Rules Definition and 516 Threads

Rules of Summation...Help Me Please I have a vauge idea of what these rules mean: 1. \sum^n_{i=1}c=cn 2. \sum^n_{i=1}i=\frac{n(n+1)}_{2} 3. \sum^n_{i=1}i^2=\frac{n(n+1)(2n+1)}_{6} 4. \sum^n_{i=1}i^3=\frac{n^2(n+1)^2}_4 are these rules saying that if i have...

We all know 2+2=4,2*2=4,2^2=4, etc. So, if we say O(1) means +, O(2) means *, etc. Then we know that 2 O(x) 2 = 4. So, how do we solve for x? If we have 3 O(x) 5 = 24, what is x? Let's say that - is O(-1), / is O(-2), etc (can you define something that uses what it describes to define...

New to quantum fields and I am wondering what is the rule which all of the small particles follow. Or know any resources where I can learn.

I was curious to what rules Police accident investigation people use to work out the speed of cars before accidents. Also an explanation of how these work would be useful as well. I have also herd but i don't know how true it is that the coefficient of friction from any make of tyre is about...

Hi guys I'm looking for a website where I can review basic triangle rules such as the formulas for right triangles... I would look at a geometry book but I don't have one. Its been a long time and I need some reviewing to do. I also wanted to ask if anyone knew about the group of triangles...

Found this in an old email...what points do you guys and gals agree or disagree with ? GUYS' RULES FOR WOMEN: > 1. Learn to work the toilet seat. You're a big girl. If it's up, put it down. We need it up, you need it down. You don't hear us complaining about you leaving it down. > >...

Is this simplified? Use the power rule and the summation rule to find f ' (x) and simplify where possible f(x) = ((2x^3)/5) - x^2 +3/8 f ' (x) = d/dt(((2x^3)/5) - x^2 +3/8) = ((6x^2)/5) - 2x Is this the right answer?

(see attached for circuit diagram) E1 = 40V E2 = 300V E3 = 80V r1 = 200 ohm r2 = 80 ohm r3 = 20 ohm r4 = 70 ohm I've come up with some very ugly equations to express the current flow across various parts of the circuit, as follows: I_1 = I_5 + I_6 I_3 = I_1 + I_2 I_3 =...

Please can you help with the following. If a ball which is bias weighted at a point on its circumference is enclosed in a socket which is few thousandths of an inch bigger in diameter than the ball will the weighted bias cause the ball to rotate as the socket is turned in the opposite...

Im having a bit of trouble with some problems using Kirchoff's rules. The problem states for me to calculate each of the unknown currents: I1, I2, & I3 for the circuit diagram attached. Now I've drawn my diagram and I've gotten my three equations for three unknowns, but i keep getting a...

On the outside the government of the United States let's the countries of the would think they are in control. But in fact the United States could crumble any goverment, destroy any army, or cut of supplies to anyone whenever they want. Anyone who thinks different is lieing to themself.

Just a, possibly-interesting, thought: If there is a being that chooses what is right and wrong, then what tells all the other beings that they must obey this being's standards? The being Itself can't tell us that, since we would have to assume that the being knows whether it is right or...

Math Rules Chem:) NO_3 What is the molecular formula of this compound if molar mass is 324.06. Math begins: aN + bO = 324.06 N=14, O = 16 14a + 16b = 324.06 N = O/3, O = 3N, a = b/3, b = 3a a = 162.03/32 =~ 5, b =~ 15. N_{5}O_{15}

If you do some simple manipulations of the equations E=hf, E=1/2mv^2, P=mv, and p=h/<lambda>, one can derive that the momentum is h/<lambda> or that it is h/(2<lambda>). I know that photons do not always follow normal mechanics, but do they follow the usual rules for mechanics for collisions...

Chapter 3 #17 (Krane) The spin-parity of 9Be and 9B are both 3/2-. Assuming in both cases that the spin and parity are characteristic only of the odd nucleon, show how it is possible to obtain the observed spin-parity of 10B(3+). What other spin-parity combinations could also appear? (These...

There is so much psychological warfare these days... long before there is any real fighting. Often that's all that's needed to tip the scale in favor of an aggressor or liberator. Their intended target gives into the reasoning of the perpetrator. The actual war may never happen. The leaflets...