Answer: Sodim hydroxide have a formula of NaOH . So the elements present in the compound is sodium,oxygen and hydrogen.
Explanation:
I believe it is Acoustics, the real name for it would be like Reverberation. But go with Acoustics. :)
Mgh= 1/2 m v^2
gh= 1/2 v^2 9.8 * 8= 1/2 v^2
solve for v
V = sqrt(2gH)where H = 8 m.
Answer:
3.39 mins.
10m/s multiplied by 6 equals to 60 seconds or 1 minute