Science & Mathematics - 12 September 2007

Thank you for the help this is the equation: (by the way. at the start where it says 2x2 the second 2 is a squared)

y = 2x 2 + 3x

2007-09-12 04:55:36 · 3 answers · asked by Anonymous in Mathematics

I'd like some help to prove this:

Let f_n be a sequence of monotonic functions defined on [a, b] that converges to a continuous function f. Then, the convergence is uniform.

Thank you

2007-09-12 04:43:56 · 4 answers · asked by Edson 1 in Mathematics

2007-09-12 04:43:16 · 7 answers · asked by Alexander 6 in Physics

Only heard about this recently, a star that didn't expand into it's solar system when it "died", what are the mechanics of that?

2007-09-12 04:42:34 · 6 answers · asked by inselaffe67 2 in Astronomy & Space

I'm building a mini project at home for an idea I have and need a mini turbine blade (not sure exactly what it is called). The idea I have revolves around water or air passing through the turbine blades to make it spin to generate power. I dont really want a water wheel more of a hydro turbine blade. I only want it to be maximum 10 inches and dont want to spend too much money. Any ideas? or maybe some guidelines of how to make one?

2007-09-12 04:38:26 · 1 answers · asked by Anonymous in Engineering

Based on the pattern, make a conjecture about the sum of the first 20 positive even numbers.

2 = 2 = 1.2
2+4 = 6 = 2.3
2+4+6 = 12 = 3.4
2+4+6+8 = 20 = 4.5
2+4+6+8+10 = 30 = 5.6



A. the sum is 20.21

B. the sum is 21.22

C. the sum is 19.20

D. the sum is 20.20

2007-09-12 04:33:14 · 3 answers · asked by Anonymous in Mathematics

2007-09-12 04:32:53 · 8 answers · asked by precalculus 1 in Mathematics

2007-09-12 04:31:22 · 5 answers · asked by precalculus 1 in Mathematics

Can anybody tell me how to convert analog Component signal to digital component signal? Tell me method and formula to convert analog component to digital component signal pattern

2007-09-12 04:30:24 · 5 answers · asked by swain p 1 in Engineering

2007-09-12 04:27:45 · 2 answers · asked by precalculus 1 in Mathematics

2007-09-12 04:26:42 · 3 answers · asked by victoria 1 in Other - Science

A box contains 20 chips. There are three chips marked with a number 3, nine chips marked with a number 9, and eight chips marked with a number 27. If 100 chips are selected randomly with replacement, find the approximate probability that the product of the numebrs observed will be between 3^210 and 3^230.

2007-09-12 04:25:42 · 2 answers · asked by sky_blue 1 in Mathematics

Find the equation of the two planes parallel to and sqrt5 units away from -2y+z-1.

please help... Can you tell me your solutions too so I can learn to do it by myself?

2007-09-12 04:24:28 · 3 answers · asked by nadanilnone 1 in Mathematics

2007-09-12 04:23:56 · 1 answers · asked by precalculus 1 in Mathematics

options for a):2014,2024,2036,2032
options for b):2008,2009,2011,2013

2007-09-12 04:22:46 · 3 answers · asked by ʞzɹәႨnɹ 2 in Mathematics

2007-09-12 04:20:45 · 3 answers · asked by countrylady691 1 in Engineering

2007-09-12 04:18:27 · 8 answers · asked by joezen777 5 in Paranormal Phenomena

I can't believe I'm asking this. It should be an easy one.

2007-09-12 04:10:41 · 13 answers · asked by Anonymous in Mathematics

I was thinking about this. They claim that the universe is expanding, but expansion implies an object growing in space around it. My theory is that rather than the space between matter growing, the matter in space is shrinking. This would mean the size of the universe remains constant but as we are shrinking at the same rate as our nearby surroundings it appears as if space is expanding.

Perhaps it is gravity that is causing this shrinkage.

Perhaps there was no big bang, rather a big shrink, the matter collapsing under its weight and the spaces in between increasing.

This might mean that black holes in our universe form mini-universes of our own, and in turn our universe is merely a black hole in a larger one, and infinite regress of black hole dwelling universes.

I am looking for some one to provide proof that the above is wrong. There are many levels within this question so feel free to attack it at any point, or agree with some of the early points but destroy the later.

2007-09-12 04:08:38 · 16 answers · asked by Tom H 2 in Astronomy & Space

if you were travelling in a car down a road. if theorhetically you had a ball floating in the car, would that ball move with the car, or hit the rear window.

this maybe stupid, but i honestly don't know.

2007-09-12 04:05:16 · 4 answers · asked by Anonymous in Physics

Railroad car A rolls at a certain speed and makes a perfectly elastic collision with car B of the same mass. After the collition, car A is observed to be at rest. How does the speed of the car B compare to the initial speed of car A.

Okay now even though your not expert in physics....please help

2007-09-12 04:03:02 · 4 answers · asked by Sawira 2 in Physics

2007-09-12 03:53:05 · 74 answers · asked by Anonymous in Geography

2007-09-12 03:52:56 · 7 answers · asked by William B 2 in Astronomy & Space

I am looking for a nice flexible software that can simulate solar system dynamics - I should be able to place planets in different orbits, define perturbation of their orbital radius, define inital conditions, etc, and would like to observe satbility or instability phenomena. Any free-wares available or any links?

2007-09-12 03:51:54 · 1 answers · asked by birdie30467 1 in Astronomy & Space

i am doing microbiology and it has been a while since i did math and I need to know what toy do

2007-09-12 03:51:37 · 3 answers · asked by shorty 1 in Mathematics

It reads E 000 00.079. But I really don't get why.

Anybody advise? Please reference your answer.

2007-09-12 03:49:44 · 7 answers · asked by SamToucan41 3 in Earth Sciences & Geology

Suppose a ball of putty moving horizontally with 1 kg m/s of momentum collides and sticks to an identical ball of putty moving vertically with 1kg m/s of momentum. What is their combined momentum?? What is the total momentum of the balls of putty before and after the collision??.

Please.... ow please help :(

2007-09-12 03:48:45 · 2 answers · asked by Sawira 2 in Physics

If y = (x−4)/(12 x−4)

find dy/dx

show all working out
thanks

2007-09-12 03:48:34 · 7 answers · asked by Anonymous in Mathematics

(3^2)^-1
^ - means raised to
Show me how to do it with that -1

2007-09-12 03:46:56 · 3 answers · asked by dragoi_stefan06 2 in Mathematics

Solve the nonlinear ineqality. Express the solution using interval notation.

a) (x+2) (x-1) (x-3) < = 0

b) 1/x+1 + 1/x+2 < = 0

2007-09-12 03:46:35 · 2 answers · asked by alexo 4 in Mathematics