homework help thread

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Icewind

Icewind

Cyber Punk

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the name sez it all.


IT'S NOT CHEATING IT'S GETTING A BETTER ADVANTIGE

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  • Nov 04, 2005

Silverwolf12

Silverwolf12

Ed's love

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I don't cheat, what if the person next to me has the wrong answers?

  • Nov 14, 2005

kumiho

kumiho

every artist was 1st an amateur

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i don't cheat, i'm cheated...i like to do homework at home n if there'r answers i can't then i'll ask my freinds at school...it save more time n i don't need to rush

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llxcharlenexll

llxcharlenexll

Love Me For Me

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id rather ask a friend instead of random people its ur own fault if u get it wrong if ur friend helped u atleast u have company u both got it wrong lol

  • Nov 16, 2005

fireflywishes

Retired Moderator, Linguistics

fireflywishes

Calgon, take me away~!

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^_^' i think what Icewind-san meant was that this is a thread for ppl to post in if they NEED help with homework... (i like your slogan though... teehee!)

i don't see anything wrong with asking for help on homework if you need it. however, if you just copy the homework without even trying to do it yourself, then i say "boo!" lol... ;)

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nightfire

nightfire

Drift King

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I trust my mind to guide me through my homework, most of the time.

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I think I could help some of you with your Math homework. U see, I got a program, that not just give you an answer, but hte whole solution step by step. It's useful in grades 5-9.(It's killing me, because I get it in 10th). Well if U need it, just gimme a word...
P.S. Anyone has a site, where I can place this program ?

Have no fear - bART is here !

  • Nov 20, 2005
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wow a hw help thread in which one1 has asked for help..heaps mad XD

be pessimistic so that youll never be disapointed and will live a happy life.

  • Nov 25, 2005

Ish377

Ish377

Q Genesis

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i cant help cheating ..

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I'll never cheat even if I know I'm failing a subject

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glassheart

glassheart

Heine's love slave

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Almost every post seems not to trust the answers they'll get XD...I, for one, think it's a wonderful idea! I'll help anyone with essays and any language arts ^_^...

SoulScholar

SoulScholar

NAVI-Gator

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Homework help thread eh? The only reason this needs to exist if your teacher/fellow classmates/parents are unqualified. Hmm...I wonder..

Thx to Rebel-Soul-Kaze for the awesome av and sig! <3 always chichiri~
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  • Dec 07, 2005

Icewind

Icewind

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Quote by glassheartAlmost every post seems not to trust the answers they'll get XD...I, for one, think it's a wonderful idea! I'll help anyone with essays and any language arts ^_^...


sorry fore bring this back but i just wanted to say thanks i've ben bizzy and i didnt see you put that ther. hopefuly with help ther can be correct info passed throu hear.

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  • Mar 04, 2006

HB13

HB13

Kaiten Kensai

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Everyone just reply the person's question with "help." Not necessarily give them the answer.

Like maybe tell them if they remember to do this process, or if they know the definition of a certain term that would help them out to finding the right track for the answer.

"The Way of the Warrior is death. This means choosing death whenever there is a choice between live and death. It means nothing more than this. It means to see things through, being resolved."
-Yamamoto Tsunenori, Ha Gakure (Hidden Leaves)

  • Mar 04, 2006
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physics question
what's the total charge of electrons in 1kg of h20?

merged: 03-09-2006 ~ 08:10pm
ok either the question is too tough or everyone here sux in physics~~

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  • Mar 06, 2006

Icewind

Icewind

Cyber Punk

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i'll see what i can turn up. i've asked a cupple people who are in collage.

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  • Mar 17, 2006

CyberDragoon

The Prince of Nothing

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Quote by devil75physics question
what's the total charge of electrons in 1kg of h20?

merged: 03-09-2006 ~ 08:10pm
ok either the question is too tough or everyone here sux in physics~~

I think I know what to do. I could be wrong so check the work.

First we need to figure out hom many atoms of water are in 1 kg of the stuff. The atomic weight of water is roughly 2(1) + 10 = 12. This means that in 1 mole of water it would mass approximately 12 grams. 1 kg / 12 g = 83.333 moles of water. A mole is a number of atoms. One mole is equal to Avogadro's number which is a number of a group of things. This is similar to how a dozen is another name for a group of 12 things. This means that there are an Avogadro's number of atoms in one mole. So 83.333 moles * (6.022 * 10 ^ 23) = 5.019 * 10 ^ 25 atoms of water.

Now we need to find out how many electrons are in each atom. 2(1) + 8 = 10 electrons per atom. So 10 * 5.019 * 10 ^ 25 atoms = 5.019 * 10 ^ 26 electrons in total.

Each electron has a charge of -1.602 * 10 ^ -10 coulombs. So (5.019 * 10 ^ 26) * -1.602 * 10 ^ -10 = -8.04 * 10 ^ 16 C.

This would mean that the electrons in the water would have a total charge of -8.04 * 10 ^ 16 Coulombs. However, this doesn't take into account the positive charge effect of the protons. Theorectically all the electrons have a partner proton that balances out the negative charge and overall the water should have a net charge of zero. I merely calculated the charge that would be there if I only counted the electrons. I also assumed all the water was the normal form of water and not any strange isotopes. Having different isotopes would affect the mass and the number of atoms in the water.

Any questions? Complaints?

And that's my 2 yen (From me a high school student to boot)

  • Mar 17, 2006

Icewind

Icewind

Cyber Punk

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Quote by CyberDragoon

Quote by devil75physics question
what's the total charge of electrons in 1kg of h20?

merged: 03-09-2006 ~ 08:10pm
ok either the question is too tough or everyone here sux in physics~~

I think I know what to do. I could be wrong so check the work.

First we need to figure out hom many atoms of water are in 1 kg of the stuff. The atomic weight of water is roughly 2(1) + 10 = 12. This means that in 1 mole of water it would mass approximately 12 grams. 1 kg / 12 g = 83.333 moles of water. A mole is a number of atoms. One mole is equal to Avogadro's number which is a number of a group of things. This is similar to how a dozen is another name for a group of 12 things. This means that there are an Avogadro's number of atoms in one mole. So 83.333 moles * (6.022 * 10 ^ 23) = 5.019 * 10 ^ 25 atoms of water.

Now we need to find out how many electrons are in each atom. 2(1) + 8 = 10 electrons per atom. So 10 * 5.019 * 10 ^ 25 atoms = 5.019 * 10 ^ 26 electrons in total.

Each electron has a charge of -1.602 * 10 ^ -10 coulombs. So (5.019 * 10 ^ 26) * -1.602 * 10 ^ -10 = -8.04 * 10 ^ 16 C.

This would mean that the electrons in the water would have a total charge of -8.04 * 10 ^ 16 Coulombs. However, this doesn't take into account the positive charge effect of the protons. Theorectically all the electrons have a partner proton that balances out the negative charge and overall the water should have a net charge of zero. I merely calculated the charge that would be there if I only counted the electrons. I also assumed all the water was the normal form of water and not any strange isotopes. Having different isotopes would affect the mass and the number of atoms in the water.

Any questions? Complaints?

And that's my 2 yen (From me a high school student to boot)

thanks dude let's hope this gets the ball rolling.

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  • Mar 17, 2006

HB13

HB13

Kaiten Kensai

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Since when is the atomic weight of oxygen 10; and when do you get "atoms of water?" Oxygen's atomic mass is 16 (15.9994 if the teacher is picky), and molecules = complexes of more than one atom (my professor's dock points on small things like this). Also your Coulomb constant is off (suppose to be 10^-19). But otherwise it looks good. Just use 1.008 & 15.9994 as the atomic weights for H & O respectively (again, if the teacher is specific). Nice effort though http://www.tournament.com/forums/images/smilies/tup.gif

So
H2O Atomic Weight = 2*(1.008) + 15.9994 = 18.0154 g/mol
1kg = 1000g http://www.tournament.com/forums/images/smilies/rpoint.gif 1000 / 18.0154 = 55.5081 moles
55.50806 moles * (6.022 *10^23 molecules/mole) = 3.3427 * 10^25 H2O molecules
3.3427 * 10^25 molecules * (10 electrons/molecule) = 3.3427 * 10^26 total electrons
3.3427 * 10^26 electrons * (1.60217646 * 10^-19 coulombs/electron) = 5.3556 * 10^7 coulombs

Final Answer ~ 5.3556 * 10 ^ 7 coulombs in 1 kg of H2O
Add the "negative" in there if you want, up to you http://www.tournament.com/forums/images/smilies/shrug.gif

"The Way of the Warrior is death. This means choosing death whenever there is a choice between live and death. It means nothing more than this. It means to see things through, being resolved."
-Yamamoto Tsunenori, Ha Gakure (Hidden Leaves)

  • Mar 17, 2006
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i don't. not that i haven't done it before. i did once on a math test. but i failed anyway. the person that "helped" me really didn't help at all.

searching for faith
in the stars of your eyes

  • Mar 17, 2006

CyberDragoon

The Prince of Nothing

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Quote by HB13Since when is the atomic weight of oxygen 10; and when do you get "atoms of water?" Oxygen's atomic mass is 16 (15.9994 if the teacher is picky)

Lolzors you're right. I wasn't paying attention to my periodic table. Silly me. This is what I get when I try to memorize atomic masses. As for the constant I blame poor typing skills as the 9 and the 0 are next to each other. Thanks for the help with this.

  • Mar 17, 2006

animekikyoustormelissa

animekikyoustormelissa

~Most Impossiblites Are Reality

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ive been sick and they taught something new in pre-ab and i have no idea about what it is
heres a problem Q(-1,6) R(-1,-3) what is it then after we figure it out, "we graph it." XO x_x :pacman:

merged: 03-30-2006 ~ 06:32am
i hate pre-ab i hate physics i hate being sick i have 30 assigments to make-up i hate "lasanga" i dont care if i spelled it wrong

merged: 03-30-2006 ~ 06:33am

Quote by animekikyoustormelissa
ive been sick and they taught something new in pre-ab and i have no idea about what it is
heres a problem Q(-1,6) R(-1,-3) what is it then after we figure it out, "we graph it." XO x_x :pacman:

merged: 03-30-2006 ~ 06:32am
i hate pre-ab i hate physics i hate being sick i have 30 assigments to make-up i hate "lasanga" i dont care if i spelled it wrong

[i hate sickness]

merged: 03-30-2006 ~ 06:34am
how do you work this thing

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