1. One of the Mars Rover vehicles, Sojourner, collected red Martian dust on its wheels as it rolled along. There is very little water on Mars, so it's not mud; it's
actually dust. Explain, in detail, why the dust clings to the wheels. Be sure to
describe forces by name and mention charging by induction, conducting, or
rubbing, if it is appropriate. Also explain what atoms on Mars must be composed
of. (4 points)