The safety items such as eye washing station, fire blanket, and the class shower.
So lunar eclips earth between sun and moon
Solar eclips moon between sun and earth.
About the 3th.. im not sure, it depends on if you meen a total solar eclips or not... i think total is more rare then a lunar eclipse..
Well i don’t know i’m just doing this so i get my stuff done
Angular momemtum : mass * tangential speed * distance to the center = 50*2.1*3.6=37800 J.s