Science & Mathematics - 6 August 2007

...that over 80% of the human brain's potential use is still considered "unknown"?

I've been told we only use about 15%.

2007-08-06 13:34:35 · 7 answers · asked by Anonymous in Biology

2007-08-06 13:29:47 · 8 answers · asked by sportsguy367 1 in Mathematics

1.why are metals rather than ionic solids used in electrical wiring?

2.Explain why proteins and carbohydrates are polymers. what is each polymer made of?

3.The lenght of a bond depends upon its type. Predict the relative lenghts of the carbon-carbon bonds in the following molecules, and explain your reasoning.

H H H
| \ / H-C=C-H
H- C - C -H C=C _
| H/ \H
H
Ethane Ethene Ethyne

2007-08-06 13:27:05 · 2 answers · asked by Anonymous in Chemistry

1+3x/5-2x

2007-08-06 13:22:21 · 3 answers · asked by deadman 2 in Mathematics

2007-08-06 13:00:00 · 3 answers · asked by Anonymous in Biology

2007-08-06 12:58:37 · 3 answers · asked by Anonymous in Biology

2007-08-06 12:58:02 · 4 answers · asked by Anonymous in Biology

2007-08-06 12:50:55 · 2 answers · asked by Anonymous in Chemistry

2007-08-06 12:36:58 · 4 answers · asked by Curious 1 in Other - Science

How many milliliters of a 135 mL solution of 0.8 M K3PO4 must be used to make 56 mL of a solution that has a concentration of 0.35 M K+?

2007-08-06 12:36:36 · 2 answers · asked by Liz 4 in Chemistry

#1. Divide and Simplify
21x^3 - 50x^2 - 65x - 14 / 7x + 2

#2. Solve. There May Be No Solution
t^2 + 12t = 0

#3. Subtract
(xy - ab - 8) - (xy - 3ab - 6)

#4. Solve
c^2 + 2c - 8 = 0

#5. Add and simplify.
(4x^2 - 3x + 27) + (7x^2 + 5x - 56)

2007-08-06 12:31:30 · 3 answers · asked by Anonymous in Mathematics

What are some lines of evidence that indicate that the human population has exceeded Earth's carrying capacity

2007-08-06 12:29:09 · 7 answers · asked by parth p 1 in Earth Sciences & Geology

I was told inside the body it is BLUE NOT RED

2007-08-06 12:27:33 · 14 answers · asked by Anonymous in Medicine

Complete the factoring.

5x^2 - 24x - 36 = (x - 6)(___________)

2007-08-06 12:24:29 · 6 answers · asked by It's just me 1 in Mathematics

or some other kind of biological fuel, if so what kind

Thank you for taking the time to answer

2007-08-06 12:21:01 · 9 answers · asked by MolecularBiologyLearner 2 in Biology

I really get afriad of thunder esaiclly really loud ones what should i do?

2007-08-06 12:16:49 · 10 answers · asked by Anonymous in Weather

"A thermometer gives a reading of 96.1F+0.2F. What is the temerature in C? What is the uncertainty?"

What's an uncertainty and how do you figure it out?
Pleaaaseeee help!

2007-08-06 12:13:10 · 3 answers · asked by Anonymous in Weather

2007-08-06 12:10:42 · 4 answers · asked by Anonymous in Mathematics

what's the diff b/w fraction 2/3 and repeating decimal 0.39393939 in terms of a fraction?

2007-08-06 12:09:15 · 5 answers · asked by Olivia R 1 in Mathematics

know how?

2007-08-06 12:05:21 · 9 answers · asked by Brandon SmackDaddy 1 in Mathematics

or clockwise, explain in detail

2007-08-06 12:03:53 · 2 answers · asked by dardenseed 1 in Weather

Also, what was there before the big bang?

2007-08-06 12:02:33 · 14 answers · asked by nottmlayla 3 in Astronomy & Space

I mean, what's wrong with your thumb?

2007-08-06 12:02:33 · 12 answers · asked by inbetweendays 5 in Astronomy & Space

FIND THE ERROR!! ITS IMPOSSIBLE!!

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Did you know that 80% of UCSD students
could not find the error above? Repost
this with the title "Find the error, its impossible.",
and when you click "Submit Post", the
answer will be really obvious

2007-08-06 12:01:25 · 9 answers · asked by Anonymous in Mathematics

Find the exact numbers a and b which make the following identity true:

sin(pi/2-x)=acosx+bsinx

A brief description of answer and process would be great. Thanks guys/gals!

2007-08-06 11:59:23 · 3 answers · asked by cac_424 1 in Mathematics

2007-08-06 11:55:13 · 7 answers · asked by Anonymous in Astronomy & Space

Or something that made no sense at the time but became apparent, hit you with the memory, later?

2007-08-06 11:54:28 · 19 answers · asked by Ilkie 7 in Paranormal Phenomena

the % P of physicians using a new medication after t months is given by P(t) = 100% (1-e^-.2t)

I need to find out what percentage of physicians are using the medication after 1 month, and the rate of change P'(t)

can anyone help

2007-08-06 11:53:26 · 2 answers · asked by jake p 2 in Mathematics

2007-08-06 11:49:37 · 8 answers · asked by Anonymous in Astronomy & Space

The formula I have to go by with the ABYC is normally 3.142xR² to know the circle's circumference, but what I am having a hard time with is this, doing it in reverse. Ok, here's where I come into the Land of Confusion (a great Phil Collins/Genesis song btw). Let's say to find the circumference of an 8 inch circle I go with (R)4² = 16 * 3.142 = 50.27 inches. But in reverse by dividing 16 by 3.142 I get 5.1 as my radius.

The reason why I need to know this madness, is that I am trying to find out what a non-circular geometrical shape's circular diameter. For example, a triangle with three sides of equal size (3 inches) would give me the circumference reference of the circle, but not its diameter.

I must have slept in my Geometry class back in 1985 and missed this one. Proofs and Theorims were my bane of existence in those horrible days of mullets running amok!

If you can show me the correct formula, you will earn 10 brownie points. :) Everyone loves brownies right?

ty

2007-08-06 11:49:04 · 10 answers · asked by Anonymous in Mathematics