PHYSICS CHALLENGE

gopunk

Lifer
Jul 7, 2001
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is there any kaplan -esqe tutoring service for physics? i don't really want another student tutoring me... i want somebody who is a professional tutor. electromagnetic waves are kicking my ass... and i don't think i'm going to get any better at it from re-reading what i've already re-read.

or, if somebody wants to explain how to do this, that would work as well:

A circular-plate capacitor has a radius R= 30 mm and a plate separation of 5.2 mm. A sinusoidal potential difference with a maximum value of 162 Volts and a frequency of 60.0 Hz is applied between the plates. Find the maximum value of the induced magnetic field (in units of pT = 10^-12 Tesla) at a radius R, the capacitor radius.
 

Heisenberg

Lifer
Dec 21, 2001
10,621
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Just out of curiousity, what year are you?

As far as tutoring, I don't really know. Just depends on what your school has. Mine isn't big enough to have professional ones, so us students are pretty much it. Can't you just go ask your prof for help if it's just one area you're having trouble with? We're always asking them stuff at my school.

As far as the problem, I can't really help with it right now. I don't have any of my books here and my brain's fried as it is. Sorry.
 

gopunk

Lifer
Jul 7, 2001
29,239
2
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i'm a junior... i took electric and magnetic fields 2 years ago, and now i have to dig all this stuff back up for use in electromagnetic waves (surprise surprise).

we don't have professional tutors either, i was looking for an outside service. i can ask the prof for help, and i do, but i need more one on one time than he can give. i mean in a class of a couple hundred, he can only afford to give so much time to one student :p
 

Heisenberg

Lifer
Dec 21, 2001
10,621
1
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Ah. You sound in about the same place I am (junior also). We don't have any professional services at our school let alone physics ones. To give you some idea of the size, my Electrodynamics class has about a dozen people in it and my Thermodynamics class has six. It's nice because we can pretty much talk to the profs whenever we want for how long as we want.
 

gopunk

Lifer
Jul 7, 2001
29,239
2
0


<< Ah. You sound in about the same place I am (junior also). We don't have any professional services at our school let alone physics ones. To give you some idea of the size, my Electrodynamics class has about a dozen people in it and my Thermodynamics class has six. It's nice because we can pretty much talk to the profs whenever we want for how long as we want. >>



you bastards :p i wish this stuff was like computer stuff, where it just comes naturally :(
 

gopunk

Lifer
Jul 7, 2001
29,239
2
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<< Me too. Of course, if it was easy, then everybody could do it. :D >>



*sigh* i just hate how some students just "get it" while i'm sitting there wondering what the hell is going on. that's why i want a professional tutor... so he/she can raise me to that level with a tailored plan of study and tutoring. would be nice...
 

spanky

Lifer
Jun 19, 2001
25,716
4
81


<< A circular-plate capacitor has a radius R= 30 mm and a plate separation of 5.2 mm. A sinusoidal potential difference with a maximum value of 162 Volts and a frequency of 60.0 Hz is applied between the plates. Find the maximum value of the induced magnetic field (in units of pT = 10^-12 Tesla) at a radius R, the capacitor radius. >>




is that english?
 

Heisenberg

Lifer
Dec 21, 2001
10,621
1
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I hear you. I never understand stuff immediately. It usually takes at least several days before I begin to figure out what I learned. I just try to remind myself that this is by no means an easy field, and there's just no way I'm going to be able to get everything the first time I see it and/or understand it completely. You just have to keep at it I guess.
 

Ameesh

Lifer
Apr 3, 2001
23,686
0
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if it makes you feel any better maxwell s stuff was the hardest stuff for me, it gets easier after that.
 

gopunk

Lifer
Jul 7, 2001
29,239
2
0


<< if it makes you feel any better maxwell s stuff was the hardest stuff for me, it gets easier after that. >>



hmm... i sure hope you're right. this is my last physics class ever :) i think i am close to solving this problem. basically i can get dV/dt, and from that i can get dE/dt, since V=Ed. then from there, it's just plugging numbers into equations :)