<p>PR Physics, p177
it says parallel plate capacitor: C=(E(subscript0)A)/d
the e is a weird symbol, i’m not sure if It is EMF or something else.
What does E(subscript0) represent?</p>
<p>p255:
x = Acos(2pift + /o/) /o/=O with cross through it
what does this mean?
they say /o/ is the phase, and if x=A at t=0 using the cosine version would mean /o/=0=0.
Can someone explain that to me?</p>
<p>p343
KEavg = 3/2K(subscriptB)T
What is KsubscriptB?</p>
<p>THanks :)</p>
<p>
</p>
<p>It represents vacuum permittivity. [Vacuum</a> permittivity - Wikipedia, the free encyclopedia](<a href=“http://en.wikipedia.org/wiki/Vacuum_permittivity]Vacuum”>Vacuum permittivity - Wikipedia)</p>
<p>
</p>
<p>This is Boltzmann’s Constant. [Boltzmann</a> constant - Wikipedia, the free encyclopedia](<a href=“http://en.wikipedia.org/wiki/Boltzmann’s_constant]Boltzmann”>Boltzmann constant - Wikipedia)</p>
<p>Thanks, just what I was after :)</p>
<p>Any idea for the middle q?</p>
<p>The o with the line through it is the greek letter phi, usually used to denote “phase shift”. If you remember that f(x+h) just shifts the graph of the function f(x) to the left or right, that’s all that the phase shift does. In this case, the phase shift moves the cosine curve to the right or left.</p>