Science & Mathematics - 23 August 2007

Scientests said there is a hole in the universe, with nothing in it. can this kill us help me im REALLY SCARED.

2007-08-23 13:02:15 · 6 answers · asked by CoolbutLonely =/ 1 in Astronomy & Space

but couldnt know the answer as sure as you did the question,

wouldnt that be knida like liveing in a totally hanted world

2007-08-23 12:59:30 · 16 answers · asked by Anonymous in Paranormal Phenomena

I have a challenge...well...a semi challenge anyways. That is, I want to see what you know before I know what you see. Read everything before answering...its short.

I want to hear about Daisy. She died two years ago, and I want to know more about how she is doing in the afterlife, if there is one.

I'd prefer for those people who want to comment "I have the gift but I don't want to be tested" and "My gift won't work unless you have complete faith in me" and "there is no such thing as mysticism" to resist comment. I'm looking for answers, not opinions. Thank you very much for your consideration....this means a lot to me.

2007-08-23 12:57:27 · 12 answers · asked by Norman 4 in Paranormal Phenomena

Well?

2007-08-23 12:56:11 · 11 answers · asked by Anonymous in Physics

Here is a picture of a knife and I was wondering what the purpose of the hole towards the end of the blade is.

http://spln.imageg.net/graphics/product_images/p3567612reg.jpg

The knife is large enough so it doesn't make much of a weight difference. Maybe it would be useful if you wanted to bend a piece of metal like a nail?

2007-08-23 12:54:47 · 4 answers · asked by lilfry14 3 in Engineering

Q is the interior of angle ROS, S is the interior of angle QOP, P is the interior od angle SOt, angle Rot= 127 degrees angle sot = 71 and angle roq=angle qos= angle pot

please help me and plas sjow work thank you

2007-08-23 12:51:13 · 1 answers · asked by kyiyna aka keke bka ke 2 in Mathematics

2007-08-23 12:45:31 · 8 answers · asked by GARRY A 1 in Astronomy & Space

Also, what is the purpose of a shadow mask?
Thanks for your answer.

2007-08-23 12:37:04 · 2 answers · asked by wisdom tooth 3 in Engineering

Yes, it's a silly question, so I'm expecting a few silly answers among those offered.

2007-08-23 12:33:22 · 5 answers · asked by night_train_to_memphis 6 in Earth Sciences & Geology

Find the slope of the tangent line to the curve r = 4 cosθ at the point where θ = pi/4.

Then the instructor had this formula: dy/dx = (dr/dθ)/(dr/dθ) =
(sinθ + r cosθ)/cosθ - r sinθ), which for some reason resulted (using r above): (-4sin^2θ + 4cos^2θ)/(4sinθcosθ - 4cosθsinθ). I know that dr/dθ = -4sin, however, I just don't see the correlation between the formula, the derivative of r, and the result she had. Any help is appreciated, thanks!

2007-08-23 12:32:35 · 2 answers · asked by Jorm 3 in Mathematics

2007-08-23 12:32:11 · 5 answers · asked by hridy 2 in Other - Science

1.) if u knew how tall u were at the age of 2, u can estimate your adult height (in inches). girls can use the expression 25+1.17h where h is the height(inches) at the age of two. boys can use the expression 22.7+1.37h. estimate the adult height of each person to the nearest inch.

A.) a girl who was 34 inches at the age of two
B.)a boy who was 33 inches at the age of two

thanks so much! im horrable at algebra........

2007-08-23 12:31:27 · 1 answers · asked by ~♠•S•♠~ 3 in Mathematics

help =)

2007-08-23 12:29:41 · 3 answers · asked by Anonymous in Mathematics

thanks

2007-08-23 12:24:35 · 3 answers · asked by Anonymous in Mathematics

We are measuring the IQ of students at a college. We choose a sample of 30 students, and find for the same a mean IQ of 118.3, with a standard deviation of 11.4. Find the 95% confidence interval for the population mean. I have the answer [114.221 to 122.379] but I want to know the step by step formula to use. I don't know the statistical symbols so if someone can write it out for me I would greatly appreciate it.

2007-08-23 12:24:27 · 2 answers · asked by Will B 1 in Mathematics

isn't this the same as y=mx+b ?
rewritten as 7 = -4x + 2y......is the next step: y=-4/2x+7/2? if not, what is? and please explain.

2007-08-23 12:23:08 · 3 answers · asked by shayne t 2 in Mathematics

a Ball is thrown vertically upward from the ground with an initial velocity of 60 feet per second. How high will the ball go?

a(t)=32 feet per second acceleration due to gravity

2007-08-23 12:23:03 · 2 answers · asked by yeshareg l 1 in Mathematics

If I use a magnet to hold a small clock into a book will it affect the clock?

2007-08-23 12:22:12 · 5 answers · asked by alanthekiwi 2 in Engineering

Help =(

2007-08-23 12:20:55 · 8 answers · asked by Anonymous in Mathematics

First Orion Explorer 90mm
http://www.telescope.com/shopping/product/detailmain.jsp?itemID=294&itemType=PRODUCT&iMainCat=4&iSubCat=13&iProductID=294&relateInfo=3&add=yes#tabLink
second Orion Ezplorer 80mm
http://www.telescope.com/shopping/product/detailmain.jsp?itemID=111184&itemType=PRODUCT&iMainCat=4&iSubCat=13&iProductID=111184&relateInfo=3&add=yes#tabLink
the terms of comparison:
if same amount of chromatic and spherical aberrations are present which image will be the more magnified one. OR:
if both images are equally magnified which will be the one with less aberrations.
I am asking because I learned that refractors' chromatic and spherical aberrations are depend on their focal ratios.

2007-08-23 12:19:23 · 4 answers · asked by OK 1 in Astronomy & Space

2007-08-23 12:15:57 · 8 answers · asked by zipperip 1 in Engineering

1.) -14 < 2j+ 3≤ 6

2.) -3 ≤-x- 5 ≤0

3.) -x+ 5 < 3x+ 1

2007-08-23 12:06:22 · 2 answers · asked by Juan C 6 in Mathematics

Based on Data from three check ups, Tommy's mean height is 62 inch. At the first 2 checkups tommy's height was 58 in. and 61 in. What was his height at the third check up?
__________________________________
different question-


the ages of the participants in a race are 14,23,20,24,26,17,
21,31,27,25,14, and 28
Which measure of central tendency best represets the ages of the participants. EXPLAIN.

2007-08-23 12:03:17 · 4 answers · asked by Morgan 3 in Mathematics

Please show steps...Thanks!

2007-08-23 12:00:28 · 8 answers · asked by Daniel J 1 in Mathematics

i need help

2007-08-23 11:58:32 · 7 answers · asked by Anonymous in Mathematics

what are the two points from this equation so i can graph it

2x - 3y = 9

please if u can, explain

2007-08-23 11:57:54 · 7 answers · asked by Anonymous in Mathematics

2007-08-23 11:45:36 · 8 answers · asked by gabrielle' 1 in Biology

If one twin is in a spacestation and the other is in a ship moving past the station at a high speed, the twin in the ship will have aged less than the one in the station when he returns. (Assume the ship does not stop on return) This is usually explained by the fact that the ship is not an inertial frame because it must accelerate to turn around for the return part of its trip.

But what if the universe is closed and the ship just continues to travel at a constant speed in a straight line until it has gone all the way around the universe and has returned to its starting point? The austronaut never feels any acceleration; this would be an inertial frame. So there is no way to say which twin is "really" moving and which is at rest. The situation is symmetrical for both. So each one should be younger relative to the other.
This seems like a true paradox. Relativity says they can not be the same age. And symmetry says both can claim to have been the one "at rest" and thus the older.

2007-08-23 11:45:03 · 5 answers · asked by Jeffrey K 7 in Physics

this is the question: "describe a situation where you would need to add positive and negative integers."
it's so hard i can't explain!

2007-08-23 11:42:29 · 8 answers · asked by Anonymous in Mathematics

I need to know how to simplify the square root of 50

2007-08-23 11:40:51 · 4 answers · asked by Ashley M 1 in Mathematics