Science & Mathematics - 2 December 2006

Continued from:
http://answers.yahoo.com/question/index?qid=20061202195314AAu610R&pa=FYd1D2bwHTHwIr9nFe0ySF_cMwtuF.pupx.OfOL2yvPEn36mbbvp9p4Y1Ena5U0Xs0iKFVIfMIX8uA--&paid=asked&msgr_status=

I've been taught in school, that stars regularly turn supernova, that this is a common event for stars after being around in space for so long. Also I've been told our sun will come to a point where it will turn supernova aswell, and will likely destroy the earth within the wake of this cosmic event. This suggests to me that a force unfathomable to me will be propelled from the sun, colliding with the earth, busting it to bits, or throttling us out of the orbit we used to have with our now, non existant sun. (granted we need the sun but would earth REALLY blow up?)

I would like to know of the destructive capabilities of a supernova, also the repricussions it will have on a planet nearby. Sorry for using 2 posts for 1 question, i just want to be specific Thank you for your replies, Its appreciated

2006-12-02 14:57:52 · 5 answers · asked by Accellerated Catalyst 3 in Astronomy & Space

2006-12-02 14:56:46 · 3 answers · asked by ? 1 in Medicine

also, how u got it
1.A bookstore has a nice discount policy. If you buy a $20 book today, you get a 2% discount on your next buy. If u buy a $15 book, u get a 1.5%discnt on ur next buy. If you have to buy 3 books costing $10, $20, $30, you could buy the $30 book 2day, the $10 tomorrow (you'll get a 3% discnt), and the $20 the day after (1% discnt). Or u could buy the 30% book and the $20 book today, and the $10 tomorrow (with 5% dis) What is the cheapest way to buy 5 books costing $10, $20, $30,$40,$50?
2. An indiscreet young man asks his beautiful math teacher her age. She says," todays date is my age, although b4 this week is over there will be another day with a date 1/5 of the new age that i'll be." what's her sign of the zodiac?

2006-12-02 14:56:26 · 5 answers · asked by Anonymous in Mathematics

I was reading of some interesting series of events during the Kennedy administration during the cold war. The information was provided to me that over a couple of years, Russia and the United States of America were testing Thermonuclear devices in the outter limits of our stratosphere attempting to "knock out" radio communications by the produced EMP.

Through these readings I learned some obvious facts that werent really considered before, namely that a thermonuclear device will not dispurse a "nova" or circular shock wave, often misconceived by popular Space / Sci-Fi shows such as Stargate SG-1 or Star Trek. I'm sure you understand what I mean when I say it just fizzles out when a Nuke blows up in space, so I'm curious... When a star reaches its critical mass and reaches supernova, how does the star manage to throw energy waves into space where a nuclear device can not?
*I need more room* Continued...

2006-12-02 14:53:14 · 8 answers · asked by Accellerated Catalyst 3 in Astronomy & Space

is y=3x^2 linear ?

y=lx+3l linear?

2006-12-02 14:53:08 · 5 answers · asked by jean p 1 in Engineering

the orbit of Venus is more sharply curved than the orbit of mars. How could this be explained according to Newton's second law of motion?

2006-12-02 14:45:05 · 4 answers · asked by KUMAR 2 in Physics

a lot of animals have mating seasons, and u can argue that all seasons are human mating seasons, but lets say we had a certain time ... when would it be and why? would u like it or would u rather it stays the same way?

2006-12-02 14:44:15 · 10 answers · asked by Gahhhhhh 3 in Biology

There is a square grid. In the lower left corner is A and in the upper right is B. A diagonal is drawn from A to B and you are not allowed to go above it while travelling from A to B. You can only move right and up. In how many ways in an n x n grid can you travel from A to B? Prove your answer.

(I know that without the diagonal, there are (2n) C (n) ways.)

2006-12-02 14:43:42 · 1 answers · asked by khard 6 in Mathematics

What else can I say......... It doesn't make sense.....

2006-12-02 14:42:44 · 10 answers · asked by Renae A 1 in Other - Science

Question Binomial random variable help
If X = a binomial random variable with parameters n and p, with 0
How do I show that P[X=k+1] = [p/(1-p)][(n-k)/k+1)]P[X=k]

Also, how do I prove that as k goes from 0 to n, P[X=k] first increases and then decreases, with it reaching largest value when k is the largest integer less than or equal to (n+1)p.

2006-12-02 14:42:18 · 1 answers · asked by abe_cooldude 1 in Mathematics

I forgot how to make the sensation work I want to show my sister how to do it, Any one remember?

2006-12-02 14:40:17 · 1 answers · asked by Baby Julie due 5/12 3 in Biology

2006-12-02 14:39:00 · 6 answers · asked by alan 1 in Engineering

One evening I was outside and in the sky I could see the exact line division between day and night right over my head. On one side you could see the blue skies while on the other it was as dark as it would be at night. But the odd thing is that it was as if there was a perfect line seperating the two so explicitly.

Has anyone else ever experienced/seen this

2006-12-02 14:38:55 · 10 answers · asked by Anonymous in Astronomy & Space

2006-12-02 14:37:56 · 15 answers · asked by ntsh_byd 2 in Earth Sciences & Geology

What is the relationship between slopes of parallel lines?

2006-12-02 14:36:48 · 6 answers · asked by SweetnSpiceyBrown 2 in Engineering

It's not NH3 from what I've learned so far. CuCl2 will ppt with any soluble salt of a silver group, but will MgCl2 as well?

Question 2: I need a reagent that will form a ppt with soln of Cu(NO3)2, but not with a soln of Sb(NO3)3. All I could find here is that Cu2+ will ppt with neutral and negative ligands.

2006-12-02 14:33:59 · 1 answers · asked by bitty_bri 2 in Chemistry

such as: color, odor, whether it is dangerous-explosive, radioactive, noxious

2006-12-02 14:31:02 · 4 answers · asked by viviansam<3 1 in Chemistry

Hi, I've got this question that I'm unsure about how to approach. I was wondering if anyone could give me a hand or steer me in the right direction.

I've got some sample data.. what it represents isn't really important. The first group is 782, 965, 948, 1181, 1414, 1633, 1852. The second group is 593, 672, 750, 988, 1226, 1462, 1698. The means of each I calculated to be about 1253 and 1055 respectively.


The question is to find a 95% confidence interval for the difference in the means. I'm confused because no standard deviation is given (and usually is in our class), so I'm a bit unclear as how to standardize this to find the CI using the methods I know about. Can anyone help me out?

Also then I am suppose to test this confidence interval to test the hypothesis that the difference in mean is 200 against the alternative that is something else.

2006-12-02 14:29:52 · 3 answers · asked by abe_cooldude 1 in Mathematics

I have no idea how to do this, and it's a pretty long problem. I'd be eternally grateful if some kind soul out there can help me.

There are three consecutive positive integers such that the sum of the squares of the smallest two is 221.

Write an equation to find the three consecutive positive integers. (let x = the smallest integer)

Solve the equations, and write the three consecutive positive integers.

2006-12-02 14:27:34 · 4 answers · asked by Anonymous in Mathematics

2006-12-02 14:27:22 · 21 answers · asked by Anonymous in Zoology

1. 6x"2+17x+12
2. 12x"2-41n+35

2006-12-02 14:27:14 · 2 answers · asked by guyana_bhai_2003 1 in Mathematics

try to see this optical illusion, your eyes will adjust it's really amazing, here's the link
http://ebaumsworld.com/2006/06/wrong.html
please answer after you see the illusontell me what you think of it

2006-12-02 14:20:58 · 15 answers · asked by Unknown Artist~ 4 in Physics

I hate swollowing pills. My mother always crushed them into tiny sand-sized particles when I was a kid. Does crushing them into smaller size reduce their overall effect. List sources if possible.

2006-12-02 14:18:43 · 9 answers · asked by Stark 2 in Medicine

2006-12-02 14:16:35 · 12 answers · asked by Tami 2 in Earth Sciences & Geology

2006-12-02 14:15:55 · 16 answers · asked by aaronjangel 1 in Astronomy & Space

In the 1500's the Frigates and Galleons were able to cross the Atlantic ocean from either direction. I was lead to believe the masts and sails were positioned so they could travel foreward against the wind. Is this true? Or would they just have to maintain the best heading they could until more favorable wind conditions came?

2006-12-02 14:14:07 · 6 answers · asked by ? 1 in Physics

so my teacher is testing us on these two topics...
need an any length of explaination of energy and how it relates and differs from momentum...
i really need to be tutored on energy...but my teacher doesnt teach us too well

2006-12-02 14:12:30 · 3 answers · asked by EstacioA 1 in Physics

Imagine it. It could be made out space ships that would travel there and eventually combine them all into a giant moon colony.

2006-12-02 14:11:43 · 4 answers · asked by Anonymous in Astronomy & Space

2006-12-02 14:10:13 · 15 answers · asked by lil_slim_305 1 in Mathematics

Hard time understanding this one, please explain.

2006-12-02 14:08:16 · 8 answers · asked by Christ' Soldier 2 in Mathematics