Science & Mathematics - 4 December 2006

Who ever reply the best answer get 10 point

2006-12-04 23:54:39 · 12 answers · asked by Anonymous in Biology

2006-12-04 23:51:21 · 4 answers · asked by get_xed 1 in Physics

2006-12-04 23:46:14 · 1 answers · asked by danilo g 2 in Mathematics

Some years back a friend of mine dug out this problem - I've a first-class honours degree in maths so I smiled smugly to myself, preparing to solve the problem in only a few minutes... and got horribly stumped (serves me right!).

Here's the problem: a farmer has a square field (let's say 100m on each side). He tethers a cow to the mid-point of one side. How long should the rope be so that the cow ends up eating exactly half the grass in the field?

I remember creating awful-looking trigonometric expressions constaining the answer, but never being able to reduce it to a

length of rope = (nasty expression)

kind of formula.

(BTW I'm not interested in approximations or iterative methods.)

I got it into my head that it was impossible to reduce to such a formula - and if so, that would be an interesting proof in itself.

Anyone got a solution or a way of proving that there's no simple expression?

2006-12-04 23:44:49 · 7 answers · asked by Anonymous in Mathematics

2006-12-04 23:43:35 · 2 answers · asked by angie w 1 in Chemistry

2006-12-04 23:37:32 · 1 answers · asked by techwrit 1 in Botany

I have done a serious of P-P plots using SPSS. Some of them follow the line perfectly and some of them curve out of the line. What makes a p-p plot not normal and what makes it normal?

If possible could you answer this as simple as possible - Statistics is not easy for me! Thanks!

2006-12-04 23:37:18 · 2 answers · asked by cafe4567 2 in Mathematics

2006-12-04 23:36:36 · 5 answers · asked by Dan C 1 in Biology

2006-12-04 23:36:31 · 5 answers · asked by Anonymous in Physics

any information; how much is the coverage range of the standard smoke detector in m^2, detectors used in offices or stores.

2006-12-04 23:35:55 · 3 answers · asked by eng. samer 1 in Engineering

So many women are going to space these days...

2006-12-04 23:34:22 · 9 answers · asked by Anonymous in Astronomy & Space

is there any evidence that a type of cat eats eagle? such as pictures or video?

2006-12-04 23:29:10 · 4 answers · asked by Tue the End 1 in Zoology

2006-12-04 23:27:32 · 7 answers · asked by jeanne g 1 in Biology

2006-12-04 23:21:38 · 7 answers · asked by bettina c 1 in Biology

2006-12-04 23:20:52 · 6 answers · asked by dayashankar p 1 in Engineering

the generation capacity of a plant suggest what ?
the power generated per second / hours / day?

2006-12-04 23:20:48 · 5 answers · asked by mahar b 1 in Engineering

2006-12-04 23:20:18 · 6 answers · asked by elliottsadler06 4 in Physics

I've seen pics to help prove it.

2006-12-04 23:19:58 · 7 answers · asked by Anonymous in Biology

I have been given this question in a Electronics assignment which has to be attempted for three marks.Can u give me a suitable answer(I am in XI standard).Also what actually is a capacitor?

2006-12-04 23:16:17 · 2 answers · asked by tejas_fundo 3 in Engineering

How would you distinguish between a monocot stem and a monocot root?

2006-12-04 23:13:43 · 4 answers · asked by Amie N 1 in Botany

2006-12-04 23:09:06 · 4 answers · asked by mariselvam r 1 in Engineering

The line (k-2)y = 3x meets the curve xy = 1-x at two distinct points. Find the range of k.

2006-12-04 23:06:41 · 5 answers · asked by Anonymous in Mathematics

2006-12-04 23:05:12 · 7 answers · asked by Angelo G 1 in Zoology

2006-12-04 22:59:26 · 9 answers · asked by Life is Like A Box of Chocolate 1 in Mathematics

2006-12-04 22:57:08 · 5 answers · asked by nhickie b 1 in Biology

2006-12-04 22:53:45 · 9 answers · asked by Nakessa B 1 in Astronomy & Space

How does the arranagement of vascular tissue differ for monocot compared to dicot stems?

Thanks!

2006-12-04 22:51:33 · 1 answers · asked by Amie N 1 in Biology

2006-12-04 22:48:29 · 7 answers · asked by sudhan 2 in Physics

2006-12-04 22:46:38 · 23 answers · asked by sportative 1 in Physics

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2006-12-04 22:46:25 · 12 answers · asked by Anonymous in Mathematics