Science & Mathematics - 20 September 2007

A skydiver jumps from a plane 1000 meters above the ground. He waits for 8 seconds and then opens his parachute. How far above the ground is the sky diver when he opens his parachute? I really need the answer tonight! Please help if you can! Thanks.

2007-09-20 10:02:33 · 3 answers · asked by ☺♠JonasJay♫♦ 5 in Physics

2007-09-20 10:00:44 · 7 answers · asked by Trina M 1 in Mathematics

homework help

2007-09-20 09:59:57 · 4 answers · asked by chicagoburbsss 2 in Astronomy & Space

I just started calculus and i know this is a pretty simple question just mostly using the power rule but i can't seem to get the right answer which is (x^3-8)/x^3

2007-09-20 09:59:38 · 5 answers · asked by Anonymous in Mathematics

Would any Christians ever take a class regarding these natural concepts? I would think they would want to learn everything they could about this so they could strengthen their own faith when they legitimently prove them as false.

2007-09-20 09:59:35 · 9 answers · asked by Spades 1 in Other - Science

pangea

2007-09-20 09:54:58 · 8 answers · asked by Anonymous in Geography

According to the following reaction, how many moles of silver nitrate are necessary to form 0.689 moles iron(II) nitrate?

iron(II) chloride (aq) + silver nitrate (aq) iron(II) nitrate (aq) + silver chloride (s)


thank you very much

2007-09-20 09:54:44 · 1 answers · asked by turk6060 3 in Chemistry

answer in either earth minutes or earth hours. please and thank you.

2007-09-20 09:54:37 · 9 answers · asked by heavensdevilvr 1 in Astronomy & Space

So yeah can you help me? I have got a few but i was wondering if you could help me out with things that shine pleaseee

2007-09-20 09:53:01 · 3 answers · asked by Anonymous in Earth Sciences & Geology

What is the average acceleration of a plane going 140mi/h in 2.10s ?

2007-09-20 09:52:48 · 1 answers · asked by chinwe 1 in Physics

using the order of operations

2007-09-20 09:50:08 · 9 answers · asked by x0shortie13x0 2 in Mathematics

2007-09-20 09:47:15 · 2 answers · asked by New Mommy 1 in Physics

if 10.3 = 12/b
what is b?
this might not be possible, im not sure...i suck at maths

2007-09-20 09:46:37 · 10 answers · asked by plasticbag 2 in Mathematics

pls help meeee!!! i dnt understand

tanx guys

2007-09-20 09:45:17 · 15 answers · asked by -x-lollie-x- 1 in Mathematics

Find the error 80% of students could figure this out!! Help!!

2007-09-20 09:45:00 · 4 answers · asked by Jae Rae 3 in Mathematics

i have a science fair project comming up and i need help(alot)
(pronto)!!!!!!!!!!!!!!!!!!!!!!

2007-09-20 09:44:35 · 9 answers · asked by Elizabeth C 1 in Chemistry

How would I convert 1.49 x 10^-5

and 9.993 x 10 ^-2

2007-09-20 09:43:13 · 5 answers · asked by San s 1 in Mathematics

2007-09-20 09:42:52 · 6 answers · asked by evie™ 1 in Other - Science

Can anyone help - I am ok when calculating something dropped, but I don't know what I need to find out in the following;

A particle is thrown into the air at a speed of 15m/s from a height of Hm and reaches the ground in 4secs. Find the greatest height it reaches and the value of H.

2007-09-20 09:42:24 · 2 answers · asked by Anonymous in Physics

I don't even know what to do with this problem!! Please help me....

x^2+2x+1=0

and the choices are
1. 0;1 real solution
2. -4, no real solutions
3. 4;2 unequal real solutions

I appreciate any and all help. First with the most helpful answer gets my vote for best answer :P

2007-09-20 09:40:32 · 3 answers · asked by Anonymous in Mathematics

just email me and i will ask my question.
thank you for your patience.

2007-09-20 09:40:00 · 8 answers · asked by Anonymous in Paranormal Phenomena

Chemical Reaction:

2Mg+O2 ===> 2MgO

Mass of crucible and lid- 30.89g
Mass of crucible, lid and Mg Ribbon- 31.04g
Mass of crucible lid and product- 31.08g

Calculate the mass of magnesium metal and the mass of the product. Use the law of conservation of mass to calculate the mass of oxygen that combined with magnesium.

I think I got the mass of the magnesium metal and the product, but I'm not sure. I got 0.15g of magnesium metal and 0.40g of magnesium oxide. Am I right? And how would I calculate the mass of the oxygen that reacted?

Thanks!

2007-09-20 09:38:31 · 3 answers · asked by Anonymous in Chemistry

How in the heck do I solve this problem!?!

-28-16i / 1-5i

Any help would really be appreciated!

2007-09-20 09:34:20 · 5 answers · asked by Anonymous in Mathematics

what is true about the following sequence?
(27,29,27,29,27,29,...)
a) it converges to 28
b) it converges to 27
c) it converges to 29
d) it diverges

2007-09-20 09:33:47 · 1 answers · asked by the_hockey_guy1990 1 in Mathematics

What is the most disgusting insect you can think of?

2007-09-20 09:31:13 · 20 answers · asked by captbullshot 5 in Zoology

2007-09-20 09:30:48 · 1 answers · asked by Fatima I 1 in Physics

if the corn starch is in powder form, is it considered a fluid? please answer quickly and provide a link to prove it. thank you

2007-09-20 09:29:42 · 4 answers · asked by Anonymous in Chemistry

I am in the 8th grade, and we have to do a science projects!! I really want to do one on my dog, he is a pom...but i dont want to train him for a science project cause it took me a while to teach him how to sit, lay down, and shake. please help!

2007-09-20 09:29:27 · 2 answers · asked by Anonymous in Other - Science

2007-09-20 09:28:40 · 12 answers · asked by curious________ 1 in Other - Science

find the disrance from A of the centre of mass of the given set of particles.

. 2a . 3a . a . < lengths
A_________o____________o______B
. 4m . m < mass

the answer to where the centre of mass is at is 13/5a

i cant work out where this came from i have a sigma formula to work with and got to x bar = 2a4m + 5am but who knows.

Help please and method please would be delightful thank you muchly.

2007-09-20 09:28:23 · 2 answers · asked by Jezza 2 in Physics