Science & Mathematics - 28 October 2007

Are there any super black holes we know of that are massive enough to cause another big bang type event ?

2007-10-28 08:59:43 · 7 answers · asked by Godzilla Gal 4 in Astronomy & Space

How would you solve cos((5(pie))/6)

2007-10-28 08:57:44 · 1 answers · asked by Johhny Doe 3 in Mathematics

Anak Krakatoa spewed today, Mt. Kelud is still expected to blow, is this ordinary in Indonesia, or unusual, and if so whats going on? Any good sites you can recommend for updates? Any forecasts on time or size of Krakatoa or Kelud or any other eruptions? Thanks for your information, its appreciated.

2007-10-28 08:57:08 · 3 answers · asked by jxt299 7 in Earth Sciences & Geology

how can you decide which is stronger between gravity and electricity. aren't they governed by kqq'/r^2 and Gmm'/r^2.... so which will win is solely determined by the ratio of kqq' to Gmm'. shouldn't the real question be which tends to be larger given typical matter... I mean... electron to electron obviously electricity wins over gravity.
neutron to neutron gravity wins right, since there is no electric force.
what's the weak force anyway?
can anyone pt. me to a link or have a good discussion on the subject?

2007-10-28 08:57:03 · 1 answers · asked by keyahnoo 2 in Physics

A polynomial f(x) with real coefficients and leading coefficient 1 has the given zeros and degree. Express f(x) as a product of linear and quadratic polynomials with real coefficients that are irreducible over R.

seriously i have been trying to work this problem out for like an hour. can someone explain to me how the hell they got this answer from this problem please! any help is greatly appreciated!

zeros are 4 ±3i -2 ±i
degree is 4
answer is (x^2 -8x +25)(x^2 +4x +5)

as far as i got was:
(x+4)(x-4)(x+3i)(x-3i)(x-2)(x+2)(x+i)(x-i)
(x^2 -16)(x^2 +9)(x^2 -4)(x^2 +1)

ok, first of all did i do that right?
and where do you go from there?
i multiplyed them together but i don't see what they did to get (x^2 -8x +25)(x^2 +4x +5)

2007-10-28 08:55:41 · 4 answers · asked by coconut shell :P 1 in Mathematics

2007-10-28 08:53:36 · 2 answers · asked by BARBARA K 1 in Chemistry

completely factor the given expression ( Leave ¶ as ¶ )
¶ is pi

2007-10-28 08:52:02 · 1 answers · asked by jammesun 1 in Mathematics

So how do you explain a change of smell chemical reaction?
Amonia nitrate + sodium hydroxid==> ammonia hydroxide + sodium sulfate

a change of smell is the change that occurs but HOW does it happen? I need to explain it

2007-10-28 08:50:41 · 1 answers · asked by Anonymous in Chemistry

i'm studying in that field but i didn't know exactly what am i studying about....give me some spirit! please anybody....

2007-10-28 08:48:55 · 5 answers · asked by septzz 1 in Engineering

2007-10-28 08:48:53 · 32 answers · asked by Adam H 2 in Biology

Potassiums average atomic mass is 39.10. K40 has a very low natural abundnce.

2007-10-28 08:48:13 · 1 answers · asked by Jackie D 1 in Chemistry

Also why is I(-) a better nucleophile than F(-) in protic solvents?

2007-10-28 08:46:35 · 1 answers · asked by Anonymous in Chemistry

Employer A states the average number of days missed in a year by each staff member is 4.0. Office personnel randomly sampled a portion of their attendance records to determine if this claim was accurate. For the previous year, the following data was obtained from the sample group, regarding absences for that year: 4, 4, 3, 2, 6, 8, 7, 1, 9, 3, 1, and 6. At the .05 level of significance, is there convincing evidence that the number of absences per employee has increased?

2007-10-28 08:45:23 · 2 answers · asked by Jess 3 in Mathematics

2007-10-28 08:44:16 · 4 answers · asked by Cynthia Lemon 2 in Mathematics

seriously i you just took one once every other day instead of like twice a day, you would save alot of water. and i mean you dont get that dirty in one day.

2007-10-28 08:43:34 · 10 answers · asked by kelsey mattioda 3 in Weather

Evaluate:

[ 1510 x 10102 / 516 - C16 / 01002 + 01012 / 01012 ] / 410

With 10 being the base on 15, 2 on 1010, 16 on 5, 16 on c, 2 on 100, 2 on 101, and 10 on 4

2007-10-28 08:41:49 · 2 answers · asked by yanks1mets2000 3 in Mathematics

2007-10-28 08:41:28 · 5 answers · asked by heynikky 1 in Earth Sciences & Geology

2007-10-28 08:41:28 · 4 answers · asked by melstxi055 3 in Mathematics

...if |K| = 42 and |G| = 420, what are the possible orders of H? Thanks to whoever can help me.

2007-10-28 08:41:16 · 1 answers · asked by Randall N 1 in Mathematics

2007-10-28 08:37:52 · 9 answers · asked by me(: 2 in Geography

#2 Find the measure of an angle such that the difference between the measure of the angle and the measure of its complement is 28 degrees.

2007-10-28 08:37:34 · 1 answers · asked by Anonymous in Mathematics

2007-10-28 08:35:46 · 3 answers · asked by javierf1987 1 in Medicine

If this happend , could another super black hole repeat this type of event in the future ?

2007-10-28 08:34:39 · 4 answers · asked by Godzilla Gal 4 in Astronomy & Space

the subscript contains the mass number, right? what about the superscript?

2007-10-28 08:34:37 · 2 answers · asked by thru_irish_eyes105 1 in Chemistry

How is it possible to weigh water when you need a container to put it in to weigh it, wont the container throw off the end value? roflz

2007-10-28 08:30:10 · 2 answers · asked by Anonymous in Chemistry

Does anyone know when the last comet came that could be seen in the US and when the next one is predicted to come?

2007-10-28 08:30:05 · 2 answers · asked by Marium M 2 in Astronomy & Space

Ugh, I'm really horrible at these. Burning through some homework here and I can't for the life of me figure out
(1+cosx)(cscx - cotx) = sinx

I'm not sure how these ones that involve so much multipling, or really what identities to use. if anyone could help explain this to me, I'll surely thank you with a best answer.

Also, is sin^2x/sin^4x = 1/sin^2x ?

2007-10-28 08:30:03 · 2 answers · asked by fane 3 in Mathematics

i think i read about the in time or people magazine

2007-10-28 08:29:19 · 2 answers · asked by gregorysreid1973 1 in Zoology

What are some differences and similarities of alpine tundra and arctic tundra?? Including siol, animals, plants, and climate, ect. Thank you !

2007-10-28 08:29:10 · 2 answers · asked by Katie C 1 in Earth Sciences & Geology

can you find the lateral area of a right triangular prism with a height of 30cm and a right triangular base with a leg of 12cm and the hypotenuse of 13cm

2007-10-28 08:27:00 · 1 answers · asked by Anonymous in Mathematics