Science & Mathematics - 30 January 2007

2007-01-30 07:30:09 · 1 answers · asked by Ali A 1 in Engineering

2007-01-30 07:30:01 · 9 answers · asked by helenstanko 1 in Physics

2007-01-30 07:29:43 · 6 answers · asked by rappernana13 1 in Mathematics

Can anyone solve: 4 tan x = 3 cos x (in rads 0
I get: 3 sin^2 x + 4 sin x - 3 = 0

which solves to give x = 3.70, 5.718 but this isn't the answer in the back of the book?? Have I slipped up somewhere?

If I am wrong can someone please show me the correct method.

Cheers

2007-01-30 07:27:54 · 7 answers · asked by flyingpig 1 in Mathematics

For a school competion a team mate and I must build and launch a water rocket.

Is anyone a water rocketry hobbist, have any expierence, or have any information that can help us?

Thanks so much( websites are useful to):)

2007-01-30 07:27:31 · 3 answers · asked by Anonymous in Other - Science

There seems to be a lot of controversy over blood and saliva techniques. Tanks.

2007-01-30 07:25:52 · 1 answers · asked by Anonymous in Biology

2007-01-30 07:24:27 · 6 answers · asked by Anonymous in Biology

2007-01-30 07:23:10 · 27 answers · asked by david j 1 in Mathematics

2007-01-30 07:23:04 · 8 answers · asked by Alise 3 in Mathematics

I need help solving the following equation thanks:
ps. can you show me step by step please

5^x=4^(x+1)

2007-01-30 07:20:43 · 14 answers · asked by dyellow84 1 in Mathematics

I need the answers to these questions

1. Where would you expect to find the electrons of an atom with an atomic number of 7?

2. How do covalent bonds differ from Ionic bond?

3.Nails are formed from molten iron. Nails made of iron can rust after exposure to water and air. Which of these changes is an example of a physical change?

2007-01-30 07:20:43 · 9 answers · asked by Anonymous in Chemistry

2007-01-30 07:19:51 · 7 answers · asked by samantha H 1 in Biology

2007-01-30 07:19:50 · 5 answers · asked by Anonymous in Mathematics

it's when we shiver or shudder for a few seconds and we quote"someones just walked over my grave"....where does the expreshion come from and why do we do it when the room temperature is warm

2007-01-30 07:19:46 · 2 answers · asked by tee 2 in Engineering

The misty Head of Horse is in the front of an emission nebula that illuminates the contour of the “head of horse”. I remember histories of Are Jorge, encima of a horse that said this killing a dragon in the Moon. E you! It obtains to digest the two galaxies if finding?

2007-01-30 07:15:22 · 6 answers · asked by britotarcisio 6 in Astronomy & Space

Different types of oil used in saponification can cause varying hardness in the soap. Why is this so?

2007-01-30 07:09:50 · 1 answers · asked by Just Somebody 2 in Chemistry

I met a Guy who i am Assuming is Air-Force who said he works on C-130 avionics. He did not know Ohm's Law.

2007-01-30 07:08:32 · 5 answers · asked by Rusty Shackelford 1 in Engineering

I've read somewhere it crosses 13 countries and 11 somewhere else... which one is it, and which countries are they?

2007-01-30 07:07:32 · 2 answers · asked by Maximus C 2 in Geography

I understand from all the global warming controversy that The Maldives is only a meter or two above sea level and quite panicked about being inundated by rising sea levels as the glaciers melt. One would have thought that the great tsunami of 2 years ago would have resulted in incredible destruction and loss of life there as it did in Sri Lanka and Thailand but from what I understand The Maldives suffered minimal effects. Why?

2007-01-30 07:06:46 · 2 answers · asked by Hank 6 in Earth Sciences & Geology

2007-01-30 07:06:23 · 3 answers · asked by casper_my51 1 in Zoology

Briefly discuss two main science drivers for JWST. Try to be as specific as possible
about
(i) the kinds of astronomical objects and/or science topics that it will study; and
(ii) how it will do better than Hubble and existing ground-based telescopes.

2007-01-30 07:05:29 · 2 answers · asked by thickfaces 1 in Weather

2007-01-30 07:05:18 · 4 answers · asked by goring 6 in Earth Sciences & Geology

2007-01-30 07:05:01 · 4 answers · asked by Misty B 1 in Biology

the average of 5 consecutive integers is 10. the sum of the largest and the smallest of these five integers is

2007-01-30 07:02:39 · 11 answers · asked by Anonymous in Mathematics

because otherwise, space and the universe is dark, pitch black. so that must say theres no other light source else where in the universe, or beyond it. what lies outside the universe, must be dark to. because if there was a powerfull light sorce that surrounded are universe. surly are heavens, outerspace, the universe, would be illuminated by this all powerfull light source...? so with the sun gone, would light not exist anymore?

2007-01-30 07:01:46 · 15 answers · asked by Anonymous in Astronomy & Space

Postulates are accepted as true without proof.

A. True
B. False

2007-01-30 07:01:24 · 5 answers · asked by Rattiesrule 2 in Mathematics

the greatest integer divisor of 1001, other than the number itself is?

2007-01-30 07:00:47 · 4 answers · asked by Anonymous in Mathematics

2007-01-30 06:58:59 · 3 answers · asked by theskyisthelimit02 3 in Chemistry

2007-01-30 06:57:00 · 1 answers · asked by buhlscat 1 in Botany

2007-01-30 06:56:52 · 2 answers · asked by Jared H 1 in Chemistry