Science & Mathematics - 1 September 2006

What's the easiest way to calculate all combinations of numbers, in sets of 5, that eqaul n. For instance, say n=20. Sum combinations would include:
20+0+0+0+0
19+1+0+0+0
....
5+5+5+5+0
....etc

Is there a mathmatical formula that would lead me to those sums without going through all combinations individually? I'm not a math whiz, so details will be GREATLY appreciated.

Please let me know if you have any further questions!

Thanks!
--Dan

2006-09-01 06:37:06 · 4 answers · asked by danstevens 1 in Mathematics

Here is the link the Polish site where you can find two pictures with crosses obstructed by objects. How it is possible ?

http://www.paranormalne.forall.pl/forumVRP/viewtopic.php?t=241&sid=0f723bbc2fddff608c2b752e423e5e3c

2006-09-01 06:37:00 · 7 answers · asked by j.juszkiewicz 1 in Astronomy & Space

Kindly give lot of details and examples as it is important for me.

2006-09-01 06:35:53 · 4 answers · asked by Anonymous in Biology

2006-09-01 06:31:21 · 12 answers · asked by iluvhipos 3 in Mathematics

I want to become a doctor, but i also want to have a family. I just finished my first degree and want to apply to be a doc for next year, however do you think its possible to be a house officer or a first year resident and also raise a child? Or do you think i'd have to wait until after consultancy?

Also how easy it to become a consultant? After you pass the exams as a senior registrar are you automatically a consultant?

Also does anyone know which fields are better for those who want a family?

thanks

2006-09-01 06:27:33 · 12 answers · asked by hotchoconnutz 1 in Medicine

2006-09-01 06:25:50 · 4 answers · asked by lilmandawes 1 in Chemistry

Do people with blonde hair run a risk of dying their hair on accident by habitually washing their hair with colored shampoo or something, because the color in the shampoo HAS to go somewhere.

2006-09-01 06:15:50 · 3 answers · asked by ezstrider461 1 in Other - Science

If all organisms, including man, evolved from the same species, just like the Theory of Evolution has "proven", does that mean a beaver or otter had a 3-some with a duck and a Tazmanian devil, and that the current platypus is a descendent of that off-spring? The platypus resembles all three animals, so therefore, they must have had an orgy of some sort.

2006-09-01 06:14:23 · 7 answers · asked by Anonymous in Zoology

I want to prepare a standard solution of inorganic phosphate using KH2PO4 for estimation of inorganic phosphate in unknown sample by Fiske subbaroa method. I am not able to understand why 136 g of KH2PO4/liter should be taken and what is the concentration of Phosphate alone in this solution.

2006-09-01 06:11:51 · 2 answers · asked by Hara P 1 in Chemistry

Two vectors A and B have precisely equal magnitudes. For the magnitude of vector A + vector B to be larger than the magnitude of vector A - vector B by the factor n, what must be the angle between them? (Use n for n as appropriate.)

2006-09-01 06:08:06 · 4 answers · asked by Anonymous in Physics

My family and I are going on Vacation and my mom would like to know.

2006-09-01 06:07:38 · 5 answers · asked by RuneWitchSakura1988 4 in Weather

2006-09-01 06:01:25 · 7 answers · asked by thedark666lord 1 in Physics

2006-09-01 05:59:09 · 9 answers · asked by Anonymous in Other - Science

2006-09-01 05:58:55 · 9 answers · asked by Edwin R 1 in Mathematics

Lockheed-Martin just beat out space pioneers Northrup-Grumman and Boeing for all the new NASA aerospace launches. Lockheed-Martin builds military bombs, including all the upscale plus-million-dollar bombs, some of which aren't exactly dead-on accurate.

Do you feel comfortable in sending people up into space at the hands of jerks who are best known for making things that almost always blow up?

2006-09-01 05:57:37 · 13 answers · asked by Anonymous in Astronomy & Space

2006-09-01 05:55:51 · 12 answers · asked by prshadow 1 in Astronomy & Space

or is gravity the same no matter where your at? cause when your inspace there is no gravity....

2006-09-01 05:55:23 · 11 answers · asked by Lipstick 4 in Astronomy & Space

As you surely know NASA used system of crosses in cameras they used to photograph the Moon during Apollo missions to determine the size of photographed objects. But recently I've seen on the net two or three pictures where lunar rocks obstruct parts of crosses. It is phisically impossible. Some say this proofs that those pictures are fake and Americans never landed on the Moon. I don't believe in this conspiracy theory, but on the other hand I'm trying to find any logical explanation for obstructed crosses. Any ideas ?

2006-09-01 05:53:04 · 6 answers · asked by j.juszkiewicz 1 in Astronomy & Space

2006-09-01 05:51:29 · 11 answers · asked by Kansas 2 in Mathematics

2006-09-01 05:49:58 · 9 answers · asked by Anonymous in Engineering

Have looked on Wikapedia and some other places but can't find much, am hoping some of you other Yamsters can help me on this one.

2006-09-01 05:49:47 · 4 answers · asked by kriend 7 in Biology

I know that it's easy to find the symmetries (reversible, fully amphicheiral, negative amphicheiral, chiral) for prime knots; i.e. the KnotInfo search result page here gives them:

http://www.indiana.edu/~knotinfo/results.cgi?knots=3-6&knots=7&knots=8&knots=9&knots=10&name=1&symmetry_type=1&full_symmetry_group=1&option=html

Is there any such table of symmetries of prime links and/or composite knots and/or composite links?

(as always, please correct me if I'm using bad/wrong terminology or asking a bad question.)

2006-09-01 05:49:03 · 2 answers · asked by Anonymous in Mathematics

If someone was to weigh a lorry full of birds, would it weigh more to have all the birds on their perches, or all the birds flying?

2006-09-01 05:48:24 · 22 answers · asked by Matt S 2 in Mathematics

2006-09-01 05:41:26 · 10 answers · asked by arunjp1989 1 in Physics

2006-09-01 05:38:35 · 8 answers · asked by babylon lion 1 in Engineering

i have a vacuum cleaner pump which i want to use in my final year project to reduce the pressure.bt im not able to find out the suction that the pump is generating.the pump has a closed centrifugal impeller and the speed of the electric motor running the impeller is 20,000 rpm approx.how do i calculate the parameters so that i could find a way to increase the suction?

someone plz help me out with this. my project is stuck bcoz of this problem

2006-09-01 05:31:53 · 7 answers · asked by kudva_amit 1 in Engineering

2006-09-01 05:30:35 · 54 answers · asked by lisa J 1 in Biology

2006-09-01 05:30:16 · 16 answers · asked by Tomas B 1 in Zoology

2006-09-01 05:27:32 · 14 answers · asked by Roseline S 1 in Biology

precise answers,websites needed

2006-09-01 05:25:40 · 7 answers · asked by Anonymous in Engineering