Recent content by naes213

Hey Everyone, Weird question, but has anyone who has had a concussion in the past noticed a marked degradation in their ability to preform cognitively at the same level after their concussion? The background is I hit my head on the ground yesterday and I can't get to the doctor until...

Ok, I see. That makes sense. In my situation it just so happens that the perpendicular distance is equal to the radius of the disc. In a more general scenario this would be different. Thank you!

Hi everybody, A seemingly straightforward example from lecture is causing me some confusion. The example was about calculating the angular momentum of a sliding disk (not rolling) about a point on the floor. The result given in lecture says the distance to the point on the floor is unrelated...

Thanks for the responses. I'll have to try that, awkward, that's probably what they wanted. And Mentallic, yeah i tried to avoid using a calculator since i knew they couldn't use one, but it was tempting!

Homework Statement This problem is from the 2010 AMC 12 High school math competition: A frog makes 3 jumps, each exactly 1 meter long. The directions of the jumps are chosen independently at random. What is the probability that the frog's final position is no more than 1 meter from its...

Ok, thanks for the replies.

Hmmm... ok so i guess the situation can't be stated as simply as my professor would like us to think. Phrak, your description of the two pieces of glass brings to mind a discussion of evanescent waves (with the same professor). So then its not really 100% (the sort of true part) because the...

My professor today told us to think about the following situation: If there is a 99% reflecting mirror, then if a beam of light shines on the mirror 99% of the light is reflected and 1% is transmitted. Now he says that if a second 99% reflecting mirror is placed behind the original mirror, 100%...

George Jones, Good call! I did not realize that what ice109 referred to was a title of a book and it turns out that my library has it and it seems to fit the bill for what I was looking for. Thanks for the help!

G01 thanks very much for the response...i'll definitely check out stewart's. And Ice, I am sorry if i wasn't clear, but what i meant is that there are calc III topics in my phyiscs class and i have only taken the equivalent of calc II. Thanks again!

So i was given the option of taking calc III freshmen year because of a placement test, but decided to take calc one, albeit a more advanced and theoretical calc one, but nonetheless calc one. Something i didnt forsee was my physics course advancing beyond calculus that i had learned previously...

Alright...thanks again! I think its just a matter of not over complicating things and thinking things through before trying to prove anything. Thanks!

Ah! See, i feel really dumb now...haha...thanks. Hmmm...if i were to say something like, if x<y then (1/2)x is also less than y... would i then need to prove that? Or is that "obvious" enough to just simply state? I have a feeling that stating something as obvious is blasphemous in mathematics.

Homework Statement If x and y are arbitrary real numbers with x<y, prove that there is at least one real z satisfying x<z<y Homework Equations The Attempt at a Solution The problem arises from my inexperience in rigorously proving anything. If possible a general explanation of...

First let me qualify this statement by saying that I'm certainly not an expert and am just supposing based on very minimal mathematical background. In my mind...which again may be seriously flawed...if there is an infinite sequence of numbers then each and every possible combination of...