Science & Mathematics - 9 February 2007

could someone Give me an example of a real-life application of the Pythagorean Theorem.

thanks

2007-02-09 15:13:16 · 7 answers · asked by Anonymous in Mathematics

does the brain store the stuff we want to remember into our brain cells...? or it tranfroms the information into something else...?

2007-02-09 15:09:00 · 8 answers · asked by Brian S 1 in Biology

How do I set up an equation? I dont want to do trial and error! Please help

2007-02-09 15:08:12 · 16 answers · asked by Anonymous in Mathematics

2007-02-09 15:07:50 · 2 answers · asked by Nevergiveup_boy 2 in Biology

2007-02-09 15:05:55 · 2 answers · asked by Anonymous in Mathematics

the lack of gravity might explain it ? since there is no wind ?...or is there !

2007-02-09 15:05:19 · 13 answers · asked by Anonymous in Astronomy & Space

Generally, an acceleration less than 800 m/s2 lasting for any length of time will not cause injury, whereas an acceleration greater than 1000 m/s2 lasting for at least 1 ms will cause injury. Suppose a small child rolls off a bed that is 0.44 m above the floor. If the floor is hardwood, the child's head is brought to rest in approximately 1.9 mm. If the floor is carpeted, this stopping distance is increased to about 1.2 cm. Calculate the magnitude and duration of the deceleration in both cases, to determine the risk of injury. Assume that the child remains horizontal during the fall to the floor. Note that a more complicated fall could result in a head velocity greater or less than the speed you calculate

hardwood floor magnitude______ m/s2 duration ______ ms

Carpeted floor magnitude_______m/s2 duration ______ ms


really need help on this one guys.
Thanks

2007-02-09 15:03:24 · 2 answers · asked by cosmo 1 in Physics

2007-02-09 15:03:14 · 5 answers · asked by Lizzie 5 in Physics

where does basingstoke get its water supply from???

2007-02-09 15:02:23 · 1 answers · asked by mcsy_2000 1 in Geography

hello i was wondering if you knew the answer to this :
Which of the mesophyll cells would you expect to contain more chloroplasts – the palisade mesophyll or the spongy mesophyll? why would you expect this? thank you so much :D......

2007-02-09 15:00:41 · 8 answers · asked by Anonymous in Biology

2007-02-09 15:00:05 · 3 answers · asked by Justine 1 in Biology

I am not looking for the big bang explanation but everything has a start and finish point what comes before the start and after the finish point?

2007-02-09 14:59:44 · 9 answers · asked by loftyhook 1 in Astronomy & Space

Surely they have sperm and eggs, but what exactly is it that makes a mule , etc. sterile? Are there ever exceptions to this?

2007-02-09 14:59:24 · 2 answers · asked by rebecca h 2 in Zoology

2007-02-09 14:56:24 · 2 answers · asked by Justine 1 in Medicine

I want to cover a distance of D, and take exactly T time to do it. I want my initial velocity and final velocity to be zero. So, I'll be accelerating for a period <=.5T, maybe coasting for a while, then deccelerating equally and oppositely to my first acceleration. The easiest case to work with is when there's no coasting distance, and that's when the acceleration is a minimum. As my acceleration increases from trial to trial, there's more distance that I coast. I think. What I want is the distance that I coast expressed as a function of my acceleration, or vice versa. If that's possible in terms of T and D, great. If that turns out to be an unholy mess, it's fine if you let them equal one metre and one second, respectively. Thanks, folks!

2007-02-09 14:55:50 · 2 answers · asked by Mehoo 3 in Physics

∑_n=1 , ∞; 1/(ln n)^ln n. Is it convergent or divergent? Here's a soution from my friend, (ln n)^ln n = [e^ln ln n]^ln n = (e^ln n) ^lnlnn and ln ln n -> ∞ as n-> ∞, so ln ln n >2 for sufficiently large n. For these the n we have (ln n)^ln n > n^2 so taking the reciprocal n^2 would be larger. Since 1/n^2 converges by p-series so does 1/(ln n)^ln n by the comparison test. I can't seem to understand what the relationship is and can someone explain how to get this (ln n)^ln n > n^2 ? Thanks in advance!

2007-02-09 14:55:43 · 3 answers · asked by jamirshakur 2 in Mathematics

I recently heard there are many people who believe that the moon landing was faked. I have always just taken for granted that it occured.

Do you think it was real, or not and why?

2007-02-09 14:54:46 · 13 answers · asked by Lisa N 5 in Astronomy & Space

Could anyone help me please.


1. What is the degree of this term:5x2y3
2
3
5
1

2.What is the degree of this polynomial: 6x2y3-3xy2-2x

3
1
2
5

3. Simplify the following expression: (3x2+2x -3) + (5x2 +5)

4. Simplify the following expression:(2x2 -5x +10) - (x2 -7x +3)

5. Multiply and simplify:4x3(5x2-2x)

2007-02-09 14:50:30 · 6 answers · asked by Anonymous in Mathematics

Hi,

does volume of hemisphere depends upon whther its solid or not ?

what is the volume of solid hemisphere ?

whats the volume of empty hemisphere ?

are they different or same as 2/3 * pi * r^3

2007-02-09 14:50:08 · 4 answers · asked by sanko 1 in Mathematics

I would love to have information about this subject that is credible. I learned this shortly before and now I really want to know more about it. Where can I find information about this.

2007-02-09 14:47:46 · 6 answers · asked by Edwin L 2 in Medicine

On a frictionless surface, a 0.35 kg puck moves horizontally to the right (at an angle of 0°) and a speed of 2.3 m/s. It collides with a 0.23 kg puck that is stationary. After the collision, the puck that was initially moving has a speed of 2.0 m/s and is moving at an angle of −32°. What is the velocity of the other puck after the collision?

2007-02-09 14:47:04 · 1 answers · asked by Chris 1 in Physics

i saw a programme on ABC2 this afternoon about New Guinea and this particular bird caught my attention. it is black and iridescent blue. I tried to look it up on the web and the closest seems to be the male Victoria's Riflebird. But I am sure the bird I saw has a bigger and more prominent iridescent blue patch.

can anyone enlighten me? thanks

2007-02-09 14:46:44 · 4 answers · asked by alvinooim 1 in Zoology

A circle with radius of 1 is randomly placed so that it lies entirely inside a 15 x 36 rectangle ABCD. Find the probability that it does not meet the diagonal AC.

The answer is 375/442

I need the SOLUTION

2007-02-09 14:41:35 · 10 answers · asked by Curious Dude 1 in Mathematics

something to do with the pH level...

2007-02-09 14:41:10 · 1 answers · asked by To-the-Stars 4 in Biology

integral(sqrt(1-x^2))dx=?

This is where I am stuck in a larger problem involving the width of the middle stripe in a bucket of neopolitan ice cream.

It'll probably be tricky to explain this calculus using regular type, but I know that someone here will either manage that or find another way.

2007-02-09 14:40:56 · 4 answers · asked by Mehoo 3 in Mathematics

2007-02-09 14:38:31 · 2 answers · asked by Anonymous in Biology

Columbus accidently discovered America as he traveled across the Atlantic Ocean. But he meant to travel across the Indian Ocean for the country India. As he arrived at the land of America, why did he think it was India? Any geographical reasons...? And some websites I can check out for this question..? Any clue and idea would be greatly appreciated~!

2007-02-09 14:36:40 · 16 answers · asked by MichelleC 2 in Geography

What would this do to the Earth's axis? And the seasons and precession..

Over a period of say thousands to millions of years.

At what point does downward atmospheric drag become more important than upwards gained energy from tidal friction? Would the moon be in pieces already?

What would happen if the moon were to deorbit: rings or impact event, or both?

All hypothetical of course.

2007-02-09 14:36:22 · 5 answers · asked by anonymous 4 in Astronomy & Space

2007-02-09 14:35:53 · 5 answers · asked by abdurraheem m 1 in Other - Science

2007-02-09 14:35:19 · 3 answers · asked by linkmasterofwind 2 in Mathematics