I think atoms and molecules in matter are always in motion because of kinetic energy.
Well I think B hope this helps
Answer:
The SI unit of length verified globally is meters(m)
<span>It is used to establish and maintain a proton gradient.</span>
Answer: :)
1.) The Doppler effect is, the change in sound or light that occurs whenever there is motion between the source and its observer. The siren of the fire engine has a lower pitch as it moves away because the waves are now spread out causing a lower frequency and a lower pitch.
2.) Wave frequency is related to wave energy. Since all that waves really are is traveling energy, the more energy in a wave, the higher its frequency. The lower the frequency is, the less energy in the wave.
