Explanation:
For example, when a drum is struck, the flexible skin (sometimes called a membrane) of the drum vibrates. The compression and expansion of the air on either side of the vibrating membrane produces differences in air pressure. The pressure differences generate a sound wave that propagates outward from the drum surface.
Answer:
Your teacher is out of her/his mind, what is he thinking
Explanation:
my dear friend, i feel sorry for you, poor thing T_T
Answer: the conclusion is that
Explanation:
Answer:
B. fitness goal I believe. please like this, I need points. ty!
Explanation: