Acar travels a total of 2,500,000 meters. how many kilometers did the car travel?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight