Does dipping your finger in water effect the weight on a scale? - 2 Truths & Trash - S2E8
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- Опубликовано: 17 ноя 2023
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• 2 Truths & Trash
Here's a list of topics/questions that will be covered in this video:
- Can a Ziploc bag conceal a drawing when placed underwater?
- Do cotton gloves help prevent bubbles from popping?
- Does dipping your finger in a beaker of water affect the reading of the beaker on scale?
- Can you light a match using a 9V battery and a piece of lead?
- Can you use the flowing water from a faucet to point the nozzle?
- If you drop food dye into sugar water, does it mix thoroughly or rise back to the surface?
- Can you chain together nails with a magnet?
- Is the following a real way to make a siphon with a straw?
- If 2 balloons are connected to a tube and the nozzle is opened, which way does the air go? 
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Dude congratulations for two seasons
Thanks so much!
@@JaDroppingSciencenumber c on the last episode was basically a life hack lol💀
@@superbakkas122number c is crazy
Crazy to see how far this series has gotten!
I have been here since the very first episode. Crazy how good this series has become! Thank you
same
Appreciate you so much!
2/3, the buoyancy scale trick got me. Some of these videos definitely don't get the recognition they deserve
I dont know how you find every day physics interactions that keep surprising me consistently
It's easy to just find this stuff online, then it's just wordplay to make one become false. Take the water cups one for example, it's a true concept made false just because he doesn't specify all of the steps in the initial video.
That trash sound effect at the beginning slaps
I think the siphon explanation should have included a mention of selfstarting siphons.
Round 1: Well I got the 1st one correct, knew that cotton gloves would do that, and I have seen a happen before, so I knew it was b.
Round 2: I got that wrong, I knew option a worked, but I thought it was option b, cause I think I saw it not doing that before though maybe it was with salt, but thank you for exampling why the smaller balloon went faster than the larger one.
Round 3: well I knew it wasn’t a, I’ve seen that thing before, unfortunately though I thought it was c, cause my sink works the same, but however, it doesn’t act like that, and I didn’t know about that for option b, so whoops
I've just binge-watched every episode so I can't be in the "episode one gang" but WOW! This is a very high quality and yet simple and understandable series that helps people understand science in a fun way! Congrats, man. This is a great series and you've definitely earned the attention you've been getting. Every video is high quality and yet not over edited or milked and/or selling out!
I wonder when he will do "multiple were fake" or "none were fake"
I think he's done it before, but just once. I forgot when
I wonder when he's going to stop reusing videos round 3 was all reused videos
2:37 I knew this one because of Vsauce lol
I remember having an ap physics test that followed the same idea as the buoyancy one
very excited for season 3, congrats on making it this far!
I love these videos, always a highlight of RUclips for me
These videos are information gold pots
Love what you are doing ❤❤
I learned so much from this lol I wish u would keep doing more
Love this series man! Hope we can get at least 3 more seasons!
Do one with magnets, where you can make another nail magnetic, and where you rapidly flip the poles to undo the state
Only one i got right was the siphon. I really need to brush up on my science lmao
Finally got them all for once.
Love these! Easiest one yet.
Love it and I can’t wait for session 3 😆😆
I think you're a great editor...
appreciate it, definitely trying to get better!
I also like to play with steel washers at work. You can use anything magnetic to make a metal chain. In my case I would use the magnetic end of the screw driver and make a chain of steel washers. Usually it only gets up to maybe 3 or 4 before the magnetic field from the screw driver becomes too weak for me to attach more washers.
Thanks for using my suggestion!
Thanks for submitting it!
Your discord username is plural while this one isn't, which should I have done?
@@JaDroppingScience either is fine
also my handle is singular and my display is plural on both lol
I knew the last one, but the animation was so on point I had no idea how you did it lol.
Hope this series will continue for as long as you are alive!
Just binged all of these after finding your channel yesterday. 10/10 stuff, very fun way to gamify learning some science.
Glad you like them!
crazy to see him with a million subs, im a real og i swear
Vsauce came in clutch for round 2 lol
Eagerly awaiting season 3 of 2&
I can’t believe it is already time for season 3
Can't wait for season 3 c: 💗
i love these videos
Keep up the good work! ❤
Got 2/3, since I reasoned for the first round that he could be using some magic bubble solution that makes the bubbles more durable 😂
Also, back then I thought that the smaller balloon won due to favorable aerodynamics of smaller objects, but after being taught about the properties of gases recently in my general chemistry class, it all makes sense now.
Glycerine added to bubbles makes them more durable. I thought he may have used that in addition to using the glove.
Very fun to watch and guess. Only got the last one correct but didn't even know that explanation could happen.
my fav series on youtube, bring 3rd soon sir
Really cool vid :D thank you
You got me with the water weight experiment. I didn't realize the water is placing an upward (boyancy) on the finger; following Newton's law, that applies the same force down.
this series is very good
Love the vid!!
Lost only at the laat one... uve really weird sinks, ngl 😂
Because I've maintained a home aquarium for over 20 years, I immediately called the two cups/one straw and the sink faucet. 😊
It’s a good day when you post
i swear ive seen these so many times today (theyre probably a bot)
@@speedyplays_ I’m not a bot I just wanted you thank him for making good content
Round 3 I just assumed you had water in the straw. All 3 seemed correct to me. I didn’t realize you meant an empty straw would siphon…
I remember don't stab with a pencil you'll get lead poisoning when in fact it's graphite powder and clay. The led thing was a way to deter the stabbing those bastards.
my brother is just flexing his kitchen sink on us broke mfs
That balloon shit is mind boggling.
Oof. 1/3. Didn't think the bouyant force would increase weight on the 1st.
On the third, I've seen the water siphoning trick before, but didn't know it needed that first step so I thought it was the rare all 3 are true.
Same on the first one. I actually thought the refraction thing was real at first, but then I somehow figured the scale trick looked even more real.
That balloon one has my mind reeling, I would think a balloon that was blown up to a larger size would definitely have more pressure acting on it because the stretchy latex (or whatever it is) would act like almost a spring and store energy.
Oh boy, season 2 finale! I hope it doesnt end on a cliffhanger like last season.
Duuuude so happy rn
Got all 3 right
You have to continue this series
Perfect score let’s gooo
2 of these got me! Always fun to learn this way- your explanations are so clear 😊
You gotta make these harder
with the water siphon straws u could a suck on it when its in one of the glasses to kickstart it
You can’t just skip over the bubbles one like that 💀
I knew the anwser for round 3 becuse of that one vsauce short!
I don't think the faucet staying in position is due to thrust from the water exiting. Could it be a feature of the faucet?
the water pressure pushes the movable part outward, creating friction against the part that holds it back. This friction helps it keep its position.
@@mendelde This may well be some effect from water *pressure*. I'm suggesting that *thrust*, as stated in the video, does not play a role.
There is a design for a siphon that uses momentum to start it
Dude I’m pretty sure at this point you need a plumber
The balloons got me ngl. Seems counter-intuitive at first but makes a lot of sense when you think about it a little more
Next video idea: magnetism induced by magnets in iron is strong, and for some reason [magnet - iron - iron - magnet] combination will be ripped on one of magnet - iron connections and not iron to iron. I've experienced this with spherical magnets and steel balls from ballbearings.
Round 1: I'm pretty sus of B. Even if your hand is supporting the weight of your finger, your finger is still exerted a buoyant force on the water. A and C both feel out there, too, but not unbelievable. I'm gonna go with B. (Aha! That was a good challenge)
Round 2: I'm gonna go with C. While it will settle into an equilibrium eventually, the air flowing between the balloons will have momentum, and thus overshoot equilibrium on the first pass. It's going to oscillate a little before settling to equilibrium. I know that graphite conducts electricity, and that connecting the terminals of a battery creates heat, so I'm pretty sure A is true, and while I'm not sure about B, it feels like it could be true. (Huh, right for the wrong reasons. Go figure)
Round 3: Oof, this is another tricky one. B is true, I learned about it in school. I'm a little sus of A, because I know self-starting siphons exist, but I don't think that's a correct design for one. But C, I'm very sus of, since in my experience with those types of faucet, the thrust they generate isn't much compared to the force of the retraction system. But for some reason, I'm inclined to distrust my instincts this time, so I'm gonna vote for A is fake. (Yay for doubting my instincts! I'm 3 for 3!)
Round 1: Look up Archimedes principle. :)
How does the smaller balloon have higher pressure?
Can anyone explain?😅
Because the rubber of the balloon needs to stretch a lot at the beginning since the balloon needs to stretch a lot more to hold more air. Comparatively, the rubber of the larger balloon needs to stretch far less because of volume tripling when area is doubling.
In the bigger balloon, less rubber needs to stretch, so less rubber exerts force, causing a lower pressure.
It's because rubber doesn't act as a spring. In a rubber band there is almost the same amount of tension if the rubber is stretched 20% or 80% of its maximum stretch.
Pressure is force dividend by surface area. In a small balloon there is almost the same force from the tension but much less surface area so the pressure is bigger
the editing on that straw syphon one really caught me out dang
Round 1. I think A is fake, but it seems like it'd be hard to fake
Round 2. You made a valiant effort, but I think entry A is fake
Bonus round: The balloons will reach the same inflation level... maybe
Round 3. It seems like it'd be easy to fake B, but the siphon in A seems stranger
That's not exactly how a siphon works, but tbh close enough
Viewer: Pls do 🍊
Them: nah *throws in yellow when there is clearly an orange version in the same bin*
Season 3!
Balloons - what matters is the elasticity of each balloon and how much air is in it because that will affect the pressure inside. You cant just say “the smaller balloon” or “the larger balloon” unless you know the balloon’s properties are identical. You rightly point out its the difference of pressures that seek to equalise but the pressures depend on the balloon properties and how much air is initially put into each.
2 truths & 1 trash:
1. The sun is bigger than the moon
2. Your mom is older than you
3. Brita filters
This is the first time that I knew for a fact which one was wrong
woohoo!! all three!!
First time I got all right ahah
Well, I was wrong about the weight of water, but there was some physics I wasn't thinking about.
I misunderstood the balloon question, I thought "smaller" simply meant less inflated. I knew the pressure would equalize.
The syphon was easy though, actually if the straw had two more bends in it you could start it without having to fill it first.
The balloon question was impossible to answer if we don't know if the balloon has been fully inflated before.
4:05 dude, you can do that without a magnet..
Can you explain the cotton glove one pls? So confusing..
Wow, I got 1/3, these are getting difficult
My favourite game to play is to skip the first one and guess the other
C R2 I remember this from a vsauce video
2:02 😂
I'm known for science and I was stumped
Nice
For two truths and trash throw a paper plate upside up and one upside down like a frisbee the upside up one will instantly fall but the upside down will glide.
W Series
Guys I did it! I finally found short form content that is intelligent and interesting
Got everything but made the crucial error in forgetting the syphon has to be full first...
I have gotten every one wrong
There is no negative pressure, it was atmosphere
Hey i got all them right :D (vsauce moment)
3/3 but the first one was really really hard
My guesses (writing in real time):
1. A
2. C
2.1. Larger ballon has higher pressure therefore it will inflate the smaller balloon to ~1.01atm
3. A
I assumed you had started the siphon with the straw siphoning because that totally works as you also demonstrated... That was cheating...
Yay, I had all right
This is awful I i didn't get anything right.
H'm, so this means that the scale reading doesn't increase by the weight of the finger, but by the weight of the displaced water.
3 for 3 babyyy
Round 1: B
Round 2:C
Round 3:A