Science & Mathematics - 24 September 2007

Mine is Vega!!!!!

2007-09-24 14:45:17 · 13 answers · asked by chahn11 4 in Astronomy & Space

2007-09-24 14:45:11 · 4 answers · asked by Anonymous in Zoology

have there ever been reports of tigers working together to catch prey?

2007-09-24 14:45:03 · 4 answers · asked by Eye Of the Tiger 2 in Zoology

Why hasn't Celsius come into general usage in the United States?

2007-09-24 14:44:03 · 1 answers · asked by liltchaser 2 in Weather

please tell me!! ASAP!!!!

2007-09-24 14:41:25 · 1 answers · asked by frazy13 2 in Physics

2007-09-24 14:40:02 · 3 answers · asked by Amanda 1 in Biology

Its so stupid and all the definitons give you big fancy explanations. Thanks

2007-09-24 14:39:01 · 3 answers · asked by El-Tino 2 in Physics

Suppose Dvf (a) exists. Prove that D-vf (a) exists and calculate in terms of the former.

2007-09-24 14:35:53 · 2 answers · asked by Dr H 2 in Mathematics

I have no idea where to begin to figure out whether any arctan function diverges or converges -- how would I even take its limit? Can I use l'hospital's rule somehow, or is there a better way?

2007-09-24 14:33:33 · 4 answers · asked by jlukew 2 in Mathematics

A)The energy emitted by radioactive isotopes can break bond and cause molecular damage in cells.
B)The Nuclei of radioactive isotopes are unusually stable, but the atoms tend to lose electrons.
C)When given a choice between radioactive and nonradioactive isotopes of the same atom, living cells are more likely to incorporate the radioactive isotopes into their structures.
D) The tracers typically used for diagnosoing medical problems remain radioactive in the body for a number of years, but give off very low levels of radioactive energy.
E) ALL of the choices are true.

2007-09-24 14:27:44 · 2 answers · asked by Travelingstar 1 in Chemistry

i have answers to all of the questions except the following
1.what did the early greeks think all things where made of
2.what was one of the earlyest forms of chemistry
3.what was arranged into a systematic cahrt by dmiri mendellev
4.what did alchemists tri to make metals such as lead and iron into


well that is it and i would really apreacieate your help

2007-09-24 14:25:36 · 1 answers · asked by Steven O 2 in Chemistry

A climber near the summit or a vertical cliff accidently knocks loose a large rock. She sees it shatter 8 s later at the bottom of the cliff. What was the speed of impact? How far did the rock fall?

2007-09-24 14:23:11 · 1 answers · asked by victoria r 1 in Physics

I need to make notecards answering some questions. They have to do with Bromthymol Blue. The problem is: "What reationship exists between aquatic plants (Elodea) and animals (snails) in the cycling of matter?"

The questions I haven't found the answers to are:
1. Which cycle is being investigated?
2. What substances are involved?
3. Which organisms produce which substances?
4. Which organisms use which substances?
5. What processes are involved?

Some internet sources in which I could find the answers to these questions would be a lifeaver to me! Thanks so much!

2007-09-24 14:22:09 · 2 answers · asked by Tayler 2 in Biology

2007-09-24 14:21:22 · 7 answers · asked by Rose 2 in Medicine

When you weigh yourself on good old terra firma (solid ground), your wieght is 152 lb. In an elevator your apparent weight is 132 lb.

2007-09-24 14:21:11 · 1 answers · asked by Anonymous in Physics

would the blast wave ever stop, or would the blast be bigger because there is no pressure to contain it in a certain area!

2007-09-24 14:20:21 · 6 answers · asked by Anonymous in Astronomy & Space

If x denotes the length of a side of an equilateral triangle, express the area of the triangle as a function of x.

please explain

2007-09-24 14:19:12 · 9 answers · asked by Anonymous in Mathematics

2007-09-24 14:14:18 · 1 answers · asked by michael l 1 in Physics

i need help find the value of x

2007-09-24 14:13:21 · 12 answers · asked by Anonymous in Mathematics

I have a project about a self-sustained imaginary space station. it is basically a mini-earth. Everything is the same as Earth except that it has no fish, and fewer animals/plants/etc.

For details look at my other questions :)

For this project I have to describe and illustrate the path of energy and matter through living systems and the physical environment . <--- I do not get this part... What does this mean??? energy and matter ??

The things I need are the foob web/chain (know this) , trophic levels (what is this?? Do not get this), and biomass(What is this)..

and how should I draw out a trophic level, biomass............ plz help

2007-09-24 14:11:43 · 2 answers · asked by Anonymous in Biology

The rule of the zero exponent is that the outcome always equals 1. Is this also true for negatice numbers? And is that outcome positive or negative?

Thank you in advance for your help.

2007-09-24 14:08:52 · 8 answers · asked by Anonymous in Mathematics

waht is the capitol of switzerland?

2007-09-24 14:08:09 · 9 answers · asked by Anonymous in Geography

2007-09-24 14:07:26 · 9 answers · asked by Anonymous in Geography

2007-09-24 14:07:19 · 2 answers · asked by Anonymous in Chemistry

If f(x) = x^3 - (a + b)x^2 + abx, find the value of f(a) and explain the significance of x - a.

2007-09-24 14:06:30 · 2 answers · asked by Chess 2 in Mathematics

2007-09-24 14:06:17 · 4 answers · asked by manzz 1 in Chemistry

2007-09-24 14:05:04 · 3 answers · asked by area_0130 1 in Mathematics

what are three types of maps i have political and physical

2007-09-24 14:05:00 · 3 answers · asked by DoMiNoEs 1 in Geography

2007-09-24 14:04:27 · 3 answers · asked by Master-Kun 2 in Geography

Why not make a sports bra for the shuttle, It would be a fitted kevlar cover that would protect the tiles on the way up, then released from the shuttle, and retrieved, and reused. What do you think of this Idea?

2007-09-24 14:03:10 · 9 answers · asked by Anonymous in Astronomy & Space