The P-wave which is a form of body wave known as a compression or longitudinal wave.
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The type of matter that has the fastest molecules are gas. The reason for that it is because since gas particles are spread out the most, they have more room to float around. Which means that they have the fastest moving molecules.
I mostly think it is human brain waves which has the capacity to aquire signals from any regions of the universe
The fastest ground insect is the cockroach. They are capable of speeds of up to 3.4 miles per hour which equates to 50 body lengths in 1 second.
A wave of immigrants moving to the cities of the Northeast. -Apex
You don't need to "propel" something, once it is already moving. The natural tendency is for a moving object to continue moving. It requires a force to STOP a moving object, but not to keep it moving at a constant speed. Now, light behaves not just as a particle (photon) but also as a wave; but I believe that the general principle is still the same.