Science & Mathematics - 28 December 2007

2.) What percent of 76 is 15.2?
3.) 138 is 75% of what number?

lmfaoo thanks
I said that the last question would be my last one
but this is seriously my last one
since these are the last problems :D

2007-12-28 15:45:33 · 14 answers · asked by ahhitsjenny 2 in Mathematics

2007-12-28 15:44:06 · 13 answers · asked by alexah 2 in Earth Sciences & Geology

2007-12-28 15:41:39 · 3 answers · asked by Anonymous in Other - Science

2007-12-28 15:39:00 · 1 answers · asked by S=D 1 in Earth Sciences & Geology

As you move away from the earth its gravity gets weaker. But suppose it did not? Suppose it got stronger? If that fictitious law were so, would it be possible for things, like the moon, to orbit the earth?

a) Yes, just as they presently do.
b) Yes, but unlike they presently do.
c) No, orbital motion could not occur.

2007-12-28 15:37:15 · 5 answers · asked by ? 6 in Physics

2 particles, each of mass 'm' and speed 'v', travel in opposite directions along parallel lines separated by distance 'd'. Show that vector angular momentum of the 2-particle system is the same whatever be the point about which the angular momentum is taken.

2007-12-28 15:28:19 · 2 answers · asked by Anonymous in Physics

PLEASE HELP me with these math problems if you want ten points of course :)

5x + 28 = 153
3(2r - 5) + 8(r + 2)
w ? (-2) = 14
Fencing Thirty-six sections of fencing,
all the same length, are joined to form
a fence 180 m long. How long is each
section of fencing?

How are the rules for
solving inequalities similar to those for
solving equations? How are they different?
y - 6 , 9

ok thats all the questions sorry there so long but please please help me Im desperete

2007-12-28 15:28:15 · 7 answers · asked by Serena Van der Woodsen 2 in Mathematics

2,3,5,7,11....are examples of prome numbers. Each number has only itself and 1 as factors. Suppose the number of units in eatch the length and widith of a rectangle are prime numbers and tehe perimiter is 36 units. What is the largest number of square units a number could have?

2007-12-28 15:27:50 · 5 answers · asked by GF 1 in Mathematics

ok me and my dad had this old tape of his by richard hoagland and it was all about mars and the pyramids and how the face and pyramids on mars are like the exact same measurements and alot of cool stuff that is way over my head and we lost it a long time ago any way what i wanted to see is a clip of like at the end of the tape it shows a video of the astronauts and they are filming earth then all of the sudden like 7 lights pop up and hover for a little bit then they zig-zag across the earth and then shoot out across the stars !! by now the astronauts are all about to crap themselves they are like "did you see that?!?!?!?" anyway could anyone tell me where i could see this like a youtube link or a myspace video link . just anything .

this would be reall great if anyone could do this please. thank you for reading

p.s. if you dont know who hoagland is ,he is a scientist that studies the science of mars and previous life on mars .

2007-12-28 15:27:29 · 8 answers · asked by Anonymous in Astronomy & Space

Can you imagine space going on forever? Some say that the universe is still expanding,,,But What is it expanding into??

2007-12-28 15:26:04 · 13 answers · asked by Anonymous in Earth Sciences & Geology

Carson has 140 m. of fencing to enclose a field. He wants to use sides that are only whole meter lenghts. What dimensions should he use to enclose the greatest possible area?

and

The sum of three consecutive integers is 378. What are the intergers?


yeahh, I'm doing my winter break homework, and I just don't remember how to do these, so can guys also explain how you got the answer? THANKS SO MUCH

2007-12-28 15:19:35 · 7 answers · asked by ahhitsjenny 2 in Mathematics

propeller motor being used

2007-12-28 15:17:02 · 2 answers · asked by Anonymous in Engineering

2007-12-28 15:09:02 · 2 answers · asked by Anonymous in Engineering

can these limits be determined without usint L'Hopital's rule? Is there a way to compute them algebraically?

lim as x goes to 1 of (x-1)/(x-x^1/4)

lim as x goes to pi/2 of (5cosx)/(4x-2pi)

lim as x goes to 0 of (1+abs(x))^(1/x)

lim as x goes to 0 of x/(1-2^abs(x))

2007-12-28 15:03:59 · 2 answers · asked by Loopey Shyathorekchee 1 in Mathematics

It's a really easy problem; I just don't know how to do it:

The cost to a furniture manufacturer for making a sofa is $320. The manufacturer then sells the sofa for $496. What is the markup rate?

Please tell me how to solve the problem. (I have a ton of other ones just like it)

Thank you very much!!! :)

2007-12-28 15:03:53 · 6 answers · asked by Anonymous in Mathematics

Seriously. How are they suppose to find out how the universe was created? that's exactly where they are, and can't escape it.

2007-12-28 15:02:00 · 17 answers · asked by Anonymous in Astronomy & Space

if you decide to get plastic surgery, does anyone else besides you and your doctor have to know?

2007-12-28 15:01:41 · 10 answers · asked by Anonymous in Medicine

Is it possible to deduce the type of change - linear or otherwise - undergone by the radius describing a spiral..and what is it that is forcing the tip of 'r' to describe a 'circular..?(it's not coming back on itself,so is it circular at all..?) path - in other words, I suppose, what is the formula for that motion?

2007-12-28 14:58:11 · 5 answers · asked by c0cky 5 in Mathematics

this one physics teacher at my high school showed an experiment to me last year and it involved him using a straw and a lab cup filled with water(i think or some sort of blue liquid). he blew into the cup with the straw and then made the liquid become green. he never really told me what caused it to become green.

2007-12-28 14:51:53 · 4 answers · asked by IDchecker27 2 in Physics

star thas question if u think it is interesting..

2007-12-28 14:47:26 · 10 answers · asked by Anonymous in Physics

I mean, if a tornado can shake/tip over/pick up a truck or something...... how is someone who weighs just over 100 pounds - going to be safer?

And what if there are no ditches?

It would pick me up in a second. Whereas a car may just shake a little?!

And what if there are no ditches?

2007-12-28 14:37:41 · 6 answers · asked by ... 5 in Weather

2007-12-28 14:37:31 · 7 answers · asked by Anonymous in Geography

i Know its somehow related to Bernoulli's theorem...but not able to figure out...How?

2007-12-28 14:33:25 · 8 answers · asked by ¿Spooky - Version 0.2? 3 in Physics

I am not sure if it is the aliens or the communists, but someone is trying to control my thoughts by using gamma ray technology. Sometimes I can hear them placing suggestions into my brain. I have tried using ultraviolet lights in my room, but that doesn't seem to help much.

2007-12-28 14:26:20 · 14 answers · asked by tlldob 4 in Physics

what does it mean when a 15 month old has excess nitrogen in kendeys

2007-12-28 14:25:35 · 2 answers · asked by italiaprincezza24 1 in Earth Sciences & Geology

The bonnets are made of something like canvas and are open over the horns. There are about 15 cows or steers all with the same kind of covering over their heads.Do you have any idea what the bonnets are for or why they are wearing them.
(No silly, ridiculous answers, please)

2007-12-28 14:25:08 · 11 answers · asked by James W 1 in Agriculture

Speaks for itself

2007-12-28 14:20:09 · 8 answers · asked by Anonymous in Biology

Does anybody know if ythe ripstick or the wave is better? I REALLY need to know!

2007-12-28 14:12:03 · 2 answers · asked by HarryPotterfan12 1 in Physics

So I just tried to find the correct answer for one of my exam questions, and I got the same answer! Maybe my teacher corrected it wrong?

Tell me what you guys get:
2/3(4-x)≥1/2

I got 3 1/4 several times already!

2007-12-28 14:07:11 · 6 answers · asked by :o) Sunshine 3 in Mathematics

i only wish to experiment with miniature rockets for my education and entertainment
thank you for your help

2007-12-28 14:06:22 · 5 answers · asked by Anonymous in Engineering