Normal Coke floating in a tank of water?

[five40]

Everything you need to know about Coke

 

[spacelord]

hmm, I thought all pop sank. We used to drink a bunch of beer while floating in the middle of a lake, and ask whoever was still in the boat to toss us another can when we were empty. well, the beer floats back up if you miss the catch. Pop is gone forever.

 

[Ender]

Hmm that link didn't show me anything I didn't know. Dullard seems to have the best hypothesis so far.

 

[Kyteland]

Either they increased the mass of the can (glued a penny to the bottom, etc) or increased the volume.

You can find out experimentally which it is. Fill a water container to the brim. Add the coke and capture all of the spilled water in a container. Weigh the displaced water. If the water weighs exactly the same as a sinking can of Coke then the volume was increased. If the weights are different then something was added to the can to increase the mass.

If the volume was increased somehow you should be able to tell by examining the can. It would be deformed.

 

[HomeBrewerDude]

what i want to know is how does my thermos know when to keep things hot, and when to keep things cold. !

 

[GoingUp]

couldnt he have froze the can?

 

[JeffCos]

It's aspartame, stupid.

 

[Gibson486]

Originally posted by: HomeBrewerDude
what i want to know is how does my thermos know when to keep things hot, and when to keep things cold. !

It has to do with the vaccum that a thermo has. If I remember right, the vaccum does something with the atoms that cannot be done when exposed to regualr atmosphere.

 

[daveymark]

Originally posted by: MacBaine
Uhh...

It's common knowledge that Diet Coke floats while Coke Classic sinks simply because Diet Coke contains aspartane

It is?

yes, we all learned that in Kindergarten

 

[alexeikgb]

Originally posted by: Ime

Originally posted by: Ender
It's common knowledge that Diet Coke floats while Coke Classic sinks simply because Diet Coke contains aspartane. However, my chemistry teacher showed my class that Classic Coke can also float. He asked us how this could be but nobody could figure it out. Does anyone know how this could happen?

Salt Water?

Salt water would make it float

 

[OffTopic1]

If the water isn't doped with another medium, then it could be that your teacher found a can that happen to be lighter than the others, or he places it carefully against the wall and trapped an air bubble underneath of the can to give it the buoyancy.

 

[dawks]

Originally posted by: five40
Everything you need to know about Coke

Jessie from Phoenix Az writes; "If you put a can of diet Coca Cola and a can of regular Coca Cola in a swimming pool..... the can of regular Coke will sink, but the can of Diet Coke will float!" Thanks for this interesting tidbit Jessie!

One thing slightly not related to this post that I have personally noticed, is that diet coke freezes solid much faster then regular coke.. a 2litre bottle of diet can freeze almost solid in less than an hour, while a regular bottle takes more like 4 hours.. in my freeze (i like my coke COLD)

 

[richardycc]

I bet the floating one is frozen.

 

[HomeBrewerDude]

Originally posted by: Gibson486

Originally posted by: HomeBrewerDude
what i want to know is how does my thermos know when to keep things hot, and when to keep things cold. !

It has to do with the vaccum that a thermo has. If I remember right, the vaccum does something with the atoms that cannot be done when exposed to regualr atmosphere.

your humor detector needs to be recalibrated.

:beer:

 

[Gibson486]

Originally posted by: HomeBrewerDude

Originally posted by: Gibson486

Originally posted by: HomeBrewerDude
what i want to know is how does my thermos know when to keep things hot, and when to keep things cold. !

It has to do with the vaccum that a thermo has. If I remember right, the vaccum does something with the atoms that cannot be done when exposed to regualr atmosphere.

your humor detector needs to be recalibrated.

:beer:

<---sick, tired, hate my job

 

[HomeBrewerDude]

Originally posted by: Gibson486

Originally posted by: HomeBrewerDude

Originally posted by: Gibson486

Originally posted by: HomeBrewerDude
what i want to know is how does my thermos know when to keep things hot, and when to keep things cold. !

It has to do with the vaccum that a thermo has. If I remember right, the vaccum does something with the atoms that cannot be done when exposed to regualr atmosphere.

your humor detector needs to be recalibrated.

:beer:

<---sick, tired, hate my job

all the more reason for a :beer:

 

[dman]

Was one can made in a Foreign Country and the other in the USA? Mexico (for example) uses sugar in their Coke and we use Fructose/Cornsyrup/stuff. I don't know if the density changes with those sweeteners though...

Or perhaps, just maybe, It was not a coke, but a Pepsi can dressed up as a coke can?

 

[TMPadmin]

I can't believe I read this entire thread...

 

[jagec]

Originally posted by: Gibson486
<---sick, tired, hate my job

oh, you hate your job, do you? There's a support group for that, it's called EVERYONE IN THE WORLD and they meet in the bar

j/k.

As for this thread...you guys crack me up...how would shaking the can cause a change in the density of a CONSTANT VOLUME CONTAINER?

 

[Stifko]

Originally posted by: TMPadmin
I can't believe I read this entire thread...

I am so glad that I didn't read it.

 

[KeyserSoze]

Originally posted by: spacelord
hmm, I thought all pop sank. We used to drink a bunch of beer while floating in the middle of a lake, and ask whoever was still in the boat to toss us another can when we were empty. well, the beer floats back up if you miss the catch. Pop is gone forever.

I don't know why, but this made me laugh.





KeyserSoze

 

[ElFenix]

Originally posted by: Gibson486

Originally posted by: joshsquall
Why would it change the density? It's a sealed can. Nothing is changing place, so it's still the same mass in the same volume.

density is only part of it. While density remains the same, it is not the same through out the whole can. There is still some space for the liquid to move, therefore, teh force boyouncy (sp?) does not remain the same at every point, which makes the can tip and create a force greater than that boyouncy. When you shake the can, all teh molocules disperse everywhere (due to the carbonation?), so density at every part of teh can remains more constant and the liquid doe snot subside or move as much to make it over come the force boyouncy(sp?) of the water.

Keep in mind, i am not a scientist, so i could be totally wrong.

ummm... no.

 

[scorp00]

Ever think of those coke cans that are almost exact replicas but the top screws off so you can hide stuff in there? Could it be one of those?