Astronomy C

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crabnebula143
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Re: Astronomy C

Postby crabnebula143 » April 27th, 2013, 7:05 pm

Thanks, AlphaTauri. The exam should be up on the test exchange soon, I already submitted it. Also take a look at my post in the Pennsylvania 2013 thread.
Thank you so much for posting it up so quickly!!

Now I know what I need to study!!
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lmatkovic3
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Re: Astronomy C

Postby lmatkovic3 » April 27th, 2013, 7:23 pm

I'll need a ruling on the meme on the cover, as well.
I like the idea of using a meme but it didn't really follow the format of the Dos Equis guy :/
Other than that, it looks good.

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EastStroudsburg13
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Re: Astronomy C

Postby EastStroudsburg13 » April 27th, 2013, 8:01 pm

I'll need a ruling on the meme on the cover, as well.
I like the idea of using a meme but it didn't really follow the format of the Dos Equis guy :/
Other than that, it looks good.
Psh, so what? It was...

I dunno, I laughed out loud when I saw it. It doesn't make that much of a difference to change it to third person, honestly. I never understood why it was so frowned upon to make slight edits to meme templates if the general idea remains.
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Re: Astronomy C

Postby JCicc » April 28th, 2013, 7:54 am

Come on, people! Two of them? X-ray binaries? "Dos equis"? Two exes? :roll:

Jeez, you're a tough crowd.

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Re: Astronomy C

Postby syo_astro » April 28th, 2013, 9:27 am

Come on, people! Two of them? X-ray binaries? "Dos equis"? Two exes? :roll:

Jeez, you're a tough crowd.
Mr. Cicc! I'm not sure if you remember me, but I'm that random kid from Syosset at the Athens invite who said how you're tests were good XD. But hey, maybe it's just hard to live up to your meme from last year ;). Should I send you feedback by PM or what? I will say this year's test is another good one :D.

I think your test last year changed my study style a bit, so I had much more of an idea of what your test this year would be like compared to last year >.< (not to mention I have to do an extra "study everything else" for NYS...). So thanks again!
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JCicc
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Re: Astronomy C

Postby JCicc » April 28th, 2013, 9:38 am

PM is fine, or you can post it right here. Whatever you prefer.

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Re: Astronomy C

Postby JCicc » April 28th, 2013, 7:20 pm

Southeastern PA regional exam is up on the test exchange.

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Re: Astronomy C

Postby lmatkovic3 » May 3rd, 2013, 5:53 pm

Thanks again for the state test. My partner spent an hour doing it and two hours going over it, adding to our notes and whatnot. We did notice, however, a typo in the key. On question #45, the key says the answer is 1.5 magnitudes, but amplitude is defined as half the distance between crest and trough, so we think it should be ~.7 magnitudes.

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Re: Astronomy C

Postby syo_astro » May 3rd, 2013, 5:57 pm

Thanks again for the state test. My partner spent an hour doing it and two hours going over it, adding to our notes and whatnot. We did notice, however, a typo in the key. On question #45, the key says the answer is 1.5 magnitudes, but amplitude is defined as half the distance between crest and trough, so we think it should be ~.7 magnitudes.
I guess maybe Cicc should explain his thoughts/whether you are right or not, but I thought since it was implying the whole pulsation sort of it was ~1.5.
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Re: Astronomy C

Postby JCicc » May 3rd, 2013, 7:17 pm

I thought the amplitude for a cepheid was the difference in magnitude at maximum and minimum. I see what you are saying in terms of mechanical wave theory, but the only evidence I can provide is that delta Cep is described as having an amplitude of nearly 1 mag, and it ranges from about 3.6 to about 4.4.


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