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Downhill Rotation Race

Hits: 14720 | Rating: (2.8) | Category: Science | Added by: kitteh9lives
Page: 1 2 Next >   Jump to: Bottom    Last Post
gibb0
Male, 13-17, Europe
 187 Posts
Thursday, July 07, 2011 5:46:19 PM
Water IS correct, if Mr video maker doesn't start changing his experiment half way -_-
And it makes sense, that if the water is moving as a whole because there is no air, it will move faster than if the water is also flowing around the bottle at the same time.
Builds more momentum or something? I haven't got a clue but that feels right to me...

rogue_knight
Male, 40-49, Western US
 869 Posts
Wednesday, July 06, 2011 10:58:16 AM
Apparently ice does unless the water has extra air in the bottle. More exciting nerd info if you vote and follow it on youtube..

CitrusCircus
Female, 13-17, Europe
 182 Posts
Tuesday, July 05, 2011 3:36:03 PM
I guessed water. Forgive my ignorance, but doesn't there have to be a right answer unless they both roll at the same speed? Also doesn't adding air into the liquid filled bottle make the experiment void?

the-x-ray
Male, 30-39, Europe
 89 Posts
Tuesday, July 05, 2011 11:48:04 AM
oh man.. it's just normal that a sealed bottle goes faster than one with a hole with air in it, because the one with air in it it will move it's weight back and forth and is not as straight then, that's all it's about.

meepmaker
Male, 30-39, Southern US
 6716 Posts
Tuesday, July 05, 2011 8:36:13 AM
Water.

RobSwindol
Male, 30-39, Southern US
 2442 Posts
Tuesday, July 05, 2011 4:52:23 AM
"Something's fishy...he's got a southern accent, but he's smart."

Do I presume you've never heard of Samual Clemens?

Samsquanch
Male, 30-39, Canada
 794 Posts
Tuesday, July 05, 2011 3:27:54 AM
Something's fishy...he's got a southern accent, but he's smart.

scottthebum
Male, 18-29, Eastern US
 379 Posts
Tuesday, July 05, 2011 12:33:50 AM
Yes, it should be water that wins (with no air contaminating the bottle) because H20 has a unique characteristic that unlike most other substances in its solid form its molecules space futher apart from each other to make ice less dense than water. So because in equal volumes water should be more dense, the water should win here.

Exhumed
Male, 18-29, Eastern US
 52 Posts
Monday, July 04, 2011 11:21:02 PM
I mean air

Exhumed
Male, 18-29, Eastern US
 52 Posts
Monday, July 04, 2011 11:20:46 PM
@Mrbear if the ice is frozen solid, the air isn't going anywhere if they add ice to the system.

mrbear10
Female, 13-17, Eastern US
 136 Posts
Monday, July 04, 2011 11:11:05 PM
wait, adding air into the one with a liquid and not the one with a solid in it create another varieble, right? So if thats the case how can we be sure of what really is the winner and what caused it if there are 2 things that are different?

Mantistador
Male, 18-29, Western US
 2207 Posts
Monday, July 04, 2011 9:29:48 PM
i turned it off as soon as i realized they were trying to trick me into learning...

Lolboy
Male, 70 & Over, Africa
 797 Posts
Monday, July 04, 2011 5:12:24 PM
Water because it will continue to push it along.

LazyMe484
Male, 18-29, Canada
 10503 Posts
Monday, July 04, 2011 3:34:50 PM
I guessed ice, but I assumed that the water filled one wouldn't be totally full of water.

Still... just a tiny amount of air will do all that. That's cool. Thanks.

Fatninja01
Male, 18-29, Australia
 24534 Posts
Monday, July 04, 2011 3:09:42 PM
Yay, learning is fun. Throwing dodgeballs at people is fun to. WIN!

SmilinSam
Female, 18-29, Eastern US
 3603 Posts
Monday, July 04, 2011 3:03:54 PM
interesting, this is the same reason i always break the seals on my ice tea before i shake them up, to get that turbulent flow and mix up all the good stuff at the bottom

splat13
Male, 30-39, Midwest US
 294 Posts
Monday, July 04, 2011 2:13:33 PM
I went with water thinking the liquid being more dense than ice would have greater inertia. Did not think of rotational flows.

a1butcher
Male, 40-49, Canada
 4783 Posts
Monday, July 04, 2011 1:22:23 PM
I done just got smrter I did.

Spider_sol
Male, 18-29, Midwest US
 1454 Posts
Monday, July 04, 2011 1:17:13 PM
Well, I was really right. I actually knew the water/air idea but didn't know the terminology behind it. I knew 100% liquid would've been fastest because the liquid wouldn't have to rotate (but wouldn't be hindered if some of it, the part near the center and outer edges, 'wanted' to).

He should keep doing the mixture because now making the liquid bottle less and less water will slowly get faster.

CoyoteKing
Male, 18-29, Southern US
 2994 Posts
Monday, July 04, 2011 12:49:40 PM
that was pretty cool. maybe its because i'm an engineer and understand what they are talking about though...

kdubbla
Male, 18-29, Western US
 2 Posts
Monday, July 04, 2011 12:01:17 PM
well i just lost 5 minutes of my life ill never get back

paddy215
Male, 18-29, Europe
 1672 Posts
Monday, July 04, 2011 11:35:18 AM
Aye, the bottle burst "by accident".

addler
Male, 13-17, Midwest US
 782 Posts
Monday, July 04, 2011 11:27:26 AM
"Ok. So they put out a vid trying to be clever, say both options are wrong , then say, well, you might be right. we just dont know because we're stupid as poo and just want ppl to sub to our youtube so we can be efamous."

They put a video that explains why ice happened to be faster when really water should have won the race.

You must have missed their explanation because you're a dumbpoo.

tedgp
Male, 30-39, Europe
 3283 Posts
Monday, July 04, 2011 11:12:19 AM
Ok. So they put out a vid trying to be clever, say both options are wrong , then say, well, you might be right. we just dont know because we're stupid as poo and just want ppl to sub to our youtube so we can be efamous.

Adi_Noor
Male, 18-29, Asia
 191 Posts
Monday, July 04, 2011 11:09:42 AM
In school we were told that the ice floats on water because its density is lower then water, my guess here is water.

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