(Rosin) makes (a horse hair running against a violin string) vibrate
When played with a bow, the friction of the bow (horse hair, or a synthetic material, usually rubbed with a sticky resin of some type) being pushed or pulled across the strings causes the string to vibrate, and therefore, for sound to be created.
a trombone makes a very low pitch sound and is VERY loud. and i must say annoying!! if you like it kind of makes a (deep) sqeaky sound too.
caw
The frequency of vibration depends on several factors with length being an important one. Stiffness and shape are some others.
It makes a beat type of sound
Primary waves.
secondary waves
secondary waves
"spreading"
A breeder reactor
something airtight
As far as the scientific explanation goes something that is pure is free from every type of impurities. Compounds are the mixture of different substances which makes them containing more then one single material.
The type of seismic waves that cause back and forth motions are P waves. P waves cause particles in material to vibrate back and forth.
A standing wave.
A standing wave.
Golf balls have a core of a rubbery type material, wrapped in a plastic cover. Rubber makes it bouncy.
Transverse waves vibrate up and down. Longitudinal waves vibrate parallel to the medium. Surface waves vibrate in circular motions.