What is the magnitude of the centripetal acceleration of an object on earth's equator owing to the rotation of earth? (b) what would the period of rotation of earth have to be for objects on the equator to have a centripetal acceleration with a magnitude of 9.80 m/s2?

What is part of a line has one endpoint and continues in one direction?

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.

Only 3% of the water on earth is usable by humans. even though that 3% is through the water cycle, we still need to be careful not to waste water.