Answer:
first
Explanation:
He was the first president, and have a great day too!
3 x 3 = 9
3 x 3 = 3 + 3 + 3 = 9
hope this helps
Yes it's true, but that doesn't last very long. It creates a compression of the molecules during exactly half of each vibe, and during the other half, it leans the other way, and the molecules spread out in what's called a "rarefaction" a region of lower-than-normal pressure. This 'train' of compressions and rarefactions is what travels through the air, away from the vibrating object, and it's what some people often call a "sound wave".
