Science & Mathematics - 6 August 2007

More precisely, show that, for every n >=2, 1 + 1/2 +....1/n is not an integer.

Thank you for any help.

2007-08-06 11:42:58 · 3 answers · asked by Anabela 1 in Mathematics

I've been working out for the past 4 years and decided to take creatine to aid in building size and strength.

I guess my main concern is the problems that is associated with taking steroids. It increases heart size (because it is a muscle), and have known to cause heart failure amongst other effects.

Now, I do know that Nitric Oxide (NO2) and creatine are not steroids. So my question is, will taking NO2 (such as NO-Xplode) or creatine enlarge the heart? Are there any other concerns I should be worried about? Please list your sources also. Thanks everyone!

I know that NO2 contains caffeine (1 scoop = 8oz drip coffee) and the suggested use calls for 2-3 scoops.

2007-08-06 11:30:08 · 2 answers · asked by Anonymous in Medicine

I have a 9000 BTU portable air conditioner for my room. It has about 115 volts. Does this take up a lot of electricity?

2007-08-06 11:24:22 · 4 answers · asked by misa 1 in Engineering

for instance, could there be planets, etc above earth, or are they just farther out?

2007-08-06 11:24:01 · 11 answers · asked by Anonymous in Astronomy & Space

It was named after the man who figured this out.

2007-08-06 11:20:21 · 4 answers · asked by bre bre 2 in Astronomy & Space

Ok, so I got some answers on my previous question, but I'm still confused.
The complete question I have to answer is as follows:
- Which has greater momentum, a 1 ton care moving at 50km/hr or a 2 ton truck at 25km/hr?
- If the car and truck move in opposite directions what is the car's momentum in regards to the truck and vice versa. Why does the momentum differ from the first case?

I know that momentum = m*v, so I can figure out the first part of the question, but why is my professor stating in his last sentence that the momentum will differ if they're going in opposite directions?

I'm confused....Please help.... ;-)

2007-08-06 11:19:42 · 4 answers · asked by Camilla 2 in Physics

i think humming birds are a summertime bird, so i live in canada, and its the month of august rite now, when should i take down my humming bird feeder?

2007-08-06 11:19:12 · 6 answers · asked by Anonymous in Zoology

besides in star wars lol.

2007-08-06 11:19:03 · 13 answers · asked by Heather 4 in Astronomy & Space

2007-08-06 11:13:45 · 3 answers · asked by Anonymous in Geography

2007-08-06 11:10:08 · 7 answers · asked by fmontes92 2 in Mathematics

If you think that before Big Bang there was nothing in the Universe, no space, no vacuum, just nothing; what exactly is nothing? Before the first particle ever that got created in the Universe what exactly was "nothing"?

2007-08-06 11:10:01 · 13 answers · asked by Anonymous in Astronomy & Space

Initial speed of the tachyon is 2c.

2007-08-06 11:08:06 · 3 answers · asked by Alexander 6 in Physics

in johnny english.bough says the man is talking gibberish.whta is gibberish

2007-08-06 11:07:08 · 6 answers · asked by Anonymous in Mathematics

2007-08-06 10:58:26 · 8 answers · asked by Kathy M 1 in Engineering

2007-08-06 10:56:46 · 7 answers · asked by Heather 4 in Astronomy & Space

I am a 13 year old kid in florida on a mission to save animals. My first mission is to save the Shark. I've been lookin' into Shark adoption, since I've heard it really helps the animal. But, it's been challenging, to find one that is reliable and isn't a rip-off. Any tip's? Any more idea's?

2007-08-06 10:52:15 · 2 answers · asked by Shark 1 in Zoology

A 1 ton car is going 50km/hr in the OPPOSITE direction from a 2 ton truck moving at 25km/hr, what vehicle has the greater momentum and why?

2007-08-06 10:51:31 · 5 answers · asked by Camilla 2 in Physics

have you ever wondered why the color blue has the name "blue"? any specific reason? latin root? any root at all? hmmm..i wonder

2007-08-06 10:45:57 · 7 answers · asked by Olive 1 in Biology

Note - This "theory" is based on the assumption that you travel faster than the speed of light. I KNOW IT'S NOT POSSIBLE. But I was just wondering IF it was possible...

Say you have this super massive telescope. Now, you travel much much faster than the speed of light to a far far planet and you take the telescope with you. When you get to the planet you see the Earth through the telescope. Theoretically wouldn't you be looking at the Earth that was millions of years ago? Since you have raced light to the planet you're at?

I know its crazy, but just a thought I had.

2007-08-06 10:43:42 · 7 answers · asked by Anonymous in Astronomy & Space

Find the least common denominator for each group of rational expressions.


5 over 18x^2y^3 , -3 over 24x^4y^5


9 over k+3 , 3 over k


17 over 3r-21 , 9 over r-7


x over x^2 - 81 , 3x over x^2+18x +81

2007-08-06 10:41:06 · 1 answers · asked by Anonymous in Mathematics

'hope is for the furtue,
and what we see ahead,
hope is a bank of memoris
as on life path we tread,

hope is what you feel inside,
a light inside your heart,
a felling full of happines,
the pause before the start,

hope is for tomorrow and the days that are to come,
hope is in a frienly smile when the day is done,
hope is hangging in there when all the chips are down and hope is what we all need to wipe away a frown and last of all hope is what we all need to live and to keep going, so smile in the the face of fear and be ne with your self regardes of how you fell or what the weher forcast is. Smile Smile. You ony live once so live it to the full !!!!!!!!! S.L.M

2007-08-06 10:37:30 · 7 answers · asked by Anonymous in Earth Sciences & Geology

2007-08-06 10:30:32 · 2 answers · asked by zebbie g 2 in Zoology

Is there anything happening in space this year on that date? I heard someone talking about it.

2007-08-06 10:23:42 · 4 answers · asked by The Gopher 2 in Astronomy & Space

2007-08-06 10:22:59 · 2 answers · asked by booboobear_619 1 in Mathematics

2007-08-06 10:21:32 · 3 answers · asked by booboobear_619 1 in Mathematics

2007-08-06 10:20:41 · 7 answers · asked by rubydoobydoo 3 in Zoology

best step by step gets 10 points

-6 + x^2 - 5x
so how would u arrange it so it would be like
ax^2 + bx+ c??? and not

-c + ax^2 - b
thanks

2007-08-06 10:17:50 · 3 answers · asked by Anonymous in Mathematics

I believe they are 5 billion or so years old (correct me if I'm wrong). That's a long time, but do these galaxies still exist? The reason I ask is because our galaxy still exists, so it would seem that the other local galaxies would have to too. But 5 billion years old is a long time, is it not? Would galaxies have existed before our local ones and ours came to be?

Also, how far away is the furthest dust of our galaxy in terms of light years?

2007-08-06 10:17:34 · 4 answers · asked by Anonymous in Astronomy & Space

2007-08-06 10:14:09 · 8 answers · asked by jollyrancha243 2 in Chemistry

I understood the first problem, but this one is stumping me. Here's the math problem:
In the period of a year, an investor lost twice as much as he gained. If he originally had $10,000 and now has $8000, what amount did he gain and what did he lose?

2007-08-06 10:12:22 · 8 answers · asked by Nerds Rule! 6 in Mathematics