When you stand outside your are standing in the, Stratosphere. Troposphere. Mesosphere no

An asteroid is discovered in a nearly circular orbit around the sun, with an orbital radius that is 2.47 times earth's. what is the asteroid's orbital period, its "year," in terms of earth years?

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?