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Was I dreaming?

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Was I dreaming or was there a post on here asking people 'Which tank would fill first'? I'm sure there was, but I'm damned if I can find it. I commented too. Most weird!! Read More
mrty Avatar
3m, 2w agoPosted 3 months, 2 weeks ago
Was I dreaming or was there a post on here asking people 'Which tank would fill first'? I'm sure there was, but I'm damned if I can find it. I commented too. Most weird!!
mrty Avatar
3m, 2w agoPosted 3 months, 2 weeks ago
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(18) Jump to unreadPost an answer
Responses/page:
#1
Nah, you weren't dreaming it, can't find it either though.
#2
Saw one on facebook the other day, but cannot find now.

Edited By: Tr1gger on Jan 06, 2017 13:18
[mod][Moderator]#4
Is this it HERE?
#5
https://us-static.z-dn.net/files/d58/f6b55980140dd882e86eb7c7e8613cd5.jpg

Lots of variations of the diagram, some have the pipes between tank(s) blocked as a trick.
#6
I reckon number 3
#7
M1 Abraham for sure.
#8
depends if the water freezes and where
#9
peeej1978
M1 Abraham for sure.
I agree
#10
We did something like this is school some 25+ years ago and something tells me its 4
#11
3 and 4 fill equally first.... I googled for a demo. (_;)
#12
3 will fill slightly before 4, due to friction in the interconnecting pipe requiring a pressure head to fill tank 4.
#13
It's 3 on this post. It's 2 on the other post.
#14
The answer is 'No, I wasn't dreaming'. Thanks. glad I'm not totally insane.
#15
Bobbajob
3 will fill slightly before 4, due to friction in the interconnecting pipe requiring a pressure head to fill tank 4.

Drink to that.
#16
landros1
Bobbajob
3 will fill slightly before 4, due to friction in the interconnecting pipe requiring a pressure head to fill tank 4.

Drink to that.


to fill totally to the brim then number 4 must be the answer, as 3+4 are the same but 4 fills from the top and drains 3 from the bottom forming a siphon. Once started the siphon will pull all the water out of tank 3 until air enters the drain pipe cancelling the vacuum. So 4 will fill to overflowing -the others can't.
#17
Bobbajob
3 will fill slightly before 4, due to friction in the interconnecting pipe requiring a pressure head to fill tank 4.

You aren't factoring in the backpressure from 1 and 2
#18
It was on the test your IQ in the misc section :)
here

Edited By: LillyM on Jan 06, 2017 18:43

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