Recent content by SteveDB

Hi all. It's been quite a while since I've been here, but I was reminded this morning about my childhood when a friend of mine and I got a hold of a spool of string that was purported to have been 5 miles in length. Thinking about it I think it was probably more like some 5000 feet in length...

Quinn, If your response was suppose to be to my Plasma ball posting, please go back and read it more closely-- I got an email stating you'd responded to my submission. I asked nothing about work. I asked about the physical properties of the phenomena that I witnessed when I moved my finger...

n-coupled oscillator-- both series, and parallel. Hi all. Ok, the title is a bit deceptive, as that is typically used to denote a string type oscillator system. In this case, I'm referring to multiple masses, and multiple springs. To be specific, we're doing a system with 5 masses, and 13...

I saw the post title, and had to respond. I suppose the reality of the past is based entirely on whether or not one was here to witness their version of it. I.e., were you born today, or sometime in a past where you could witness the events of that past unfold. I for one have been around for...

site for waves, and oscillations http://hyperphysics.phy-astr.gsu.edu/hbase/permot.html#permot Hope you find this helpful.

WAve function components. Each element has specific properties that contribute to the entire wave form. Go back and reread the text you're using. If it does not adequately describe the wave, locate another source. Do you have the capacity to graph this wave? Calculator, Maple, Mathmatica...

that's part of what I meant when I said that I'd taken the time derivative of the energy equation. E= m/2 (x_dot)^2 + k/2 *x^2 Based on my energy of the system, I need to then proof that the time only takes a certain amount of time to decay to 1/e. E(t)= E(0)/e Sounds like I'm not the only...

Tom, density of an element at stp is its mass/volume. Since-breathable- oxygen is 2 atoms at standard temp(293-298K) and pressure(1atm), you need to account for O2-- 16 grams per mole, i.e., n=2. Do you have the "unit" volume? nrt/p = V. you can get its atomic mass from the periodic...

hi all. Some clarification on this would be helpful to get me going in the correct direction. For a specified system, I'm trying to prove that the time it takes for the system to decay to 1/e of its original value (which works out to ~36.8%), takes a certain amount of time. The actual values...

solving perpendicular oscillation problems-- lissajous Hi all. Ok, I am not getting how we're to solve perpendicular oscillatory systems. How do the variances in frequency, and phase play into the drawing/solving of these systems? Oh, and this is not a trig class I'm doing. It's an...

ok, I just remembered something when I was looking at the Wolfram site. I actually have Abramowitz, and Stegun-- in PDF. If anyone wants it, let me know. Ok, after looking more closely to this, I see that my comments about it being similar to the trig. unit circle, are accurate. Picking the...

Ok, the second one... Argand diagram is the one I'm referring to; well, actually now that the complex pge has loaded, they both show the graph I'm referring to. Can you more succinctly explain this to me-- how it works, etc... I know that the point on the 'unit' circle is the relation of...

Thanks for the reply. Those parts I understand. I got these out of my CRC Math book, as well as Boas, and other more standard math texts. We've done identity assigments, and I've been using these long enough to not have a problem with that-- I graduate this winter. What's confusing to me is...

complex analysis-- Oscillation/vibration class Hello all, I'm taking a wave/vibration/oscillation class, and we're delving into complex notation for these. One of our assigments dealt with a complex function that we didn't get a whole lot of practice out of in math methods. I've gone back...