Recent content by physics16102

nevermind, found the link that explains it. I would never come up with that on my own but at least I now understand the difference and why it is there

I've concluded that the calculation is correct for my problem and it is ρr/2εo. But, I don't understand where they get the R^2 in the bottom of their equation on hyperphysics. It has to come from the A part of EA=Qin/eps, but how? Shouldn't A always be in terms of the gaussian surface, which...

We posted at the same time. I did not notice that. I'll change my calculation and see what I get

When I calculate it, I get ρr/2εo. But the website above says something different, so I am clueless as to what to put if this problem were on my test tomorrow(today lol).

So I would get E(2πrL)=(ρπr^2L)/εo and E=ρr/2εo. But this website says I am wrong so I am now very confused http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elecyl.html#c3 It is saying for r<R, E should be completely different. Can someone please clear this up?

Does the size of the dielectric affect the answer? C for parallel plates= (eps)A/d I used that to get C(i) and then multiply by the dielectric coefficient, but I am still incorrect

Homework Statement The plates of a parallel plate capacitor measure 15cm x 15cm, and they are separated by 6cm. The capacitor is charged with a potential difference of 18V, then removed from the voltage source and kept isolated. A 15cm x 15cm x 3cm slab of dielectric material (k = 2.5) is...

Since r<R, R will never appear in the equation since my dA vector relates to r and Qin also relates to r. I would simply replace R with r in my equation and solve, yielding ρr/2εo. Is this logic correct? I think I just failed to remember that in the basic form of the equation, you are...

Thank you! My notes have Q varying with the amount of electric field lines, which is where I was mistaken. The problem makes sense now

If anyone knows where to start on this problem or can point me in the right direction, it would be greatly appreciated. I have access to online tutoring through cengage and two tutors were unable to help me with it so I am getting desperate.

Homework Statement An infinitely long, non-conducting cylinder of radius R carries a uniform volume charge density ρ. Find the magnitude of the electric field for 0 < r < R Homework Equations EA=Qin/εo The Attempt at a Solution I am debating whether the answer should be ρr^2/2εoR...

1. The problem statement The electric field E (arrows) is produced by a point charge. Find R in meters Homework Equations E(due to pt charge) = kq/R^2 # of field lines/unit area represents relative field strength (only statement in my notes that seems to apply to problem) The...