FiRe
New Member
Posts: 1,800
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Physics
Jun 22, 2003 4:13:40 GMT -5
Post by FiRe on Jun 22, 2003 4:13:40 GMT -5
Hmmm I have absolutely no idea where to post this so I thought here is the best place!! Lol well if anyone is good at science (physics) then how does a heating element in a cup of water, cause the water to heat up? Need to talk about molecules and stuff... Thanks FiRe
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kentris
New Member
Suck my eyeball !!!
Posts: 223
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Physics
Jun 22, 2003 5:05:44 GMT -5
Post by kentris on Jun 22, 2003 5:05:44 GMT -5
erm ok, I was learning this in science, it's more to do with chemistry.
Ok erm... the heat elements vibrate they collide with the water molecules which then causes it to have more frequest collisions therefore more successful collisions...
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Physics
Jun 22, 2003 5:21:00 GMT -5
Post by w0rd on Jun 22, 2003 5:21:00 GMT -5
Sounds like someone needs their homework doing for them..?
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Physics
Jun 22, 2003 5:22:16 GMT -5
Post by Alexander on Jun 22, 2003 5:22:16 GMT -5
yea fire, when i saw this thread i thought u ment psychics , lol
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Physics
Jun 22, 2003 10:24:31 GMT -5
Post by Dave2002003 on Jun 22, 2003 10:24:31 GMT -5
its very basic thermodynamics, the heat element excites the molecules of water, causing them to move quicker, collide more frequently and give off energy in the form of heat. Could get into conservation of energy and mass but its sunday and I just cant be bothered.... Dave
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Physics
Jun 22, 2003 16:56:36 GMT -5
Post by Ohio on Jun 22, 2003 16:56:36 GMT -5
And they all forgot to mention friction.
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Physics
Jun 23, 2003 6:11:04 GMT -5
Post by Freak on Jun 23, 2003 6:11:04 GMT -5
Not much too friction just that it causes heat in the water molecule collisions. ?
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Physics
Jun 23, 2003 8:02:24 GMT -5
Post by Ohio on Jun 23, 2003 8:02:24 GMT -5
Friction from the collisions is what causes heat
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Physics
Jun 23, 2003 17:55:00 GMT -5
Post by Cypher on Jun 23, 2003 17:55:00 GMT -5
might also want to put in stuff about convection currents so that the heated water moves up and cold water replaces it which is then warmed up and mover up making a cycle.
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Physics
Jun 25, 2003 15:38:28 GMT -5
Post by Dave2002003 on Jun 25, 2003 15:38:28 GMT -5
in this case its not friction from the collisions that causes the heat, as the heat is mostly produced from the vibrating molecules, not necessarily from the collisions themselves.
its almost as if this has been drilled into me, word...by...word....
Dave
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Physics
Jun 26, 2003 6:37:00 GMT -5
Post by Ender on Jun 26, 2003 6:37:00 GMT -5
Dave is right (hehe). There's no friction within this equation. It's actually due to elastic collisions which causes the water to heat. The one thing that Dave is wrong about, is that there is a form of collision between the molecules. Just that it's not described as "friction". Since the collision isn't a constant back and forth motion which creates friction between the molecules. In a way, you could consider this "friction" but they keep moving due to convention currents (as Cypher's stated ). I'm sure your homework is past due Fire, but just to clean the slate I suppose. Plus, it was there for the opening to post.... lol
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z00ey
New Member
return is the movement of sense..
Posts: 2,309
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Physics
Jun 27, 2003 4:37:35 GMT -5
Post by z00ey on Jun 27, 2003 4:37:35 GMT -5
btwbr]..aren t physicists those ppl who originally tried to be mathematicians but failed thinking abstractly (they always have to break or throw around things and watch them.. ..measure or time something.. ..but as soon as they are asked to calculate something they can t draw or simulate they call a mathematician) ..lmao ;]
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FiRe
New Member
Posts: 1,800
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Physics
Jun 27, 2003 10:37:10 GMT -5
Post by FiRe on Jun 27, 2003 10:37:10 GMT -5
LOL Thanks guys 4 ur help
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Physics
Jun 28, 2003 19:14:46 GMT -5
Post by Lazer on Jun 28, 2003 19:14:46 GMT -5
/me has no idea
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Physics
Jun 29, 2003 3:37:11 GMT -5
Post by Cypher on Jun 29, 2003 3:37:11 GMT -5
zooey look at engineering ;D to get on an engieer course i want i need to get a B or A in Physics AND maths at A level(one level below a Phd. taken by 17-19 yr olds). cant just be good at one
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