Recent content by allergic

1. Homework Statement : Consider two lasers, one blue and one red. Which of the two lasers has the higher intensity? 2. these are my choices: The blue one. Cannot be decided based on the information given. The red one. 3. The Attempt at a Solution : The difference between these...

My Physics TA said that a good way to think about resistors is to also think about pipes: the circuit is a pipe with water flowing thru it (water being charge) and a resistor acts like a section of pipe that is smaller than the rest... it slows down the current of charge and water. using a...

Since the function f(x)=xsin[(pi)x] oscillates, shouldn't the limit as x -> infinity not exist? i was told that it is positive infinity.

ah-ha! that would be it. i always forget that kinda stuff. thanks

alright, so i have this problem, and i must have gone wrong somewhere, because i am now lost. the problem is this: you have a canal that makes a right angle turn. the width of the canal for the incoming leg is a, and the width for the outgoing is b. what is the longest narrow barge that can...

absolutly horrible! i wouldn't be surprised if i got a two. i swear to god that e&m free response killllled me. or, i just don't know physics, which i think was the real problem :biggrin:

thanks! :)

Alright, so I've got this volume problem and it seemed really easy, only my answer is off, if only by a little bit. The problem is this: There is a tunnel, with a cross-section in the shape of a parabola, that is 5 meters wide and 10 meters high (I got the equation to be y=-1.6x^2 + 10). It...

can it be integrated from a number to anohter... say -2 and 2?

thanks that helps a lot. now i know i was missing something important..

can anyone help me derive the moment of inertia for a rectangular plate, area of ab, (with the axis through the center)? i know it ends up being (1/12)(M)(a^2+b^2) but when i try it, my a's and b's end up canceling... its craziness. also, when i try the sphere, instead of (2/5)MR^2, i...