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Estrella
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#6126
Old 02-06-2011, 05:50 AM

#3. I figure if I get caught up on section 2 then I can dive into three. xP

I already need help on HW #2. :oops:
I don't even know where to start on #8.
The momentum changed due to a force.
I'm assuming the force is due to the repulsion and the attractive forces on either side of the field.
But I don't know how to use MOMENTUM to get a force? :sweat:

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#6127
Old 02-06-2011, 06:12 AM

Ah gotcha!

Ok let me take a look real quick...
So a proton goes from 5.0E-23 to 1.5E-22 in 6.3microSeconds. This one?

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Let me draw a picture.

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#6128
Old 02-06-2011, 06:14 AM

Yes, that's the one.

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#6129
Old 02-06-2011, 06:18 AM

Ok that'll be just a minute...

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#6130
Old 02-06-2011, 06:21 AM

Hurry up slow poke! I've got three or four other things to do tonight! xD

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#6131
Old 02-06-2011, 06:22 AM

You hurry up! Sheesh... I was expecting you'd ask for number 7 :lol:

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#6132
Old 02-06-2011, 06:27 AM

We did that one in class. :lol:

9 & 10 suck, too.

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Mmm, PB&J. :drool:

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#6133
Old 02-06-2011, 06:30 AM

Oh. Oh well. I had fun with #7 anyways :lol:

9 isn't as bad as it looks and 10 is just a little more difficult.

You have a PB&J?!?! :o *makes grabby hands* GIMMIE GIMMIE!!!

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#6134
Old 02-06-2011, 06:32 AM

Mine. *smacks hands away*

*noms sandwich and sips milk*

Okay, so lay it on me nerdly!

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#6135
Old 02-06-2011, 06:34 AM

You're the devil... :stare:

Ok so... I'm a little stumped. Would you like me to get you started on 9?

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#6136
Old 02-06-2011, 06:35 AM

I guess so.

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#6137
Old 02-06-2011, 06:37 AM

Ok. So did you draw a picture?

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#6138
Old 02-06-2011, 06:38 AM

Uhm, yes, but Bruce kept it. xD [He had us turn in 9 or 10 so he could see what needed to be discussed more].
I'll redraw it real quick.

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#6139
Old 02-06-2011, 06:39 AM

:rofl: ok

The point way out there (Left or right of the axis of the dipole, whichever you chose) is going to experience the force of the E field.

So the force of the E field is going to be the sum of the field due to the positive charge and the field due to the negative charge.

What's gonna happen is we'll need to use Coulomb's Law to figure out the force at that point for both charges and then add them together. Since it's all on the axis of the Dipole you won't have to deal with Vector parts.

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In my picture the positive 6nC charge is on the left and the - one on the right and I put the point I'm trying to find the E field charge out to the right.

Last edited by Car'a'Carn; 02-06-2011 at 06:42 AM..

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#6140
Old 02-06-2011, 06:46 AM

K. I got distracted. Just hold your horses for a minute.

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#6141
Old 02-06-2011, 06:48 AM

Quote:
Badadup badadup badadup.... CWEEEE CWEEE CWEEE!!! I like Chocolate milk... Can I have some Chocolate milk?
From Cheese from Foster's Home For Imaginary Friends! Together they make BlooCHEESE and Mac&CHEESE!!! :XD

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Ok and I got 8

Last edited by Car'a'Carn; 02-06-2011 at 06:56 AM..

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#6142
Old 02-06-2011, 06:52 AM

Don't be random, you could get in trouble for that shit.

And sweet, lemme finish writing this thing up then I'll get back to the homework.
He wasn't completely happy with all parts of my lab last week so I had to rewrite. :lol:

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#6143
Old 02-06-2011, 06:54 AM

It's not random! It's CHEESE from Fosters home for Imaginary friends!!! I should probably put it in quotes come to think of it...

Aw that sucks :(

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#6144
Old 02-06-2011, 06:56 AM

It was only one part and I only had to add a few sentences.
Not too big of a deal.

I'm cold!

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#6145
Old 02-06-2011, 06:57 AM

Oh ok good! :stare: Hurry up slow poke! :XD :lol:

I'm a smidge below neutral at the moment. In other news it took me 5 tries to spell neutral correctly...

*throws a fuzzy blanket at Estrella's head* That should keep you warm!

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Last edited by Car'a'Carn; 02-06-2011 at 07:04 AM..

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#6146
Old 02-06-2011, 07:03 AM

LMAO! Haha. Way to go. :stare:

Okay, picture is drawn for number 9.
So, the magnitude of the force for the positive charge would be
Quote:
F = k (6*-6)/2.12^2
and then for negative it'd be the same except divided by 2?

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I left out units and conversions 'cause I'm too lazy to type it.

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#6147
Old 02-06-2011, 07:06 AM

ok lets see... so... No. :XD :rofl: Let me extrapolate

so you are going to use Coulomb's law except that because you are trying to find the force of the E field at a point in the field, you only need one source charge q in the equation. so it would be like this...

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#6148
Old 02-06-2011, 07:08 AM

I hate physics. :drool:

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#6149
Old 02-06-2011, 07:10 AM

force for positive charge is F=k(6)/(2.06)squared

force for negative charge is F=k(-6)/(1.88)squared

This way the resulting force will give us N/C instead of just N

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#6150
Old 02-06-2011, 07:12 AM

I don't understand the 2.06. :\
Or the 1.88.
Or for that matter why you wouldn't take the force you solved for and use E = F/q.

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Nevermind, I see where the meters are coming from.
Away from THE CENTER of the dipole.
I'm an idiot.

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I was just drawing it like it was 2m away from one of the charges. :oops:

 


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