Science & Mathematics - 13 September 2006

A car enters a tunnel that is 100 meters long with an initial speed of 20 m/s. If the car exits the tunnel at a speed of 30 m/s what was the average accelaration of the car while it was in the tunnel?

2006-09-13 09:26:59 · 12 answers · asked by Anonymous in Physics

If we have the same poles of two magnets very close toghether (repelling each other)..is there any element that put between this two mangnets can cancel this repulsion effect?.
I don't think so but just want to make sure.

2006-09-13 09:25:20 · 7 answers · asked by tetraedronico 2 in Physics

2006-09-13 09:25:17 · 10 answers · asked by Anonymous in Astronomy & Space

2006-09-13 09:23:23 · 9 answers · asked by Niceyguy 2 in Biology

thanx

2006-09-13 09:21:42 · 3 answers · asked by 1234567890 1 in Mathematics

2006-09-13 09:18:37 · 18 answers · asked by Anonymous in Mathematics

2006-09-13 09:13:50 · 7 answers · asked by Smallville_gal 1 in Mathematics

Find the equation of the line tangent to the ellipse
b^2*x^2 + a^2*y^2 = a^2*b^2
in the first quadrant that forms with the coordinate axes the triangle of smallest possible area (a,b)>0.

2006-09-13 09:11:05 · 5 answers · asked by Anonymous in Mathematics

2006-09-13 09:10:49 · 19 answers · asked by nava_clue 2 in Astronomy & Space

your parents leave in their car towards the airport that is 50 km a way. Five meters after they depart you realize your father forgot his heart medication.If you leave immediately for the airport, with his pills , how fast must you drive in order to beat your parents to the airport, assuming that they are driving the legal speed limit of 100 km/h?

2006-09-13 09:10:26 · 2 answers · asked by Hamza 1 in Physics

General relativity says that gravity is nothing more than the inertial effects of curved space. I'm having trouble visualizing that in day to day experiences.

2006-09-13 09:08:42 · 8 answers · asked by garyhorne55 1 in Physics

2006-09-13 09:07:32 · 10 answers · asked by Anonymous in Other - Science

2006-09-13 09:06:00 · 17 answers · asked by kyle o 1 in Weather

i need it for school n_ñ

2006-09-13 09:05:07 · 2 answers · asked by neko_angel_2212 1 in Physics

so, if space debris such as meteors are landing on earth, does it gradually make earth heavier, and larger. There for making the earths rotation slightly slower??

2006-09-13 09:04:23 · 9 answers · asked by keatze 1 in Astronomy & Space

Oh Lord, this is such a dumb question but I can't wrap my head around it. My walking trail is .37 of a mile. How many times do I need to walk it to make 1 mile? I'm not an idiot I just can't think today!

2006-09-13 09:04:22 · 13 answers · asked by Anonymous in Mathematics

I'm curious, I've heard about a powdered form of mary Jane, but is it real?

2006-09-13 09:03:53 · 3 answers · asked by Jason M 1 in Medicine

Given x,y,z > 0 and xy+yz+zx <= 8/9
and S=x+y+z+(2/x)+(2/y)+(2/z)
Find the Minimum Value of S and (x,y,z) for that S

2006-09-13 09:00:45 · 2 answers · asked by Anonymous in Mathematics

2006-09-13 08:58:22 · 3 answers · asked by Beautywithbrains 2 in Other - Science

How much load can I put on a 200 Amp Panel according to the NEC???

2006-09-13 08:57:21 · 5 answers · asked by alex_blanding2001 1 in Engineering

How much load can I put on a 200 Amp Panel according to the NEC???

2006-09-13 08:57:06 · 1 answers · asked by alex_blanding2001 1 in Engineering

"SEE" back to the time when the Universe became transparent?

2006-09-13 08:56:43 · 12 answers · asked by TommyTrouble 4 in Astronomy & Space

I read a bit on quantum entanglement and from the little I read it seems that quantum particles are not limited to the speed of light constant. Will this propery of quantum physics someday allow us to communicate with other ships, planets, solar systems or galaxies without limiting our communication attempts to light speed?

2006-09-13 08:53:38 · 8 answers · asked by T F 3 in Astronomy & Space

I have two servers at a grocery store. P(server 1) is 0.4. P(server 2) is 0.6. P(time is less than 5 min | server 1) is 1. P(time is less than 5 min | server 2) is 4/9. What is P(server 1 | time is less than 5 min)? Would it be 1/(1+ 4/9) or do the weightings from before come into play?

2006-09-13 08:52:32 · 3 answers · asked by kweise 2 in Mathematics

Can someone explain how the following works please:

1) = 2 + 3 + 3 root 5 - root 5
= 5 + 2 root 5 (I'm not sure where 5 + 2 comes from, I
would've thought it'd be 5 + 3)

2) = 4 + 2 root 3 + 2 root 3 +3
= 7 + 4 root 3 (I know 4 + 3 = 7 and 2 + 2 = 4 but why is it
added in this way?)

3) = root 2 x root 2 + root 2 x 2 root 3 x root 2 + root 3 x 2 root 3
= 2 + 2 root 6 + root 6 + 2 x 3
= 8 + 3 root 6 (A lot of roots sorry, but very confused!)

4) = 2 x 2 - 2 x root 3 + root 3 x 2 - root 3 x root 3
= 4 - 2 root 3 + 2 root 3 - 3
= 1

Any help please would be very greatly appreciated!! :o)

2006-09-13 08:52:30 · 7 answers · asked by pixie.wings 1 in Mathematics

WOuldn't it be cool to feel like the explorers did in the 1500-1600's,
but on a even greater scale, with the whole world following your exploits on 10-minute delay, just like "The Truman Show"?

2006-09-13 08:51:53 · 19 answers · asked by Anonymous in Astronomy & Space

this is one of my science lab questions
how is volume different than area

2006-09-13 08:39:31 · 12 answers · asked by Anonymous in Other - Science

What is the mathematical definition of a function?

2006-09-13 08:38:27 · 5 answers · asked by gg 4 in Mathematics

is a nose job very noticable? we're gonna have our high school reunion in 2008. i dont like my nose, i always havent liked it. i went diving when i was a teen and bumped it on the bottom. yeah it wasnt a genius thing to do but i guess i overestimated the pool. haha :)

im saving up to fix it next year march..how noticable would it be?
i would die if anyone points it out in front of a lot of people.

2006-09-13 08:36:17 · 8 answers · asked by helena2581 2 in Medicine

2006-09-13 08:36:10 · 7 answers · asked by MegN 1 in Physics