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vibration of particles in a medium
the denser the medium, the better so a solid is the best.for example, a iron is 16* better than air.
There are no chemical changes.
They change direction, because they are accelerated by gravity.
In that case, the object's velocity won't change.
Because it is chemical change
vibration of particles in a medium
vibration of particles in a medium
B. professional
+300%
variable
An adjective is a word that best describes the salt; for example much salt, little salt, or some salt.
Turning a screwdriver.
Conservation
The matter making up the medium does not move along with the wave
Nearly everyone will accept money as payment.
It led to political change