Science & Mathematics - 6 November 2006

a crayon?
a car?
a book?
a computer?

2006-11-06 13:50:55 · 9 answers · asked by Anonymous in Physics

I will love u 4 ever

2006-11-06 13:49:21 · 9 answers · asked by jeflvscrs 1 in Mathematics

A ball is dropped from the top of a 40 m high building. At what INITIAL VELOCITY must a second ball be throw from the top of the building 2.00 s later, such that both balls arrive at the ground at the same time??

Givens...
delta y = -40m
initial velocity of 1st ball = 0 m/s (dropped)

Needs...
initial velocity of second ball = ???


I have no idea on how to do this?!?! i think i have to make two equations equal to each other but i dont think i can because the second ball came 2 seconds later. Please help.



delta x = (Vix)(t)
Vix= Vi cos(pheta
Vy(final velocity) = Viy -gt
delta y = viyt - 1/2gt^2
Vy^2 = Viy^2-2g(delta y)
Viy = Vi sin(pheta

2006-11-06 13:47:06 · 4 answers · asked by Alex M 1 in Physics

2006-11-06 13:46:50 · 2 answers · asked by clydesofmdgets 1 in Chemistry

Could someone please explain, how is entropy related to probability?

2006-11-06 13:46:45 · 2 answers · asked by miledi111 1 in Physics

Let n be a positive integer, and let S be a set of cardinality n. Show (using induction) that there exist n! permutations on S.

2006-11-06 13:45:59 · 3 answers · asked by ifoam 3 in Mathematics

2006-11-06 13:44:54 · 14 answers · asked by flutersboy1 1 in Astronomy & Space

2006-11-06 13:43:56 · 3 answers · asked by wayne h 1 in Geography

i have been studying for a report on carbon and I came across a unit of pressure it is listed as p/GPa and i cant figure out what it stands for

2006-11-06 13:43:14 · 2 answers · asked by cronos51101 5 in Physics

how do u go about solving:
x^2 + 21x= 22


(x^ is x squared)

2006-11-06 13:43:01 · 8 answers · asked by Anonymous in Mathematics

I need the answer ASAP!

2006-11-06 13:42:31 · 1 answers · asked by I\/Iicroknight 2 in Physics

2(x+4)²-3(2x-3)(x+7)
Please explain as you go.
Thanks!!

2006-11-06 13:42:27 · 7 answers · asked by Besch 4 in Mathematics

I have made a theory about the projection of universe, I want to publish it and patent it but I donot have enough of information how to make it possible.

2006-11-06 13:40:47 · 6 answers · asked by abhishek jhathegreati_love_india 2 in Astronomy & Space

is it from the oil rigs, naturally seeping from underground, having to do with the 1969 oil spill? why is there oil?

2006-11-06 13:40:22 · 3 answers · asked by somegirl 2 in Earth Sciences & Geology

for example youre going to buy on something in the mall do you have to say..... how much is that egg x2??? hehe!!!! this is one of the problems that the genuises has to give us.... all the great mathematicians!!.......

2006-11-06 13:39:54 · 4 answers · asked by killua 1 in Mathematics

Have you read any books by Richard Dawkins, Stephen Jay Gould, or any of the other myriad scientists who have written books that explain evolution (Daniel Dennett, Lynn Margulis, Ernst Mayr, E.O. Wilson, Niles Elderidge, etc.)

(And I don't mean reading a couple of paragraphs, but an actual a start-to-finish read.)

If so, what was unconvincing about what you read? Did you find them poorly written? Badly researched? Bad use of sources? Bad science?

2006-11-06 13:36:05 · 10 answers · asked by secretsauce 7 in Other - Science

in terms of atmospheres. i mean, mars' gravity could only keep hold of so much atmospheric gas.

hmm. let's see. we can figure out the gravitational strength by looking up the acceleration due to gravity on mars, which is 3.69 m/s2 at the equator, as compared to 9.81 m/s2 for earth. so the gravity strength is about a third of earth's - does that mean mars can only support a third of earth's atmosphere? if it does, that means it can only support an atmospheric pressure of about 0.3 ATMs, which is pretty much nothing...can humans live in an environment of 0.3 atms?

2006-11-06 13:35:14 · 5 answers · asked by General P 2 in Astronomy & Space

2006-11-06 13:35:09 · 1 answers · asked by thelmadc06 1 in Mathematics

Sean weighs 10 lb more than twice Brad's weight. If Brad gains 10 lb, together they will weigh 230 lb. How much does each weigh now?

2006-11-06 13:31:36 · 13 answers · asked by Anonymous in Mathematics

I have never seen anything like this in my life!!! Continous flashing; saw a ball of fire shoot through it, doesn't seem natural. By the way, no rain in the forecast. Wish I knew what this is; very spooky.

2006-11-06 13:29:03 · 5 answers · asked by fishermanswife 4 in Weather

Not including diamonds.

2006-11-06 13:27:43 · 4 answers · asked by Sophisticat P! 1 in Earth Sciences & Geology

Y/12=18

2006-11-06 13:26:55 · 5 answers · asked by laxlvr20 1 in Mathematics

2006-11-06 13:25:22 · 6 answers · asked by lai 1 in Engineering

morning. How many minutes did Marcia practice in the morning? in the afternoon?

2006-11-06 13:24:59 · 5 answers · asked by lester w 1 in Mathematics

2006-11-06 13:23:55 · 9 answers · asked by sheekaleek2 1 in Chemistry

Please help with Chemistry problems?
I need help with the following 2 problems. Please show how you got the work.

1.Calculate the masses of 0.005 mol Pb(NO3)2 and 0.005 mol oft K2CrO to 0.01 g.

2.The exhaled carbon dioxide produced as a normal waste product of metabolism must be removed from the cabins of space vehicles. On the space shuttle, CO2 is removed from the cabin air by lithium hydroxide, which reacts as follows:

2 LiOH(s) + CO2(g) -----------> Li2CO3(s) + H2) (l)

What mass of CO2 can be removed from the atmosphere by 1.00 lb(454 g) of LiOH?

2006-11-06 13:23:22 · 1 answers · asked by hot4manny 2 in Other - Science

I need help with this question ASAP! Thanks for the help!

2006-11-06 13:21:11 · 5 answers · asked by Anonymous in Earth Sciences & Geology

other than dry ice

2006-11-06 13:20:18 · 9 answers · asked by Anonymous in Chemistry

I have a whole series of equations that I've been doing pretty good on - and I'm almost done and I'm stuck! This is what I have so far but I don't think I'm right...

K2CO3(aq) + Ba(NO3)2(aq) --> 2BaCO3 + 2K2NO3?

Also, any advice on this next one would be greatly appreciated..
HCl(aq) + AgNO3(aq) --> HNO3 +AgCl?

2006-11-06 13:19:16 · 3 answers · asked by Erin B 1 in Chemistry

2006-11-06 13:16:29 · 8 answers · asked by Anonymous in Astronomy & Space