A reasonable hypothesis would be that, nothing changes with can A (no expansion at all), and Can C is expanding, but Can B is expanding even faster than Can C. (I don't know, if this hypothesis is correct though)
The field reverses its poles, meaning that the flow of negative and positive charges will cause an overall switch in the magnetic poles of the field.
<span>The one that does not separate white light into the colors of the visible spectrum is A, rods in the retina of the human eye. The rod is a cells that can work in less extreme light than the other sort of visual photoreceptor, cone cells. Poles are generally discovered accumulated at the external edges of the retina and are utilized as a part of the fringe vision.</span>
<span>So we wan't to know which harmonic is the frequency of Fn=1056 Hz if we know that the fundamental frequency F1=528 Hz. So the frequency of n-th harmonic Fn is fundamental frequency F1 multiplied by n or Fn=n*F1. In our example we know the fundamental frequency and an overtone frequency and we want to know which harmonic it is so we are looking for n. So n=Fn/F1 and after we input our numbers we get that n=1056/528=2. So the frequency of 1056 is the frequency of the second harmonic.</span>
