Science & Mathematics - 26 September 2006

Many books describe the early eons of the universe in terms of things occurring for so many millions of years. Since our measurement of time (one year) comes from the earth's orbit of the sun, neither of which body existed for most of the early cosmic expansion, how is it possible to speak of processes as occurring over a quantity of years? Even using more sophisitcated time keeping, such as rates of particle decay or atomic resonance, how can those be measuring rods for time when those particles did not exist at the time being measured. In short, how can we quantify the passage of time early in the universe's history when the things we use as time's yardsticks didn't exist?

2006-09-26 17:48:28 · 7 answers · asked by Jimmy J 1 in Astronomy & Space

I am not science savy.

2006-09-26 17:47:03 · 15 answers · asked by eyesea@juno.com 1 in Earth Sciences & Geology

2006-09-26 17:46:33 · 13 answers · asked by annie 2 in Physics

as many website as you can

2006-09-26 17:45:17 · 2 answers · asked by Anonymous in Chemistry

2006-09-26 17:36:28 · 10 answers · asked by cheeseprincess4eva 2 in Mathematics

2006-09-26 17:32:57 · 10 answers · asked by dkjlhgf d 1 in Engineering

Why dont some orbit from top to bottom, and some around?

2006-09-26 17:32:02 · 8 answers · asked by Brian W 2 in Astronomy & Space

37.5 years, 4 months, 3 and two fifths days, 17 hours, 19 minutes and 49 seconds?

2006-09-26 17:31:57 · 10 answers · asked by Anonymous in Mathematics

2006-09-26 17:27:02 · 13 answers · asked by tm_ivie 1 in Zoology

I'm confused with what happens when you have to find the partial derivative of something like f(x,y)=2x^2 - 5xy with respect to both x and y, what exactly do you do with the term -5xy since it has both variables in it?

2006-09-26 17:24:03 · 8 answers · asked by Anonymous in Mathematics

2006-09-26 17:21:40 · 16 answers · asked by tm_ivie 1 in Other - Science

2006-09-26 17:21:36 · 11 answers · asked by chadspanky 1 in Astronomy & Space

if i already have buffers prepared by using Na acetate and acetic acid, how would i adjust their pH up? down? without altering the molarity?
why?

2006-09-26 17:19:35 · 4 answers · asked by Anonymous in Chemistry

2006-09-26 17:10:03 · 11 answers · asked by Anonymous in Mathematics

i dont get it and i need some help. PLEASE help

best 1 2 help gets 10 pts for best answer
:):)

2006-09-26 17:08:43 · 5 answers · asked by Anonymous in Mathematics

2006-09-26 17:02:18 · 6 answers · asked by sunil n 2 in Physics

Ithink it's really sad.......Darwin must be rolling in his grave.... :-(

2006-09-26 17:01:45 · 13 answers · asked by That one guy 6 in Other - Science

1.) The sum of two integers is 10. three times the larger integer is three less than eight times the smaller integer. Find the integer.

For this one, I tried to set it up as:
i=interger

3i-(3(8i)=10

this is way off.. couldn't get the right answer. Larger and smaller part got me confused.

Another one:

2.) One integer is eight lesss than another integer. The sum of the two integer is fifty. Find the integer.

In these two problems, what I am wondering is that are they talking about two different integers? and therefore, should have two different variables?

Any help with these two problems will be appriciated!

Thanks!

2006-09-26 17:00:07 · 8 answers · asked by Sowatup 1 in Mathematics

Sometimes, I picture a drive in the country (perhaps a few decades from now) where immense "farms" of wind turbines stretch for miles on both sides of the highway, kind of the way wheat does on the prairies, today.

Would this kind of a scenario gradually have some sort of an impact on the global climate? Technically, energy is being transferred from the atmosphere to the turbines. Would this not cause slower and slower wind speeds? Or maybe atmospheric temperature would drop? I suppose the general argument is that it eventually it gets transformed into heat somehow, and then released back into the atmosphere? I dunno, any experts here?

2006-09-26 16:55:54 · 9 answers · asked by TrickMeNicely 4 in Engineering

2006-09-26 16:55:42 · 4 answers · asked by nsgp12 1 in Mathematics

2006-09-26 16:55:40 · 3 answers · asked by rainfingers 4 in Zoology

With the Earth turning each day, and rotating around the Sun ... and the Galaxy expanding ... is it ever possible to be in the same place twice?

2006-09-26 16:54:53 · 13 answers · asked by Giggly Giraffe 7 in Astronomy & Space

no not a joke please be sensible i needto know

2006-09-26 16:50:28 · 16 answers · asked by Anonymous in Mathematics

A wedge of mass m = 35.5 kg is located on a plane that is inclined by an angle θ = 21.7 with respect to the horizontal. A force F = 349.3 N in horizontal direction pushes on the wedge, as shown. The coefficient of friction between the wedge and the plane is 0.143.

What is the acceleration of m along the plane? Negative numbers for motion to the left, and positive numbers for motion to the right, please.

I've tried so many different approaches, and I just can't get it... Please help, and try to explain how you got it, if possible. Because I'm lost. Thanks!

2006-09-26 16:49:02 · 3 answers · asked by Cando 3 in Physics

The electricity feeding a separate sub-panel in a separate part of an old warehouse we’re turning into artists’ studios is wired with three wires, all reading hot. In other words, three-wire three-phase instead of four-wire three-phase. If it were a four-wire system (with a neutral) I wouldn’t need to be asking this question but there isn’t a neutral coming out of the meter box.

The transformer is an old Delta Transformer. Is there any way that you can get a neutral line (for 110 usage) from this system? Can one of the three terminals on the transformer somehow be converted to a neutral?

Are there any other options?

2006-09-26 16:47:42 · 5 answers · asked by Doc Watson 7 in Engineering

2006-09-26 16:47:17 · 3 answers · asked by latina567 2 in Other - Science

2006-09-26 16:46:57 · 11 answers · asked by chadspanky 1 in Astronomy & Space

2006-09-26 16:46:37 · 5 answers · asked by ANON 4 in Earth Sciences & Geology

2006-09-26 16:45:12 · 14 answers · asked by Anonymous in Zoology

gluten and casein are proteins found in wheat and cows milk respectively.

2006-09-26 16:41:34 · 3 answers · asked by memac63 2 in Chemistry