Two children want to balance horizontally on a seesaw. the first child is sitting one meter to the left of the pivot point located at the center of mass of the seesaw. the second child has one-half the mass of the first child. where should the second child sit to balance the seesaw?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current