Science & Mathematics - 20 December 2007

if f(x)= (5x^2+3x-1)^(1/2)

2007-12-20 09:13:35 · 4 answers · asked by PRob 2 in Mathematics

tons of people argue about whether or not global warming is real or not, or if it's just part of nature's cycle. well, i'll tell you that it is a natural part of earths cycle. there are hot houses and ice houses that last a very long time. there are all kinds of natural cycles the earth goes through that are complicated. however, scientists are able to go back thousands of years in ice cores to determine what the levels of Co2 were and we are way off the charts. i took an environmental science class and i know i am not a expert just because of that but it seems to me that the evidence to support the argument that humans have had a detrimental impact on our earth is incontrovertible. responses?

2007-12-20 09:11:51 · 6 answers · asked by jess_rain13 2 in Earth Sciences & Geology

Thanks.

2007-12-20 09:08:03 · 9 answers · asked by Ichigo 1 in Earth Sciences & Geology

8 - 2/3x = 17 + 1/3x
i need it in 0=ax+b form (aka standard form)
thanks

2007-12-20 09:07:07 · 13 answers · asked by Kristen V 1 in Mathematics

2007-12-20 09:06:29 · 3 answers · asked by Anonymous in Engineering

Ok, I"m doing a report on whales, to hunt or protect, and someone says that whale makes the ocean salty, and that if there aren;t' any more whales, the ocean will become less salty every year, so all I;'m asking is, do whales make the ocean salty? If not, then what does ?

2007-12-20 09:06:20 · 3 answers · asked by Private 2 in Earth Sciences & Geology

around the world with each person holding a light...could it be seen from space?

2007-12-20 09:03:43 · 13 answers · asked by Francesca 5 in Astronomy & Space

Can anyone tell me about different bicycle frames and briefly describe how the specific frame design is arranged to take the load?
Cheers.

2007-12-20 09:03:40 · 2 answers · asked by Devoted 1 in Physics

...why do they hum?????

2007-12-20 09:01:27 · 12 answers · asked by Francesca 5 in Zoology

2007-12-20 09:00:32 · 7 answers · asked by Samantha T 1 in Mathematics

What is unique about Pluto's orbit?

Pluto is a terrestrial planet beyond the gaseous planets
Pluto's orbit is tilted, compared to other planets
Pluto's orbit appears to speed up and slow down
Pluto has the most difficult orbit to observe.

2007-12-20 09:00:27 · 5 answers · asked by Anonymous in Astronomy & Space

2007-12-20 09:00:00 · 3 answers · asked by Anonymous in Biology

non-right angled isocles triangles

2007-12-20 08:59:50 · 4 answers · asked by Anonymous in Mathematics

is it possible that there is a parallel universe outside of our solar system? I was just wondering because if there was, that would be really cool, but also, i was wondering, if NASA built the right space shuttles to go at the right speed, faster than the speed of light, then would it be possible for people to reach that parallel universe?

2007-12-20 08:59:14 · 11 answers · asked by ... 2 in Astronomy & Space

What's up with only blue, brown, green?

2007-12-20 08:56:16 · 7 answers · asked by Anonymous in Zoology

I'm in Grade 9 Science and all of this electricity stuff is getting on my nerves. I'm particularily confused with voltage. "The potential difference between two points on a curcuit in relation to blah blah blah..."; no, that crap just won't cut it. I don't know what the hell it means. My teacher just shows us the calculations for stuff and doesn't thoroughly explain anything. This is my worst unit yet. Can someone explain to me what these terms mean in a way that I can understand? I want to know a bit about what I'm working with here.

Also, how the heck do batteries work? My teacher goes on about these "cells" with a short line (-) and a long line (+) or something like that... but I have no idea what the heck she's talking about. Does she think we've learned about batteries already or something?

One more thing: Our teacher sais electrons flow out from the "negative terminal" on a battery. What I want to know is: WHY? What goes on inside a battery anyways?

2007-12-20 08:53:16 · 9 answers · asked by pb 2 in Engineering

http://tinypic.com/view.php?pic=87iysxt&s=1


a. AAS only
b. ASA only
c. either ASA or AAS
d. neither

2007-12-20 08:51:36 · 5 answers · asked by Anonymous in Mathematics

Everything involves a penis and vagina... im just curious what everyone thinks about how this came to be. If everything was to banch off and evolve in there own separate way, why is it that the way everything reproduces is pretty much exactly the same?

2007-12-20 08:51:24 · 8 answers · asked by Anonymous in Biology

the big bang theory says that everything in the universe is moving away from each other which would seem to preclude any collisions, nes pas?

2007-12-20 08:47:48 · 12 answers · asked by jshalejhale 1 in Astronomy & Space

Assuming the Law of Universal Gravitation F(g) = (GMm/r^2)(-r), apply the acceleration of gravity at the Earth's surface, the radius of the Earth, and the radius of the moon's orbit to calculate the acceleration of the moon.

2007-12-20 08:45:34 · 2 answers · asked by sapphireleech@sbcglobal.net 2 in Physics

2007-12-20 08:45:28 · 7 answers · asked by Latoya G 1 in Mathematics

how are you going to solve this..

how many grams of each product could be formed when 0.333mol of cesium sulfide reacts with 0.555mol of manganese III bromide?

2007-12-20 08:45:01 · 4 answers · asked by niQue33 2 in Chemistry

how do I care for cactus in winter?

2007-12-20 08:44:41 · 2 answers · asked by Neda J 1 in Botany

2007-12-20 08:43:56 · 6 answers · asked by Anonymous in Weather

Given the potential energy of gravity is PE = -GMm/r and kinetic energy of motion is KE = (1/2)mv^2, apply conservation of energy to determine the final symbolic speed of an object initially at rest falling from an initial radial distance of r(0) to a final radial distance of r(f).

2007-12-20 08:43:27 · 2 answers · asked by sapphireleech@sbcglobal.net 2 in Physics

A paradox for all evolutionist !!

2007-12-20 08:39:27 · 7 answers · asked by Archie P 1 in Biology

The equation which describes the logarithmic phase of bacterial growth in batch culture is: Log10Nt = 0.301kt + log10N0.

a. derive the equation

2007-12-20 08:37:19 · 3 answers · asked by Anonymous in Mathematics

I found a kind of cheese made out of mare milk, so I want to know if you really can milk a horse.

2007-12-20 08:37:01 · 6 answers · asked by ilikepi104 2 in Zoology

2007-12-20 08:36:12 · 5 answers · asked by Anonymous in Mathematics

2007-12-20 08:34:54 · 3 answers · asked by Anonymous in Mathematics