Recent content by luma

anarchism

im studying astronomy because of those

Sounds like a natural selection car, a genetic company or a thermodynamic person.

In an escrow: 1. A offers to sell laptop for 2000 coins, and escrows X coins as security. 2. B offers to buy and escrows X coins as security. 3. B pays 2000 coins to A. 4. If A refuses to send the laptop, both A and B have lost X coins. Therefore, A has an * * incentive to send the laptop, and...

Hey, When we play Poker online, we are using a centralised network. You deposit your cash online, sit down at a game and play. You place your trust in the site to be secure; no other players can see your hands and no money is being secretly stolen from you. Even big name sites have been known...

ahhh! yes, yes I did! very good! thanks :D Makes sense woo

Yes it is. The book even says it's correct. Energy before = 50J Energy after = 50J Momentum before = 20 kg m/s Momentum after = 6*4 + 4*(-1) = 24 - 4 = 20 kg m/s What I'm asking is that since the momentum and energy are conserved, if you do the calculations for a subsequent collision...

[PLAIN]http://img219.imageshack.us/img219/6725/diagramt.png So I was doing this usual physics type question thing which goes along the lines kind of like this: 2 balls are constrained to a frictionless ring and collide elastically. What is their after velocities? Easy question using...

Sagan

Thank you! Of course...

Thank you for your informative post. But what I still don't get is what they are showing? If I make a measurement of x = 2 +/- 1 otherwise written as x = [1,3] Then y = x² would be [1,9] Using the rule derived dy = y (2 dx / x) = 2 x dx = 2*2*1 = 4 y = 2² +/- 4 = [0,8] ≠ [1,9] So what...

I found a webpage which lists: Q = a^n \Rightarrow \frac{\Delta Q}{Q} = |n| \frac{\Delta a}{a} Applying the method I used in OP here, \frac{\delta Q}{\delta a} = n a^{n-1}\\ \delta Q = na^{n-1}\delta a\\ \therefore \frac{\delta Q}{Q} = \frac{na^{n-1}\delta a}{a^n} = n \frac{\delta...

I'm trying to get an intuitive sense for errors and picked some random numbers: x = 2.5 +/- 0.01 find f(x) = x³ d f(x) / dx = 3x² d f(x) = 3x² dx = 3(2.5)² 0.01 = 0.1875 What I don't get is why f(x - Δx) ≠ f(x) - 0.1875 and why f(x + Δx) ≠ f(x) + 0.1875 Where did I go wrong in...

Colonisation, settling... Whatever you want to call it. Send a few people there regularly and it ends up becoming settled and then colonised. Robert Zubrin says it's within NASA's current budget. How come you say it is not? Mars to stay is just Zubrin's plan but the astronauts don't come...

Mars is for the Martians and Earth is for Humans. The other animals are guests here. Concern for speculative life on Mars from Humans is so noble. Earth should be the first grid we start this mission from the variety of smallest beetles to the singing whales. Yet Earth is abundant in life full...