Science & Mathematics - 19 August 2007

how long is summer in months(not the vacation,acual summer)?and how about school year?also how much months is each seasons(spring,summer,autumn[fall],winter)

2007-08-19 23:57:57 · 5 answers · asked by Anonymous in Weather

2007-08-19 23:50:59 · 3 answers · asked by pratiklodh1989 1 in Physics

2007-08-19 23:49:58 · 1 answers · asked by Anonymous in Engineering

our teacher gave us an ***. on investigatory projects..with the use of nature products....i'm in 3rd yr. hyskuL..n we wiL deFend it on our science cLub affairs..d' objectives',materials,procedure,,effects..sidE effects..ex. how to make a shampo,lotion,etc. with d use of nature products...pls.. i need it!..thanks!!

2007-08-19 23:47:33 · 2 answers · asked by -nanie32- 1 in Chemistry

specify both the case of cis and trans in[Co(NH3 )4en2]3+where en is ethylene diamine

2007-08-19 23:34:10 · 3 answers · asked by Anonymous in Chemistry

Does it reduce voltage...or current? Could anyone please explain the working of (or meaning of ) voltage,resistor,resistance,current.....

2007-08-19 23:20:49 · 7 answers · asked by Anonymous in Physics

It's so haaaaaaaaaaaaaard!!!!!!!!!!!!!!!!!!!!! I'm doing the review of related literature of our investigatory project. Does anyone know of a study conducted about diff solutions (like salt, sugar, isopropyl alcohol) being irrigated on a plant species? I need to find related topics!!!! It's so hard!!! If you know, please give me the links if there are websites or if not, just give the info like the author, summary of study, and year conducted something like that. Thanks for those who can help!!! I promise your 10 points if you can!!! I need like ummm...1-3 studies.

2007-08-19 23:11:56 · 3 answers · asked by anonymous 4 in Other - Science

x = -x
x/-x = -x/-x
-1 = 1

Obviously this isn't true. What's gone wrong?

2007-08-19 23:08:19 · 15 answers · asked by amer174797 1 in Mathematics

2007-08-19 23:08:00 · 3 answers · asked by tuti k 1 in Chemistry

1. Calculate the integral (dydx) where y = 2 , y = 4-2x and x= 0 , x = 1

2. Calculate the integral (4-2u /v^2)dvdu where v = -2 , v = 4-2u and u= 0 , u = 3

2007-08-19 22:47:58 · 3 answers · asked by nizam_cl 1 in Mathematics

The Capital Of the Chola Kingdom, Gangaikondacholapuram is today called by another name. Please tell me what it is and I will be ever grateful to you!!!!!

2007-08-19 22:46:43 · 2 answers · asked by Anonymous in Geography

i really need your answers for my investigatory...my last sample of my investigatory project...kindly help me if you can..

2007-08-19 22:42:39 · 2 answers · asked by Christopher L 1 in Chemistry

I mean, sometime do you fill that you have already have seen that before or in your dream , what is happening in front of you.

2007-08-19 22:34:08 · 9 answers · asked by Anonymous in Paranormal Phenomena

2007-08-19 22:24:13 · 2 answers · asked by Anonymous in Astronomy & Space

2007-08-19 22:16:53 · 2 answers · asked by Anonymous in Chemistry

1)with the parametric equations find the general equation of the plane.
2)explain why this plane is not parallel to a plane having a normal vector n = (5,-2,-1)

2007-08-19 22:16:49 · 2 answers · asked by chuku 1 in Mathematics

Milk-
Syringe-
Glassware-
Antibiotic solution-
Pharmaceutical apparatus-

2007-08-19 22:14:59 · 1 answers · asked by piggy 1 in Medicine

I have been recommended RediClor, but people in Peru requested Helaxon.
Helaxon more expensive and does not last long, I've been told.
Travelling this Fri,Aug24 am. Need answer asap!
Any recommendations about internet store?
I need to stretch my money and buy best option, but good one too.
Thank you!

2007-08-19 22:00:43 · 2 answers · asked by GrandMamma 2 in Chemistry

2007-08-19 21:38:25 · 7 answers · asked by Anonymous in Earth Sciences & Geology

Every positive integer greater than 1 is equal to a ''product'' of prime numbers.
i.e. 12 = 2.2.3, 35 = 5.7, 30 = 2.3.5 etc...all holds true, but it doesn't make sense if the number chosen is p, a prime unless the number of primes in a ''product'' is allowed to be 1; i.e. 13 = 13 ?, p = p ? but this implies that ''a prime number is a product of one prime''; If so isn't that contrary to the definition of PRODUCT ?
P.S. a product is the result obtained from one or more binary ops. as i remembered. i.e. must exist more than one elements; in this case at least two natural numbers.

2007-08-19 21:35:28 · 11 answers · asked by Anonymous in Mathematics

I need to know how much energy is released in kilojoules per mol (kJ/mol) when a Carbon-Hydroxide (C-HO) bond is formed. In actual fact im calculating how much energy is released in kJ/mol when you combust 1-pentanol. I really need to know this for my chemistry practical report.

This would probably be found in the SI data book.

2007-08-19 21:19:25 · 2 answers · asked by Anonymous in Chemistry

what are example of the use of a ballistic pendulum in a forensic investigation?
what are the best website to get information on ballistic pendulum?
what error might occur during a ballistic pendulum experiment?
what are the physical theory of a ballistic pendulum?

2007-08-19 21:16:16 · 1 answers · asked by yusuke_kousuke 2 in Physics

2007-08-19 21:14:44 · 13 answers · asked by twinkle toes 1 in Zoology

Imagine this. You are in a glass sphere (15x15 feet) that has a glass floor located in the middle of it. This sphere is out in space heading towards an unspecified direction at 102mph. In this sphere on this floor is:


* You
* a flat bed with no sheets
* an automatically climate controlled environment
* a spherically shaped fridge with unlimted food and drink (healthy selection of various cuisines)
* a spherical toilet


NOTHING ELSE. No television or no books. No way to break the glass. No way to end your life!

Can one die of boredom? Would you go crazy? How wacked would this be?

2007-08-19 21:11:34 · 12 answers · asked by Peter N 1 in Astronomy & Space

2007-08-19 21:07:29 · 2 answers · asked by joyce s 1 in Chemistry

2007-08-19 20:54:55 · 12 answers · asked by leeds_army 1 in Zoology

Find the equation of the circle if the circle is tangent to the line x+2y=3 at the point (-1,2) and the center is on the y-axis.

2007-08-19 20:52:03 · 6 answers · asked by trevor 1 in Mathematics

2007-08-19 20:42:37 · 21 answers · asked by ibentmywo0kie 1 in Physics

A bullet is fired into the air with an initial upward velocity of 80 ft. per second from the top of building 96 feet high.The equation that gives the height of the bullet at time t is h=96 + 80t - 16t^2.At what time the bullet be 192 ft in the air?

2007-08-19 20:30:40 · 4 answers · asked by kamote 1 in Mathematics

In movie surfs up, I can see sufers go forward without effort. I wonder why it is so.
If necessary, please use equations.

2007-08-19 20:17:44 · 1 answers · asked by Anonymous in Physics