The correct answer is B) Ultraviolet light source. Hope this helps.
Highest elevation is 349
Contour interval is 50
Salt is the solute in that situation
Answer:

Explanation:
Since there's no external force beside gravity acting on the rod, we can use the law of energy conservation to calculate for the speed of rod center of gravity before hitting the surface.
Also as the rod is uniform and this, its center of gravity is at distance h/2 from the surface.



