2NO2 means that there is 2 oxygen atoms and one nitrogen with two sets of that. So its the third one
Answer:
nuclear energy.............
The net force on the hanging object is zero. If it were not zero, then the object would be accelerating in some direction.
<span>There is no special name for that. Physics is usually just concerned with "forces", and doesn't specify whether the force pushes or pulls. If you want to be more specific, you can just call it a "pulling force".
I hoped this was satisfying!:)</span>
