Science & Mathematics - 13 September 2007

2007-09-13 04:26:43 · 1 answers · asked by atomiquezero 1 in Chemistry

How do i find the answer and what is the answer to "A soccer player kicks the ball giving it a speed of 76.2 km/h. If the ball travels in a straight line parallel to the ground, how long does it take the ball to reach another player 61.3 m away?"

2007-09-13 04:24:21 · 3 answers · asked by XLR8 2 in Physics

I have heard that the SpaceShipOne spaceship used a technique called feathering where the ship slows down during re-entry to reduce the friction with the atmosphere to reduce the heat on the way in. If this concept was applied to where the ship slowed down VERY much, could there be a point where the ship would encounter a negligable amount of heat, and would not need any heat shilding at all? Also, could the intense re-entry G forces be reduced as well?

2007-09-13 04:21:36 · 4 answers · asked by Michael n 2 in Astronomy & Space

a) molecules
b)isotopes
c)ions
d)radioactive
e)unstable atoms

2007-09-13 04:18:46 · 4 answers · asked by damigurl05 1 in Chemistry

Does any one know what this quantifier means in English and its truth value?

∀x ∈ Z (X^2 ∈ Z)

2007-09-13 04:15:11 · 3 answers · asked by Carlos 2 in Mathematics

Simplify the expression.
tan(sin-1(x))

2007-09-13 04:14:43 · 1 answers · asked by lady_divine@sbcglobal.net 1 in Mathematics

2007-09-13 04:11:49 · 2 answers · asked by Anonymous in Chemistry

model: sanwa Yx-360TRD
made in japan

2007-09-13 04:11:22 · 7 answers · asked by 'Ya 1 in Engineering

2007-09-13 04:08:24 · 11 answers · asked by balaji 1 in Chemistry

A tailor uses 16 ft of lace to trim the edges of a rectangular tablecloth. If the tablecloth is w feet wide, express its area as a function of the width.

2007-09-13 04:08:01 · 5 answers · asked by It's me! 2 in Mathematics

the element Oxygen is a gas that makes up about 20 percent of the earth's atmosphere. Oxygen also is the most abundant element in the earth's crust, yet earth's crust is not a gas. explain this apparent conflict??/

2007-09-13 04:06:49 · 2 answers · asked by beauty mirna 3 in Earth Sciences & Geology

What is the name of Ca(BrO2)2 with any possible oxidation numbers.
p.s. it is not calcium bromite or calcium bromite(II)

2007-09-13 04:06:45 · 5 answers · asked by Anonymous in Chemistry

Would all the sides be congruent??? I need help!

2007-09-13 04:02:39 · 10 answers · asked by aquasahara 2 in Mathematics

Please list the steps you took to get this answer.

2007-09-13 04:00:21 · 2 answers · asked by ny_spinner_dan 3 in Chemistry

its for a science project so it has to be cheap

2007-09-13 03:58:17 · 2 answers · asked by Anonymous in Biology

2007-09-13 03:57:11 · 15 answers · asked by MuffDvr 3 in Chemistry

Write the electron configuration for each of the following ions using the noble gas core notation.

Fe^2+
p.s. it is not [Ar] 4s2 3d4 or [Ar] 4s1 3d5

Cr^3+
p.s. it is not [Ar] [Ar] 4s2 3d1

2007-09-13 03:53:01 · 2 answers · asked by Anonymous in Chemistry

im an evil alien who teamed up with the daleks and were going to take over the earth and we will finally extermite the doctor do you want to help me rule the earth when i form a new covernment and what post in my new cabinet would you like

2007-09-13 03:52:12 · 31 answers · asked by The Funky Alien zombie Bunny 6 in Astronomy & Space

ONLY north america south america and the caribbean please.

2007-09-13 03:48:23 · 7 answers · asked by Clueless4209 2 in Geography

Which of these statements about the scientific method is incorrect?
It is not a group of absolute truths.
It uses experiments that are reproducible
It is used for testing claims about the natural world.
It requires one to propose a theory and perform experiments to give results which confirm or disclaim the theory.
All of these are correct statements.

2007-09-13 03:47:30 · 3 answers · asked by jennifer 2 in Chemistry

What is the maximum mass of hydrogen produced by the reaction of 4.73 g magnesium with 1.83 g of water?

Mg + 2H2O ---> Mg(OH)2 + H2

2007-09-13 03:46:40 · 3 answers · asked by Anonymous in Chemistry

2007-09-13 03:45:46 · 3 answers · asked by Anonymous in Physics

2007-09-13 03:45:29 · 8 answers · asked by pauline17172004 1 in Weather

thank you

2007-09-13 03:44:13 · 3 answers · asked by Anonymous in Chemistry

they are simple sugars and i will like to knowthe tests(chemical) for differenciating the two.

2007-09-13 03:44:06 · 5 answers · asked by adanna 1 in Chemistry

And why the voltage increases when i take it out of the of the refrig??

2007-09-13 03:41:51 · 2 answers · asked by chickenpop 1 in Chemistry

2007-09-13 03:41:14 · 3 answers · asked by stevo_1978 1 in Mathematics

what time of educational requirements do you need and do u need any special licenses????? help asap...

2007-09-13 03:38:09 · 5 answers · asked by Anonymous in Engineering

They can't be any less intelligent than a mosquito, which can fly very well, so why can't butterflies?

Thanks

2007-09-13 03:36:44 · 15 answers · asked by mick dundee 2 in Zoology

2007-09-13 03:35:55 · 4 answers · asked by Anonymous in Engineering