Answer:
The work done shall be 14715 Joules
Explanation:
The work done by a force 'F' in a displacement 'dy' is given by

At any position 'y' the weight shall be sum of weft of water and weight of string

Thus applying values we get

Sodium (Na) is very reactive because it does not have a full valence shell.
A sound wave traveling eastward through air<span> causes the air molecules to Vibrate east and west. </span>
The net force will point towards the acceleration of the object, as supported by Newton's second law.
<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>