Science & Mathematics - 20 July 2007

Well this is my other questioun about sharks.If you go in to the white sea do you need to go to one metre deapth to be safe from a shark attack because i have heard sometimes sharks attack in 1.50metres or 2 metres.Wow scary!

2007-07-20 21:30:47 · 3 answers · asked by Pam V 2 in Zoology

2007-07-20 21:30:02 · 4 answers · asked by mike31 1 in Zoology

2007-07-20 21:29:43 · 6 answers · asked by mariamma_maria 1 in Geography

Include equations too.

2007-07-20 21:27:33 · 1 answers · asked by Jun 1 in Physics

2007-07-20 21:24:08 · 4 answers · asked by ranjani_2710 1 in Chemistry

Consider the rectangle ((0,0),(2,1))

What is the most creative way of dividing its area in half?
- e.g. by any combination of straight lines, triangles, curves, fractal curves (e.g. Cantor dust), star, ellipse with non-integer exponents, two concentric nautiluses, cyclic curve, other plane curve...
- doesn't have to be just two subshapes, you can use more
- e.g. you could figure out what position and angle another rectangle of equal area overlapping it at some angle would have to be to to cover half its area
- prize is for the most creative!
- also good if you can give coordinates or equations

For inspiration:
http://mathworld.wolfram.com/topics/PlaneCurves.html


(If you think this is easy, the follow-up would be "n different distinct methods of marking out collections of subshapes, each having total relative net area 1/n")

2007-07-20 21:24:08 · 6 answers · asked by smci 7 in Mathematics

Add all these numbers and tell me whats the total.
[i need to know how much money to bring to the mall tomorrow]

$29.50
$22.50
$22.50
$26.50
$78.00
$22.99
$39.99
$14.99
$22.80
$17.80
$19.80
$24.99
$46.99
$60.00

I was gonna use a calculator but mine is broken.
And i'm too lazy to do it by hand.

so helpp?? i'll bake you cookies...

2007-07-20 21:15:06 · 25 answers · asked by Anonymous in Mathematics

2007-07-20 21:13:07 · 7 answers · asked by James K 1 in Mathematics

10,100 kilometres in stadard form. Show the way!!

2007-07-20 21:12:03 · 11 answers · asked by Anonymous in Mathematics

2007-07-20 21:05:30 · 4 answers · asked by aba m 1 in Engineering

P= 2 and Q= 3
-3 1

Write p+q as a column Vector.

2007-07-20 21:01:57 · 3 answers · asked by Anonymous in Mathematics

2007-07-20 20:56:36 · 2 answers · asked by AvEnGeR 3 in Geography

water boils at room temp under a vaccum. why not the vaccum of space?

2007-07-20 20:53:01 · 6 answers · asked by jlburchell76 1 in Physics

2007-07-20 20:51:50 · 42 answers · asked by Anonymous in Mathematics

This is for a general knowledge quiz we had at our school, I got the answer wrong and am interested to know the correct answer since the teacher would not tell me :@ Any help is appreciated.

2007-07-20 20:50:15 · 11 answers · asked by tiredemu 1 in Other - Science

the highest mountain in Argentina is Aconcagua. Its height is 6960 metres, correct to the nearest twenty metres.. Write the smallest possible height of Aconcagua. and show ur method.....

2007-07-20 20:50:08 · 4 answers · asked by Anonymous in Mathematics

Native European populations require more vitamin D than native African populations

2007-07-20 20:45:56 · 5 answers · asked by tc 1 in Biology

Triangles have an entire section of math devoted to them.
Circles get to hang out with pi.
Squares get to be all igostical by squaring things to make itself.
But no one cares about the rectangle: length times height=area, he's boring so no one cares about him.

We should turn rectangle (and maybe rhombus) into sexual innuendo so the shapes feel cool and edgy.

2007-07-20 20:43:47 · 9 answers · asked by Anonymous in Mathematics

Hi ,I need info on how to make an Electro magnet at home .I want it to work on main ,or house current so I also need to know precautions too. Anyone know? Thanks .Moshon.

2007-07-20 20:43:08 · 3 answers · asked by chizik10 2 in Other - Science

2007-07-20 20:42:24 · 5 answers · asked by you_give_me_life 1 in Astronomy & Space

Top leading mathematical fungineers predict by the year 2029 humans will have advanced enough in fungineering to create brand new numbers. Can you imagine what would happen to the laws of gravity and magnetism if a terroist where to create a new whole number between 3 and 4!!!!!!!!!!!!11

2007-07-20 20:38:35 · 3 answers · asked by Anonymous in Mathematics

2007-07-20 20:37:46 · 3 answers · asked by Anonymous in Physics

I think it possible now, because it was possible 38 years ago.
Don't you think so, too?

2007-07-20 20:33:11 · 6 answers · asked by during_spring_and_autumn 1 in Astronomy & Space

I have these weird little bugs all over my room and people are telling me they're fleas. But they were there when I got home, and no one has been home for a week. I have no animals. Can fleas be attracted to something other than people and animals? If so, what?

2007-07-20 20:12:57 · 11 answers · asked by Anonymous in Zoology

2007-07-20 20:12:53 · 14 answers · asked by Anonymous in Zoology

2007-07-20 20:11:04 · 4 answers · asked by Anonymous in Astronomy & Space

1. The cost of producing x thousands of a certain product is given by:
C(x) = 9x - 3x^2 + 2x^2
At what production level x is the marginal cost Increasing and decreasing?

2. Find the critical points for the following functions and determine whether the function has a local maximum or local minimum at each critical point.
(a). f(x) = xe^(-x)
(b). f(x) = 6+x -x^2






























. The cost of producing x thousands of a certain product is given by:
C (x) = 9x -3x^2 + 2x^3

At which production level x is the marginal cost:
Increasing and decreasing?

2. Find the critical points for the following functions and determine whether the function has a local maximum or local minimum at each critical point.
(a). f(x) - xe^(-x).
(b). f(x) = 6 + x-x^2

2007-07-20 20:03:24 · 1 answers · asked by gab BB 6 in Mathematics

A. Centrifuge
B. Microscope
C. Incubator
D. Osmosis chamber
E. Bunsen burner

2007-07-20 20:02:09 · 4 answers · asked by Anonymous in Biology

2007-07-20 19:57:51 · 9 answers · asked by Anonymous in Physics

I know las vegas, texas, florida anyothers?

2007-07-20 19:56:01 · 3 answers · asked by powerpuff girls 1 in Geography