science

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

By what primary heat transfer mechanism does the sun warm the earth?