Science & Mathematics - 29 October 2006

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I have a science question. Look at add details for ?

A commercially available solar cell module puts out 3 voltage and 0.1 amp, measures 5 cm by 8 cm. How large an array is necessary to provide an output of 60 watts?

2006-10-29 01:59:45 · 1 answers · asked by Linda B 1 in Engineering

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crosspollinate???

does anyone know how to crosspollinate rice?? i'm having troubles finding the information...i would be very greatful!!

2006-10-29 01:55:19 · 2 answers · asked by lov3lyrex 1 in Botany

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what components does propylenglicol have in it?

2006-10-29 01:54:58 · 1 answers · asked by Nora W 1 in Engineering

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what other body system works with the Excretory system?

body systems, ex. digestive, rispertory, and circulatory.

2006-10-29 01:51:58 · 5 answers · asked by dawggsrule01 1 in Biology

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How many liters are in a gallon?

2006-10-29 01:49:57 · 10 answers · asked by Anonymous in Mathematics

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Daylight savings?

Ok let me get this straight. If you lived in missouri, would the time be now 8:45 or 9:45

2006-10-29 01:47:03 · 6 answers · asked by April 2 in Earth Sciences & Geology

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How to calculate the limit of this function (Advanced Calculus)?

I want to ask how to calculate this lim

lim (1 - 2/x) ^x when x --> infinity

Thx a lot
(dont use graphing method, I have tried L'Hosiptal but havent figured out)

2006-10-29 01:42:04 · 4 answers · asked by Duy Le 1 in Mathematics

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Fibonacci sequence...(see details)?

in this sequence are ther 2 numbers that the ratio between them will equal PERFECTLY the devine ratio...if so plaese answer

2006-10-29 01:37:50 · 5 answers · asked by norm n 2 in Mathematics

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Could you ever find a rainbow and what would happen if you walked through it?

That question always bothers me

2006-10-29 01:30:46 · 22 answers · asked by don't stop the music ♪ 6 in Weather

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Would you expect Hydrogen Fluoride to conduct electricity?? please explain your answer..?

it's actually 1 of my homework..
and you know??
my chemical is bad..
so, please help me answer this question..
thanks..

2006-10-29 01:30:27 · 6 answers · asked by || tha || 2 in Chemistry

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How many types of cheetahs are there (The Animal)?

I want to know about the animal cheeatah, not cheaters.

2006-10-29 01:30:07 · 5 answers · asked by Anonymous in Zoology

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why do bubbles in soft drink are spherical?

2006-10-29 01:28:10 · 5 answers · asked by ORLANDO C 1 in Physics

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Fairly Basic Integration?

Hi, can anyone help me can't remember how to integrate x/(x+1) and 1/sin^2(x). Thanks.

P.S Obvioulsy with respect to x for anyone who is really pedantic :-)

2006-10-29 01:20:50 · 4 answers · asked by Philip J 2 in Mathematics

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How many types of cheetas are there and what are they?

I just really want to know all of the types of cheetahs.

2006-10-29 01:20:17 · 4 answers · asked by Anonymous in Zoology

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what happens if i stop taking an antidepressant?

i took my last lexapro on wed. and called in a refil to my doctor that same day expecting to get it refilled the next day...the next day i called the pharmacy and it wasnt there. Ok, no big deal i'll try calling later. No refil thurs. so i called the doctor friday and let them know that i was out and i was going to be out for the weekend so that they would make it a priority.....no refil was called in fri. either. Not even a return phone call from my doctor..nurse or anything. So, now i havent taken it in 4 days and i am having sensations through my body that is freaking me out. I am thinking i will be able to get some mon. but who knows. What, if anything will happen if i dont get some more for about 2 days. today is sunday morning and i feel terriable it will be all day today and probably late mon. afternoon before i can get some more!! Will these sensations get worse? what else can happen? I am worried and believe me the dr. office will have me to deal with mon. morning!!!!

2006-10-29 01:18:24 · 9 answers · asked by lisamarie_625 1 in Medicine

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from which site can i find chemical properties of steel?

2006-10-29 01:18:01 · 3 answers · asked by mukul 1 in Chemistry

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whats the use of copper?please tell me at least five usage...thanks?

2006-10-29 01:15:02 · 4 answers · asked by jackson . 2 in Engineering

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Why do ionic substances have high melting points?

i know it has something to do with the charges but please help

2006-10-29 01:11:57 · 7 answers · asked by stace9012003 2 in Chemistry

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2=16^(1/4)?

I'm making a small table in Excel to calculate the increase between 2 levels in different ways. There's one that I can't get solved. I think it's a mathematical problem, but I can't find out what's wrong with it.
It's about the number of steps it takes for something to increase to another level if the increase per step is constant.

Example:
Start = 5,000
End = 25,272
% = Inrease per step = 10% = 0.1

Number of steps = (Start / End) ^ (1 / (1 + %)) <-- (I think the error is in here)
= 5.054 ^ 0.909
= 4.36

In Excel:
A1 = Start: 5,000
B1 = End : 25,272
D1 = % increase per step: 10% = 0.1
C1 = number of steps = (B1/A1)^(1/(1+D1))

The problem is that the answer should be 17.

What should the right formula be to solve the problem?

2006-10-29 01:09:31 · 5 answers · asked by JB 1 in Mathematics

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Constant-Pressure Calorimter?

A 34.32 g stainless steel ball bearing at 117.82°C is placed in a constant-pressure calorimeter containing 120.0 mL of water at 18.44°C. If the specific heat of the ball bearing is 0.474 J/g°C, calculate the final temperature of the water. Assume the calorimeter to have negligible heat capacity.

2006-10-29 01:03:22 · 2 answers · asked by Anonymous in Chemistry

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