/sci/ - Science & Math » Thread #12927312

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Anonymous Mon 05 Apr 01:26:25 2021 No.12927312 View Reply Original Report

Quoted By: >>12927348 >>12927463 >>12927609 >>12927623 >>12927812 >>12927922 >>12927955 >>12928060 >>12928176 >>12928493 >>12929895

If you pee in a pool, does the water level rise?

Anonymous

Anonymous Mon 05 Apr 2021 01:31:11 No.12927326 Report

Quoted By: >>12927368

Yes. The volume of your piss is about 500 mL. The volume of a swimming pool that's 100m x 10m x 2m is 2,000,000 L. The new volume is 2,000,000.5 L, leading to a depth increase of half a micron, about the width of a strand of hair.

Anonymous

Anonymous Mon 05 Apr 2021 01:33:15 No.12927331 Report

Quoted By: >>12927364 >>12930166

yes, the piss volume was inside you, the volume of your body stays the same (maybe slightly lower, depending if the bladder was so full of liquid that is affected the shape of the abdomen). The volume of the liquid comes out, therefore the total volume increases.
CASE CLOSED!

Anonymous

Anonymous Mon 05 Apr 2021 01:36:43 No.12927348 Report

Quoted By: >>12927359

>>12927312
Depends on whether you're in the pool at the time, or pissing into while standing at the edge.

Anonymous

Anonymous Mon 05 Apr 2021 01:38:13 No.12927359 Report

Quoted By: >>12927472

>>12927348
You are in the pool, with no contact to edges.

Anonymous

Anonymous Mon 05 Apr 2021 01:39:14 No.12927364 Report

Quoted By:

>>12927331
But your body's occupation of water decreases.

Anonymous

Anonymous Mon 05 Apr 2021 01:40:15 No.12927368 Report

Quoted By:

>>12927326
It's a kiddie pool. You happy now? edgylord.

El Cabrón

El Cabrón Mon 05 Apr 2021 02:07:42 No.12927463 Report

Quoted By:

>>12927312
Fake

Anonymous

Anonymous Mon 05 Apr 2021 02:11:50 No.12927472 Report

Quoted By: >>12927631

>>12927359
If your bladder is fully submerged, then I don't think there will be any displacement once the piss is outside the bladder and in the water. That said, you may be slightly more buoyant after emptying your bladder, in which case you may not sink quite as deep, which could lower the water a minute amount.

Anonymous

Anonymous Mon 05 Apr 2021 02:14:55 No.12927481 Report

Quoted By: >>12927493 >>12927544

No, mass within the water stays the same. Saying that it would rise because the volume that was inside is now outside is like saying if half the water was in a giant waterballoon and you popped it the water would rise

Anonymous

Anonymous Mon 05 Apr 2021 02:17:20 No.12927493 Report

Quoted By:

>>12927481
the body is semirigid though, there wouldnt be a 1-to-1 transfer in which the outside area of your body compresses at the same rate as mass leaves your urethra. when your lungs expand and contract your chest expands and contracts as well but not to the same volume because of the rigidity of your ribcage

Anonymous

Anonymous Mon 05 Apr 2021 02:39:07 No.12927544 Report

Quoted By: >>12927575

>>12927481
What if pool is shallow, and your bladder is above water.

Anonymous

Anonymous Mon 05 Apr 2021 02:48:24 No.12927575 Report

Quoted By:

>>12927544
Don't pee in your bathtub, anon.

Anonymous

Anonymous Mon 05 Apr 2021 03:00:58 No.12927609 Report

Quoted By: >>12927619 >>12927644 >>12928038

>>12927312
Even if this thread is resolved I have another
pressing question from your picture:

How the fuck can the people leave the pool?

Anonymous

Anonymous Mon 05 Apr 2021 03:04:10 No.12927619 Report

Quoted By: >>12927644

>>12927609
I was thinking exactly that

Anonymous

Anonymous Mon 05 Apr 2021 03:05:54 No.12927623 Report

Quoted By: >>12927629 >>12927644 >>12927743

>>12927312
>no visible pool entry or exit

are they stuck in the pool now?

Anonymous

Anonymous Mon 05 Apr 2021 03:06:41 No.12927629 Report

Quoted By:

>>12927623
This is footage from The Sims 5.

Anonymous

Anonymous Mon 05 Apr 2021 03:06:47 No.12927631 Report

Quoted By: >>12928158

>>12927472
What if you are lying on a float, bladder high above water. You pee into the pool. What then.

Anonymous

Anonymous Mon 05 Apr 2021 03:11:18 No.12927644 Report

Quoted By: >>12927660 >>12928038

>>12927623
>>12927609
>>12927619

It's fake but you could do a reverse moon pool where you swim down make a loop into an air lock and then you can get in and out.

Anonymous

Anonymous Mon 05 Apr 2021 03:15:48 No.12927660 Report

Quoted By:

>>12927644
>reverse moon pool where you swim down make a loop into an air lock

how about klein bottle reverse moon pool
now I really want to see what one would look like

Anonymous

Anonymous Mon 05 Apr 2021 03:41:16 No.12927743 Report

Quoted By:

>>12927623
helicopter

Anonymous

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Anonymous Mon 05 Apr 2021 03:55:00 No.12927812 Report

Quoted By: >>12927859 >>12928222

>>12927312
no because same displacement

Anonymous

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Anonymous Mon 05 Apr 2021 03:59:01 No.12927824 Report

Quoted By: >>12927833 >>12929789

how do they get out

Anonymous

Anonymous Mon 05 Apr 2021 04:02:08 No.12927833 Report

Quoted By:

>>12927824
they don't. once you're in the pool, you're there forever. it's more of a prison than a pool, really

Anonymous

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Anonymous Mon 05 Apr 2021 04:07:24 No.12927859 Report

Quoted By: >>12927861

>>12927812
Wrong!

Anonymous

Anonymous Mon 05 Apr 2021 04:08:04 No.12927861 Report

Quoted By:

>>12927859
unfathomably based

Anonymous

Anonymous Mon 05 Apr 2021 04:29:14 No.12927922 Report

Quoted By: >>12927937 >>12928064

>>12927312
no, the pee volume is waaaaaaaaaaaaaaaaaay to less compared to the volume of water in the pool, hence the change will be insignificant. and don't pee in pools.

explanation:

V(total)=V(pool)+V(pee) .'.where V(pool)>>>V(pee)

and if V(pool)>>>V(pee), we can eliminate V(pee) as it will be insignificant.

.'. V(total)=V(pool).

Anonymous

Anonymous Mon 05 Apr 2021 04:39:49 No.12927937 Report

Quoted By: >>12927992

>>12927922
What if it was an elephant pissing in the pool?

Anonymous

Anonymous Mon 05 Apr 2021 04:44:02 No.12927954 Report

Quoted By: >>12927992 >>12928402

competitive water polo player and swimmer my entire life. I pee in every single pool i've been in. Also pee in my wetsuit while surfing so my warm pisses swishes around, trapped between my skin and the suit, keeping me eternally warm.

Anonymous

Anonymous Mon 05 Apr 2021 04:44:03 No.12927955 Report

Quoted By:

>>12927312
No because it was already in you so you didn't add anything

Anonymous

Anonymous Mon 05 Apr 2021 05:03:05 No.12927992 Report

Quoted By:

>>12927937
depends on the ratio/proportional difference b/w the volumes.

>>12927954
uhh... ok. cool!

Anonymous

Anonymous Mon 05 Apr 2021 05:22:30 No.12928038 Report

Quoted By:

>>12927609
>>12927644
That sounds feasible for an expensive joint like that. But what of those that couldn't swim or
are thalassophobic?

Anonymous

Anonymous Mon 05 Apr 2021 05:31:08 No.12928060 Report

Quoted By:

>>12927312
No, piss is in the bladder which would be submerged.
The only case where the volume would increase is if piss in the bladder is more pressurized.

Anonymous

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Anonymous Mon 05 Apr 2021 05:31:43 No.12928064 Report

Quoted By:

>>12927922
>will the volume change?
>no the volume change is too small to matter
>but the volume changes

Anonymous

Anonymous Mon 05 Apr 2021 06:00:04 No.12928158 Report

Quoted By:

>>12927631
Then the pool level increases slightly though your reduced mass will push down on the float a bit less, reducing how much displacement it creates. The mass of the piss likely displaces more water than the reduced displacement of the float but I'm not doing the math to prove it.

Anonymous

Anonymous Mon 05 Apr 2021 06:05:18 No.12928176 Report

Quoted By: >>12928337

>>12927312
No.
Let Vp, Vw, Vd, Vu be the measured volume of the pool, the water, the volume displaced by you, and the volume of the urine, respectively. Let ? be the density of the water/urine, mo be your mass, and mu be the mass of the urine.

Before urinating
>? Vd g = (mo + mu) g = (mo + ? Vu) g
>Vd = mo/? + Vu
>Vp = Vw + Vd
>Vp = Vw + Vu + m/?
After urinating
>? Vd g = mo g
>Vd = mo/?
>Vp = Vw + Vd + Vu
>Vp = Vw + mo/? + Vu
Vp(before) = Vp(after)

Urinating into the pool adds volume to the water, but reduces the volume your body displaces by the same amount.

Anonymous

Anonymous Mon 05 Apr 2021 06:17:42 No.12928222 Report

Quoted By: >>12928314 >>12930250

>>12927812
The displacment of your bladder could be exactly the same before and after you pee, since the body is spongy and could exapnd to fill the space left by the released pee. Thus, the question is really how much extra spongy air-space a bladder could sustain without collapsing given a depth of water it is submerged in.

Anonymous

Anonymous Mon 05 Apr 2021 06:44:28 No.12928314 Report

Quoted By:

>>12928222
but more air in the body also means floating more. good point on the water pressure and atmospheric pressure through

Anonymous

Anonymous Mon 05 Apr 2021 06:51:28 No.12928337 Report

Quoted By: >>12928384 >>12930105

>>12928176
Wait..... are you floating in the water or standing? If you are standing on a surface below the water then peeing in the water will increase the volume of the pool, but if you are floating then buoyancy will balance the check and your peeing will not change the level of the water at all.

Anonymous

Anonymous Mon 05 Apr 2021 07:09:39 No.12928384 Report

Quoted By:

>>12928337
Sure, but at that point are you really "in" the pool?

It's like saying you're "in the car" when you've only put your hand through the open window.

Anonymous

Anonymous Mon 05 Apr 2021 07:15:09 No.12928402 Report

Quoted By:

>>12927954
when I went rafting and wore a wetsuit for the first time my dad told m the point of those things is to pee in them to make you warm

Anonymous

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Anonymous Mon 05 Apr 2021 07:53:41 No.12928493 Report

Quoted By:

>>12927312

Anonymous

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Anonymous Mon 05 Apr 2021 14:56:54 No.12929789 Report

Quoted By:

>>12927824
personally
i always made sure they didnt

Anonymous

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Anonymous Mon 05 Apr 2021 15:29:59 No.12929895 Report

Quoted By: >>12930116

>>12927312

Step 1, take an empty can or an empty bottle and fill it with water.

Step 2, fill a sink with water

Step 3, submerge the can or bottle in the sink of water

step 4, squeeze the can or bottle so the original water leaves through the opening and the can/bottle compresses.

step 5, take the squished can/bottle out of the water.

step 6, holy shit the water level rose.

Anonymous

Anonymous Mon 05 Apr 2021 16:18:25 No.12930105 Report

Quoted By:

>>12928337
>increase the volume of the pool
but not necessarily the water level.

Anonymous

Anonymous Mon 05 Apr 2021 16:20:22 No.12930116 Report

Quoted By: >>12930151 >>12930236

>>12929895
for this experiment, the bottle is already in the water, and never leaves water.

Anonymous

Anonymous Mon 05 Apr 2021 16:28:29 No.12930143 Report

Quoted By:

This is by far the most midwit thread I've seen today.

Anonymous

Anonymous Mon 05 Apr 2021 16:32:21 No.12930151 Report

Quoted By:

>>12930116
but you drank before entering the pool so you have to fill the bottle before dunking it in the sink

Anonymous

Anonymous Mon 05 Apr 2021 16:36:35 No.12930166 Report

Quoted By:

>>12927331
Your body's volume doesn't stay the same. It decreases by the volume of the liquid you let go. There are no voids in your lower body.

Anonymous

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Anonymous Mon 05 Apr 2021 16:57:34 No.12930236 Report

Quoted By:

>>12930116

Holup, I gotchu

1 - 3 feet high water

2 - you get in the water and water goes up by 1 ft

3 - you pee in the water and the level stays the same

4 - you get out and the water only goes down by 0.9 ft because you're slightly smaller than when you got in.

Anonymous

Anonymous Mon 05 Apr 2021 16:59:47 No.12930246 Report

Quoted By: >>12930261

The answer is no. Discussion closed.

Anonymous

Anonymous Mon 05 Apr 2021 17:00:19 No.12930250 Report

Quoted By:

>>12928222
that's not how bladders work. the bladder collapses when it's no longer full.

Anonymous

Anonymous Mon 05 Apr 2021 17:01:20 No.12930254 Report

Quoted By:

I always pee in the pool to keep it topped off.

Anonymous

Anonymous Mon 05 Apr 2021 17:03:43 No.12930261 Report

Quoted By:

>>12930246

but the air goes into the bladder

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