phone ,massage chair, electric tooth brush
No
Yes
When something vibrates quickly, it has a higher than it does when it vibrates slowly
When someone blows on the reed the reed vibrates and so does the air inside and sound is created when something vibrates.
The air pressure rises
An acoustic medium is something that vibrates and resonates to create a pitch.
Finger yourself or use something that vibrates
When something resonates it vibrates and usually produces a strong deep sound.
1 megahertz
Things vibrate for many reasons such as a car engine when it's broken.
The frequency would be 1 million Hertz.
the faster something vibrates the hotter (increase in temperature) the object/ fluid gets.