If a person of mass 100.0kg climbs a 2.00m high set of stairs in 4.00s, how much work do they do?

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.

How many electrons does each element require in its valence shell to become stable?

Which of these best describes the term ecliptic? a. the circle where "earth meets the sky" b. the change in azimuth and altitude of an object c. the point directly above the geographic north pole d. the path of the sun through the constellations of the zodiac