How can you log in as paulfr, did he give you his password? > Yes, we are close friends Why do you want to keep his user name, I thought he wanted...
James R OK I can log in as "paulfr" now Thank you. I will let my friend Paul know. May I keep my Paul Reed account too ? It was quite disturbing to...
IB High Level Physics Test Question I have encountered a question whose answer I disagree with. I think the answer is I and II , not the I and...
MacGyver's early post is incorrect. EM Waves are generated by moving charges; electrons or ions. The gas discharge of a street lamp or automobile...
The point ( 0,4 ) immediately tells us that c=4 f(0) = 4 ax^2 + bx + c = 4 x=0 thus c=4
Another view of this East -West dichotomy was articulated by Mortimer Adler. "The East never separated Philosophy from Religion" In the West, the...
I must misunderstand you. Are you saying the Power Rule for Differentiation is only valid for integer exponents ? If so, you are in error.
Ahhhhhh If the energy is coming from the nucleus, then there has to be reaction products. Have they set up detectors to verify they are there and...
Well I'd say it is as close to pure truth as you could ever find. The theorems, proofs, discoveries over the ages have outlived any human. If that...
Math is indeed the language of science. If you doubt this, try to describe in words as precisely as you can what happens when you drop a tennis ball...
The resistor Pete has shown is call an axial lead resistor. If the power level if 1/4 watt, it will plug directly in to a female BNC connector. The...
Invention Invention IMO Mathematics is a language. The language of the natural world. What the language describes, Nature, is "Discovered"...
Ben's comment is true. It is quite difficult to learn physics aor math from textbooks. They put so much in there trying to impress their peers that...
I do not understand how an equivalence class can be a vector. A class has many elements, but a vector is a single entity. No ?
Wave-particle duality This seems to be a related question .......... Is wave-particle duality still considered to be one of the great...
Fundamental Theorem of Algebra Complex numbers are a mathematical idea that allows one of the grandest Laws of Mathematics to be true; The...
http://en.wikipedia.org/wiki/Pendulum Note the acceleration vector changing with position / time. F = ma If the string is taught, it should transmit...
Rgor To be slightly more rigorous [so you can deal with variations of this problem] Think of percentage P, fraction F, and decimal D, as...
Imaginary numbers are no different than negative numbers. You can see 3 oranges, but you can not see minus three oranges. So minus 3 makes no...
Isn't Probability Fun ? Double checking the OPs question, he said .. "How to you calculate the total odds of drawing the Ace of Spades after X...
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