Science & Mathematics - 6 February 2007

2007-02-06 02:54:33 · 5 answers · asked by deeps 1 in Astronomy & Space

I have done an experiment heating water using a spirit buner and i need to explain why combustion reactions are useful but i can't fine the info anywhere

2007-02-06 02:53:59 · 8 answers · asked by Crazy girl 5 in Chemistry

What is the closest active volcano to New England? Is it Yellowstone?

2007-02-06 02:51:22 · 4 answers · asked by n_m_young 4 in Earth Sciences & Geology

I cannot figure out how to do this problem...

The projectile from a be-be-gun which is pointed vertically up reaches a maximum height h1. The maximum height when the same gun is tilted at an angle of 53.54 degrees with respect to the horizontal is h2. What is the ratio h2/h1 ?

i do not want the answer, that will not help me, please explain how to get the answer ... the correct answer for it btw is .6468533363118013 so u can use that the check ur method.


Please help

2007-02-06 02:51:19 · 9 answers · asked by Paul S 2 in Physics

2007-02-06 02:51:01 · 3 answers · asked by daniel e 1 in Chemistry

2007-02-06 02:48:22 · 5 answers · asked by Jacqueline 1 in Chemistry

2007-02-06 02:48:05 · 1 answers · asked by limun 2 in Chemistry

2007-02-06 02:47:21 · 5 answers · asked by Andrew K. 2 in Engineering

a- higher its speed
b- hight its pitch
c- louder it is
d- longer its wavelength

2007-02-06 02:47:04 · 1 answers · asked by Tami B 1 in Physics

How is the behaviour of above two curves? Does one curve define the interior and other the exterior and together they constitute ASTROID? No restictions on values of x or y?

2007-02-06 02:46:46 · 2 answers · asked by Mau 3 in Mathematics

what is dust made of,how did it get the colour and why is it ther

2007-02-06 02:46:25 · 14 answers · asked by chrisyrusell 1 in Astronomy & Space

What does it mean ? the patient already has it or will have it ??

2007-02-06 02:46:14 · 2 answers · asked by dunyat2000 1 in Medicine

a- a vacuum
b- gases
c- liquids
d- solids

2007-02-06 02:45:45 · 6 answers · asked by Tami B 1 in Physics

a- frequency
b- wavelength
c- speed
d- energy

2007-02-06 02:44:49 · 4 answers · asked by Tami B 1 in Physics

2007-02-06 02:44:10 · 3 answers · asked by adil loya 2 in Physics

Interestingly mammals have very rarely evolved poisonous tissue/blood to counter predation, whereas it is very common in insects and plants and exists to some degree in fish. Is there something that is preventing this from evolving or is it present to a lesser degree in mammals, as in some mammals taste bad etc. I feel there must be an evolutionary trade off to being a poisonous mammal for this not to have occurred, or that to distribute enough quick acting poison is probably impossible in large mammals. But even bad tasting or inedible flesh should be enough for predators to quickly learn not to prey on certain mammals. For instance if rabbits were as poisonous as a cane toad or at least inedible, what would stop rabbits from taking over the world (so to speak)?
That seems to point to me an important fact, that intraspecies competition is driving evolution more strongly than interspecies competition, also possibly digestive counter measures are evolving among predators in tandem

2007-02-06 02:43:49 · 2 answers · asked by Anonymous in Biology

2007-02-06 02:43:11 · 5 answers · asked by CuriousJazz 1 in Mathematics

2007-02-06 02:42:31 · 1 answers · asked by Tifferlily 2 in Physics

2007-02-06 02:41:55 · 11 answers · asked by janhavi_jane 1 in Botany

Find the value of k if the function
h(x)=((kx-3)(x-2))/
((7x+9)(2x+5))

has a horizontal asymptote at y=2

2007-02-06 02:38:51 · 3 answers · asked by Anonymous in Mathematics

If the prevailing wind is southerly does it mean it is coming from the south, heading north, or is it from north heading south?

2007-02-06 02:36:03 · 9 answers · asked by Anonymous in Weather

if you have not heard of it, google it

2007-02-06 02:35:41 · 4 answers · asked by msupmod 1 in Engineering

2007-02-06 02:35:35 · 18 answers · asked by moo 1 in Physics

2007-02-06 02:35:24 · 7 answers · asked by Anonymous in Zoology

2007-02-06 02:33:45 · 4 answers · asked by dayjoay 1 in Mathematics

2007-02-06 02:33:40 · 12 answers · asked by sammnpm 1 in Astronomy & Space

2007-02-06 02:32:20 · 8 answers · asked by sealion93 1 in Geography

Where I come from we had an unusual warm weather pattern during September through January, now its blistering cold in February. How about you? Anything unusual going on with the weather near you?

2007-02-06 02:31:47 · 10 answers · asked by zeenahshadow 1 in Weather

I dont know if I'm on the right category, if i'm not bear with me, i'm new at this. Anyway I live in Maryland and it has really been cold these last couple of days and we have direct t.v. Does the cold weather interfere with the satillite? We were getting a few channels yesterday now today we have nothing. Can anybody help me??

2007-02-06 02:30:53 · 3 answers · asked by Leneki 4 in Weather

2007-02-06 02:29:52 · 9 answers · asked by sammnpm 1 in Earth Sciences & Geology