Science & Mathematics - 12 October 2006

I have a hard question which I just cant do can anyone help me?

Triangle of froces.
figures: 1) 5N at 15degrees to above west of the horizontal.
2) 7N at 20degrees to the above west of the horizontal
3) unknown force??

question A) To show that coplanar forces acting on an object in equilibrium graphically by a triangle of forces.
B) To solve analytically the same force system as in (A) above.


Please may someone teach me this if you have any visual representations then send them to mini_elliso@hotmail.co.uk

Thans everyone

2006-10-12 07:30:03 · 5 answers · asked by louie_ellis 1 in Physics

What experiment could you perform to test the hypothesis that higher CO2 levels in a cage equals increased breathing rates of the animal in that cage? [preferrably without violating animal rights ;]

2006-10-12 07:29:06 · 2 answers · asked by Linduh. 3 in Biology

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2006-10-12 07:26:35 · 6 answers · asked by Rachit 1 in Astronomy & Space

2006-10-12 07:25:07 · 2 answers · asked by Rachit 1 in Astronomy & Space

I am in my sophmore year of college and have an overall good GPA 3.5 currently if I don't do so well in Organic Chemistry (a B or C) will that kill my chances for medical school admissions.

I volunteer at a hospital, work 15-20 hours a week, and have travelled abroad if that plays into the decisions.

2006-10-12 07:24:26 · 6 answers · asked by i_luv_vball21 2 in Medicine

2006-10-12 07:23:27 · 10 answers · asked by Issac J 1 in Earth Sciences & Geology

I need to understand this. My text book explains it to me, but it just doesn't click. Could someone put this into thier own words, so that you can help me to understand this better??
Thankyou for your help. It is very much appreciated.

2006-10-12 07:20:51 · 2 answers · asked by chickiepoosie 1 in Biology

2006-10-12 07:18:21 · 3 answers · asked by Anonymous in Astronomy & Space

For example, does one year feel longer for one person than it does for another? Is this linked to any kind of chemical in the brain or body?

Also...when we have a good time somewhere, things seem to go by more quickly than they do when we're not enjoying ourselves. Is any of this linked to a chemical or mechanism that changes our perception of time?

Have any studies ever been done on this or is there any kind of scientific or medical explanation?

2006-10-12 07:17:11 · 4 answers · asked by The Answer 2 in Physics

For example, does one year feel longer for one person than it does for another? Is this linked to any kind of chemical in the brain or body?

Also...when we have a good time somewhere, things seem to go by more quickly than they do when we're not enjoying ourselves. Is any of this linked to a chemical or mechanism that changes our perception of time?

Have any studies ever been done on this or is there any kind of scientific or medical explanation?

2006-10-12 07:16:39 · 4 answers · asked by The Answer 2 in Other - Science

in the centre of the earth, there is said to be a core which inside is magma at a very high temperature, but how do we know this, no one has evr been there.

2006-10-12 07:15:01 · 6 answers · asked by Andy C 1 in Earth Sciences & Geology

true or false, classify this statement as true or false for all real numbers

2006-10-12 07:12:59 · 7 answers · asked by sammy 1 in Mathematics

ppl always told me i should not use extension cord for some mini appliances like aircon, etc.
why?
can u tell me? im just curious.

2006-10-12 07:12:50 · 9 answers · asked by Anonymous in Engineering

to do with sheets of metal steel and iron etc

2006-10-12 07:12:45 · 24 answers · asked by bill d 1 in Chemistry

i m asked to make working model, is there any one who can give me ideas in this regard.

2006-10-12 07:10:03 · 6 answers · asked by sahil 1 in Zoology

Were doing an abortion debate, though I am not sure what the latest a woman could have a abortion?

UK deadline would be good too.

Thanks

Kain

2006-10-12 07:08:44 · 6 answers · asked by kanesfigures 2 in Biology

It's going to have miniature mechanics, so they need to be someone whoe can work with tiny lathes on hard metals. Doesn't matter of the location.

I'll split the profits 60% - 40% with a contract.

2006-10-12 07:06:24 · 2 answers · asked by Rockstar 6 in Engineering

Imagine you have a bird, flying directly north. The sun is shining directly east (from the west). There is a wall to the east of the bird which runs at an angle so that as the bird flies forward it's perpendicular distance from the wall increases (e.g. running south-west to north east). So, as the bird flies north, it's shadow moves up the wall, going north at exactly the same speed. But because the wall is at an angle, the shadow is actually moving a greater distance than the bird in a set amount of time. So, the shadow is moving faster than the bird by a certain ratio.
Now imagine that (somehow) this bird could travel at nine tenths the speed of light (this is theoretically not impossible according to our current knowledge of physics,). The shadow would therefore be travelling faster than the speed of light.

I know that the explanation for this is that a shadow is not a 'thing', but using this method to send a signal, information could be transferred faster than the speed of light.

2006-10-12 07:06:04 · 13 answers · asked by THJE 3 in Physics

I am not asking about sheep, I am asking about 'sheeple'.

2006-10-12 07:01:26 · 6 answers · asked by coreander 4 in Biology

I didn't say the earth, I said the universe. Like creating a black hole or causing magnetic monopoles thus providing an impetus for proton decay?

2006-10-12 06:56:31 · 7 answers · asked by Anonymous in Physics

No sci-fi show or movie answers, please.

2006-10-12 06:55:50 · 10 answers · asked by Anonymous in Other - Science

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I have not register my pattent yet

2006-10-12 06:50:36 · 5 answers · asked by Anonymous in Other - Science

I have not register my pattent yet

2006-10-12 06:50:02 · 1 answers · asked by Anonymous in Engineering

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