Why are lunar calendars not more widely used today?

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

Which element is least likely to undergo a chemical reaction