What if we turned on all the taps at once? How to fall (These are just guesses and not actual advice): - Crash into many things on the way down to slow down - Grab anything to cushion the fall - Spread out arms and legs like a skydiver to increase drag How to land: - Relax instead of flail to distribute force of impact evenly - Tuck chin in to protect head - Don't spread out arms - Bend legs slightly to prevent them from locking and land on balls of feet for legs to act as crumple zone. - Fall sideways and use arms to break the fall
He explained way more stuff in 30 mins than my 90 min science class And I actually understand what he’s talking about rather than falling asleep because of boredom in my actual science class
man i wish you were my physics teacher. Mine made us watch discovery channel each class and i literally learned nothing. Probably explained why i almost went on to almost fail engineering physics in college
@@oliverworldwideweb2221 there's a difference between actively engaging with students and being a teacher than puting a video on which literally anyone could do.
When my dad was a teenager he went on a trip with his classmates to a hotel in Greece. They all had walkie-talkies and flushed all toilets in the hotel at the same time. The entire system broke lmao
@Valennntin did you use it first? If not; How much? If in small unused doses (up to 7 sheets, more if lower quality toilet paper) your fine. Over that causes stomach aches. Any amount of used toilet paper is probably just... no.
i love how i can happily watch this full interest even though i claim to have the shortest attention span in the world and constantly struggle to sit through a 15 minute lecture at school
That’s how good Mark Rober is. After 10 minutes in school I get bored bc they are interesting and/or I don’t understand it. With Mark Rober he does a good job of explaining things without being too confusing or condescending
Mark - a key element of public speaking is that you never say, "I'm sorry." The audience won't know anything is wrong until you do something like apologize - just own the stage, own the performance, and even if something is off you just gotta make "the show go on," through it. It will give your performance strength to do so. You never need to say something like, "this is live so anything can go wrong," you never need to make excuses or apologize for something that hasn't even happened yet. Don't preempt yourself for failure. You are a brilliant person with a wonderfully good heart, and you just need to keep up the confidence that you know what you're doing and the audience is already interested in what you have to teach them. Follow these 3 rules: 1) Tell us what you're going to tell us. 2) Tell us. 3) Tell us what you told us. It's that simple and you can totally rock it. On top of the basic structure will be your own natural attitude, your sense of humor, your humility, and you will jive on your own.
Some septic tank still connects to drainage, it just filters the solid out and let water go to the sewers , some septic tank are small so would easily fill up if even the water is stored
You're the kind of personality that makes science ENJOYABLE to students of all ages. You bring excitement to an area that most people describe as "boring" and they have that approach because so may "teachers" simply shove a book at them and tell them to read about it. Science ..is the most hands on subject there is. Good luck in becoming an instructor/teacher....students would absolutely love learning from someone with your energy and concepts .
"Which would you rather let into your house to not mess up those new floors" Me- The elephant "if you said the elephant, you were wrong by a factor of 10!" oh.... >goes on to explain how elephant is actually the right answer.
"What if Everyone Flushed their Toilet at Once" Municipal water pressure would drop everywhere a whole lot. A lot on municipal sewer systems would get a lot of debris cleared out all at once. Municipal water and sewer employees would go into panic mode.
One of my favorite parts about becoming a dad recently is having a reason to buy these science kits and doing them with my son! Can't wait until he's the age we can do them together. I look forward to relearning a lot of the subject matter myself. Pumped!
Gray Simons both are answered, the moon revolves around the earth at the same time the earth revolves. The moon is always “out”, and we only see one side of the moon. When the sun is no longer showing, the moon now reflects more of the suns light back to the earth, and shines brighter, with a darker background, making it more visible.
@@yams5966 Nevermind it is because stars do glow during the day, but we can't see them because of the glare of sunlight. When the sun is up, the blue color in sunlight gets scattered all over the atmosphere, turning the sky the familiar bright blue color. But how does that not apply to the moon?
Too bad there aren't enough teachers like you, I would understand so much more if I would have had teachers like you. Thanks Mark keep up the amazing work!
I would give this man any 5th grade class in the world. When you're learning, and having fun it's full on 5th grade. My 5th grade teacher had us building balsa wood gliders and para balloons.....we had sharp scissors, sharp knives, and created amazing things. I went through three years of math in the 5th grade because we were hands on with proven designs. We got to spend more time in the field than any other class in my school..... I got so lucky by being in that teacher's space.
Same Every single day Slide after slide Sometimes a little film at the end of the semester But our teacher is rlly friendly and chill so it's OK I guess
Ya. My physics teacher was grade 'A' (launched a 5 pound weight at the back of the class to demonstrate tangents 🤣😂), but I do understand. I had an old drunk for my calculus teacher, the reason I didn't become an engineer: I didn't realize until years later how a single bad teacher can destroy you self confidence.
The pressure vs force is also how needles work with so little effort. Well, that and that and they're often coated with some sort of friction reducing substance (anything from a thin titanium coat to a silicone based lubricant (though I'm not sure if the silicone lubricant is used for needles designed for human injection use)). The end result is that a needle will break skin with even a tiny amount of force applied (I draw blood for a living, and it still amazes me just how little effort/force is required to insert a needle). Like, the amount of force I use would probably not even break skin with a normal kitchen knife (though I wouldn't try it, as a sharp enough knife would likely cut, like a high quality single use scalpel blade absolutely would)
"How do you survive a freefall from the sky without a parachute?" While you're in the air, for the first few minutes you will be unconscious from hypoxia, but when you regain consciousness, go spread eagle like a flying squirrel to limit the terminal velocity by creating more air resistance. When you are close to the ground, brace and do a few somersaults on the ground to spread the impact force evenly, preferably on a softer ground where the impact force is already spread out. If possible, trees or glass ceilings may help slow down the fall but are risky due to branches or glass shards impaling the vital organs. The folks at The Infographics Show do a lot of videos on these so you might want to check them out.
@@gili2257 You forgot to mention one really important detail: light bends (or "refracts") when it either passes from one medium to another (such as air to water, water to air, air to glass, etc.) or the density of the medium changes. So: 1. Hot pavement heats up the air above it. 2. Hot air is less dense than cold air, so it floats up and mixes with colder air on the way up. 3. Light passing through that mixture of varying temperatures and densities refracts in weird ways and causes that wavey heat haze above the pavement.
Hey, I was spinning Easter eggs with my dad, and I was wondering why an egg will spin onto it’s top while you start spinning it on it’s side. I noticed that as I spun the egg tilted closer to it’s bottom (or top) it would begin to spin and balance on the bottom (or top if it was tilted toward the top as I spun it). This is interesting to me because usually as you spin something centrifugal force throws things outward. Why would an egg pull its top or bottom inward when you spin it on its side?
I like how you throw everything lol this has actually helped me understand some things I missed in my engineering classes because I didn’t understand it!
The cartoon "Aaahh!!! Real Monsters" had an episode called "The Great Wave". The idea behind the episode is that every year, during a commercial break at the Super Bowl, all viewers at home go to the toilet and flush at the same time, causing the titular Great Wave. Apparently the monsters (who live in the sewers) host an annual surfing competition, taking advantage of this wave.
There is also an example in England way back when there was only cable TV, when there was a popular show on, then during comercial breaks, everyone would flush their toilets.
Jokes aside, I know that in the UK the utilities companies have to prepare for the sudden demand on water at halftime during major soccer games, as everyone flushes the toilet, as well as the power draw for everyone switching on their electric kettles.
thanks mark, for showing that schools can incorporate more interactive and engaging learning. Rather than giving students a thick text book, a load of assignments, and expect them to learn efficiently and last in their heads.
You would be the teacher that kids love, learn, & remember....More educators should teach this way. It would make school & learning not only way more fun but beneficial for all....
4:10 ish) wait, what? You asked which I _would_ let into the house, my answer was elephant but then you say elephant is the wrong answer bc the heals would do more damage...I thought we _didnt_ want damage?
Excellent teacher. Had I had this guy as my science/physics teacher in high school, I would have chosen a better major in university than I did. Such a unique guy.
Full disclaimer; I'm not a scientist, teacher, or anything like that and this is just an educated guess buuuuuut I'm gonna go with a *yes*. That large mass means a lot of inertia. It will take a decent amount of pushing to get it moving, but theoretically if you could get enough traction and force then yes you could move it with your bare hands. Speaking of traction; for every action there's an equal and opposite reaction. So the more you push on it; the more it "pushes" back on you. So given the large amount of inertia it has, you would likely need a wall to push off of; or some means of not just pushing yourself away from the train. The one thing helping you however is that thanks to the Maglev hovering above the track without physically touching anything; it has a VERY low amount of friction you would need to overcome. Force = Mass X Acceleration. A train has a lot of mass, and you as a person could only impart a relatively small amount of force. As a result assuming you generated enough force to move it; you likely wouldn't cause it to accelerate very quickly. So I would guess "yes" you could move it with your bare hands but you would need a lot of traction, a lot of force, and it probably wouldn't accelerate very quickly. Or you could get a large group of people to help, but I think that goes against the spirit of the question. But like I said; I'm no scientist and would love for someone to shed some light on if I'm close or way off😂.
I can’t find where to post the answers for the question, so I’ll just post here. When every part of your parachute has failed, you want to look for two things in particular, snow and trees. Either of these will help lessen the fall, but you will still be injured, now way around it. In the case that you see either of these options, follow these steps: 1. Tilt your feet down when you get close to the grounds, and essentially pencil dive. This will injure your legs, but they will absorb some force also. 2. Put your hands behind your neck in order to protect your neck from injury. 3. Brace for impact, and upon hitting the ground, roll forward to try and disperse your force. 4. Stay awake from the shock until medical help arrives. Anyways, that’s my short answer! Hope you end up seeing this!
Hi! I am Homeschool and I do video classes online and they’re very boring just to sit and watch for 50 minutes. I learned so much with this little video and I love how you’re hands-on and explain it very deeply you should really consider doing science classes for homeschoolers or just online classes.
Few questions (some unrelated): What does mark look like without a hat? How does denser water effect the result? How does lighter water affect the result? Why are water towers higher in the air if the depth of the water matters rather then height of which the pool of water is? What about water do we need to live? Is it possible that all the particles, cells, etc could pass through a table’s particles if we hit it, making your hand go fully through?
Few answers, denser water will increase the pressure as density is defined as mass/unit volume. So if you have more mass (denser) over the same volume of water, the force will be greater. The opposite can be said for lighter water. The depth of water RELATIVE to the point at which the water is released is what is important. If you think of the experiment Mark did with the water bottle, but now the bottle is a hill and the holes are people's houses. The person at the bottom of the hill will have more pressure because the relative height or depth of water is greater. That's why water towers are made high so you have good pressure.
How to land: First spread hand and legs to increase SA and therefore air resistance Second, when u hit land tuck ur chin and use 1 of these falling techniques from taekwondo: tuck chin and roll forward Tuck chin smack forearms against the ground and roll back backwards These techniques will dissipate the energy over a longer period of time and while u will have broken bones, with ur chin tucked in ur head and neck should be protected
![이찬원 2nd Mini Album [bright;燦] Highlight Medley](http://i.ytimg.com/vi/8T-EpMCBjgE/mqdefault.jpg)
Thanks for coming to class!! I WILL DO ONE FINAL CLASS NEXT WEEK, MAY 6TH!
What if we turned on all the taps at once?
How to fall (These are just guesses and not actual advice):
- Crash into many things on the way down to slow down
- Grab anything to cushion the fall
- Spread out arms and legs like a skydiver to increase drag
How to land:
- Relax instead of flail to distribute force of impact evenly
- Tuck chin in to protect head
- Don't spread out arms
- Bend legs slightly to prevent them from locking and land on balls of feet for legs to act as crumple zone.
- Fall sideways and use arms to break the fall
Second, wow, so epic
Thanks for making it 😊
.
Ok
When the only online lecture you attend is Mark Rober's.
Kamil Kamx HONESTLY BRO
So true
666th like
When your comment is more liked than Mark Rober’s.
True that
I love how he drank water to prove that he had no extra holes in him
.
Reminded me of Tom and Jerry.
The classic episodes tho
The opposite of The Mask. "Did you miss?" (drinks a glass of OJ) (OJ pours out of dozens of bullet holes) "I guess not!".
Yessss Tom and Jerry was my childhood 😂
Omg yes i thougt i was the only one who remembered that episode from tom and jerry
Tom and Jerry is epic
I would fine staying at school for 8 hours if the teacher was Mark Rober
Jevan.M 6A 19 Same.
Pretty much everyone would lol
Same
same
I would stay for 18
He explained way more stuff in 30 mins than my 90 min science class
And I actually understand what he’s talking about rather than falling asleep because of boredom in my actual science class
Yes teachers should be taking advise from him
Yes exactly
More than the 2 years of MY science class
And my whole 10 years of school 😂😂😂😂
You are spitting out facts
SCIENCE CLASS #7 ALTERNATE IDEA- What if Everyone Subbed to Mark Rober at Once?
He would get hella bitches
Daniel Ho KRplus will explode
A lot of radiation would be released from the devices
Willie Bravo thats not how it works but ok lmao
youtube would crash
16:40
Mark: *see these little pistons?*
Me: *confused at where the pistons are because I’ve only ever seen pistons in Minecraft*
Lmfao
yeah me too!
Same
Must be a texture pack...
@@thederpydude2088 nah dude, it's a mod... se they arecylinders? Probably a cursed minecraft mod
I love these lectures, I’m 26 and not in high school or college but the way he teaches makes you want to listen.
9:36 imagine hearing this out of context...
Psychopaths...
Omg lmao
what the f-
*"everyone go for that guy!"*
Bruuuuhhhhhhh
This dude is answering all the questions no one asked but needed to be answered
Wut
Lol exactly what I thought
I honestly did wonder what the heck would happen in all toilets flushed at the same time
Micheal: Finally! A worthy opponent. Our battle will be legendary!
Or will it???
How Dare you call him "dude"!
Next time I see a lady with heels on and she wants to come into my house I'll be like nah I'm fine ima just let in the neighborhood elephant in.
😂
Great
Elephant one brah
👨🏾🔬🤧😇🤩👻😼
what if you see a dude with heels on
man i wish you were my physics teacher. Mine made us watch discovery channel each class and i literally learned nothing. Probably explained why i almost went on to almost fail engineering physics in college
Fr dude
𝐂𝐥𝐢𝐜𝐤 𝐇𝐞𝐫𝐞 ➜ livegirls19. com
》》 𝙊𝙣𝙡𝙮 𝘼𝙙𝙪𝙡𝙩 《《
在整個人類歷史上，強者，富人和具有狡猾特質的人捕食部落，氏族，城鎮，城市和鄉村中的弱者，無`'守和貧窮成員。然而，人類的生存意願迫使那些被拒絕，被剝奪或摧毀的基本需求的人們找到了一種生活方式，並繼續將其DNA融入不斷發展的人類社會。
說到食物，不要以為那些被拒絕的人只吃垃圾。相反，他們學會了在被忽視的肉類和蔬菜中尋找營養。他們學會了清潔，切塊，調味和慢燉慢燉的野菜和肉類，在食品市場上被忽略的部分家用蔬菜和肉類，並且學會了使用芳香的木煙（如山核桃，山核桃和豆科灌木
來調味食物煮的時候%^%^ 1618745719
@@gerrysapalaran873 ew
You almost failed because you did not pay attention
@@oliverworldwideweb2221 there's a difference between actively engaging with students and being a teacher than puting a video on which literally anyone could do.
When my dad was a teenager he went on a trip with his classmates to a hotel in Greece. They all had walkie-talkies and flushed all toilets in the hotel at the same time. The entire system broke lmao
I have been to greece. Where i was we had to throw our toilet paper in the trash can
@@sql64 of course! The plumbing system in most villages and cities are very old and very bad
Lol
@@sql64 What do I do, if I ate some toilet paper?
@Valennntin did you use it first? If not; How much? If in small unused doses (up to 7 sheets, more if lower quality toilet paper) your fine. Over that causes stomach aches. Any amount of used toilet paper is probably just... no.
You're my freaking role model dude. Thank you for still providing content during quarantine.
LEGO MAN
@NeOnPSP he has more than that
@NeOnPSP oh i didn't know you were talking about him
Same
Same
i love how i can happily watch this full interest even though i claim to have the shortest attention span in the world and constantly struggle to sit through a 15 minute lecture at school
That’s how good Mark Rober is. After 10 minutes in school I get bored bc they are interesting and/or I don’t understand it. With Mark Rober he does a good job of explaining things without being too confusing or condescending
"If you jump out of a parachute without a parachute. " -Mark Rober
Mark - a key element of public speaking is that you never say, "I'm sorry." The audience won't know anything is wrong until you do something like apologize - just own the stage, own the performance, and even if something is off you just gotta make "the show go on," through it. It will give your performance strength to do so. You never need to say something like, "this is live so anything can go wrong," you never need to make excuses or apologize for something that hasn't even happened yet. Don't preempt yourself for failure. You are a brilliant person with a wonderfully good heart, and you just need to keep up the confidence that you know what you're doing and the audience is already interested in what you have to teach them.
Follow these 3 rules:
1) Tell us what you're going to tell us.
2) Tell us.
3) Tell us what you told us.
It's that simple and you can totally rock it. On top of the basic structure will be your own natural attitude, your sense of humor, your humility, and you will jive on your own.
I only liked this because I thought it took a lot of time
if everyone in my town flushed their toilets at once nothing would happen to the town because we dont have sewers we have septic tanks
Same but we live in a village
Some septic tank still connects to drainage,
it just filters the solid out and let water go to the sewers
, some septic tank are small so would easily fill up if even the water is stored
Not to mention the 2.0 billion people who don't even have flushable toilets.
Where does your water come from?
@@apefromthekitchen I assume from the water system and pipe...
You're the kind of personality that makes science ENJOYABLE to students of all ages.
You bring excitement to an area that most people describe as "boring" and they have that
approach because so may "teachers" simply shove a book at them and tell them to read about it.
Science ..is the most hands on subject there is. Good luck in becoming an instructor/teacher....students
would absolutely love learning from someone with your energy and concepts .
Is it bad that I’m an adult and I’m genuinely learning here?! Great stuff mark, love your channel 👏🏼👏🏼👏🏼
The only problem is not learning new things as you get older. Great to see that you're still learning new things
"Which would you rather let into your house to not mess up those new floors"
Me- The elephant
"if you said the elephant, you were wrong by a factor of 10!"
oh....
>goes on to explain how elephant is actually the right answer.
I know LOL. I was like WAIT. And then 2 x 12 becomes 12 with the nails.
Nooooo... did you even watch the video
The elephant was wrong 🤣
@@amberrose7844 no?
@@eight216 yeah. He went on to explain how the high heel would cause more damage because there is less area. Meaning there is more pressure.
When you hear that intro music, you know its gonna be good.
My pee is brown btw
@@jingyulin2000 You should get your liver checked out or smth
Kevin Luo ur weird
Harry Tan there trying to help you
Well that's odd
26 yrs ago, never did ever think of attending a physics class again. BUT dude made it look fun.
"What if Everyone Flushed their Toilet at Once"
Municipal water pressure would drop everywhere a whole lot.
A lot on municipal sewer systems would get a lot of debris cleared out all at once.
Municipal water and sewer employees would go into panic mode.
Well now it sound boring I would rather take his classes
UnU
Sorry
Not in a rude way
Idk why I’m still heree
*_Alright everyone 3:30pm EST on Saturday we all flush our toilets_*
Rubber duck I will set my alarm
It’s almost time
How
It’s wednesday
This will end badly
We gonna have to put a pause on this experiment, after taco Tuesday my toilet is currently in no flushable condition.
This comment is underrated😂
Taco bell?
I was kinda hoping for a demonstration of all the toilets flushing...
Same here
Lol
Same lol
take your time with these dude it doesn't madder how many vids your making this is the most vids i ever have seen out of you already
Mark as teacher: “let’s look at this” *throws around *
And I love it when he drinks water to prove there’s no holes in him rofl ❤️
somebody's got a little crush on mark rober
Objection! The water got in through a hole.
Hate to break it to you -
He’s married 😂
sounds like something tom would do
Wowww got a notification, came back to see the comments and….
Are you guys a bunch of middle schoolers or something? Get off the internet 🙄️
I love how he always has a practical example to explain concepts, so even young kids can grasp the ideas.
One of my favorite parts about becoming a dad recently is having a reason to buy these science kits and doing them with my son! Can't wait until he's the age we can do them together. I look forward to relearning a lot of the subject matter myself. Pumped!
Great job Mark! Thank you for putting on these classes!
I have some Ideas for a new science class:
1. Why does the moon appear in the daytime?
2. How much does the Earth weigh?
Gray Simons both are answered, the moon revolves around the earth at the same time the earth revolves. The moon is always “out”, and we only see one side of the moon. When the sun is no longer showing, the moon now reflects more of the suns light back to the earth, and shines brighter, with a darker background, making it more visible.
@@yams5966 Then how come we can't see stars during the day?Hmmm...
@@yams5966 Nevermind it is because stars do glow during the day, but we can't see them because of the glare of sunlight. When the sun is up, the blue color in sunlight gets scattered all over the atmosphere, turning the sky the familiar bright blue color. But how does that not apply to the moon?
@@garfield8838 no atsomophere to scatter light
@@crypto.7562 Earth has an atmosphere
Too bad there aren't enough teachers like you, I would understand so much more if I would have had teachers like you. Thanks Mark keep up the amazing work!
I would give this man any 5th grade class in the world.
When you're learning, and having fun it's full on 5th grade.
My 5th grade teacher had us building balsa wood gliders and para balloons.....we had sharp scissors, sharp knives, and created amazing things. I went through three years of math in the 5th grade because we were hands on with proven designs.
We got to spend more time in the field than any other class in my school..... I got so lucky by being in that teacher's space.
The amount of times you said 5th grade are astronomical
*This dude is better at explaining than all my teachers, combined*
Say something new 😂😂😂
Uuuuuuuup
..............
.......
.......
Wish my Physics teacher was more like this guy and didn't just make us watch PowerPoint slides
Same but education is more important then moaning
strange gamer wrong.
Same
Every single day
Slide after slide
Sometimes a little film at the end of the semester
But our teacher is rlly friendly and chill so it's OK I guess
Ya. My physics teacher was grade 'A' (launched a 5 pound weight at the back of the class to demonstrate tangents 🤣😂), but I do understand. I had an old drunk for my calculus teacher, the reason I didn't become an engineer: I didn't realize until years later how a single bad teacher can destroy you self confidence.
me: can i get hit with a sledgehammer?
mom: no
Me: but it's physics
mom: WUT
mom: OK fine son just get onto a bed of nails and put a cinder block on your chest, then I can hit you
This is the dumbest comment I’ve ever read definitely some kid under 17
this is the dumbest reply to a coment I've ever read definitely some kid under 10
Icy Fire I’m 24 lmfao, moron
MrApp Bee what’s a 24 year old learning about pressureXD
"With these high heels on maybe its joe exotic"
Why would you say something so controversial but so brave
The pressure vs force is also how needles work with so little effort. Well, that and that and they're often coated with some sort of friction reducing substance (anything from a thin titanium coat to a silicone based lubricant (though I'm not sure if the silicone lubricant is used for needles designed for human injection use)). The end result is that a needle will break skin with even a tiny amount of force applied (I draw blood for a living, and it still amazes me just how little effort/force is required to insert a needle). Like, the amount of force I use would probably not even break skin with a normal kitchen knife (though I wouldn't try it, as a sharp enough knife would likely cut, like a high quality single use scalpel blade absolutely would)
I changed this comment my so you don't know what they liked
Larsboy72. LOL
*F*
@@NoodleSoooop F
@@edwardlionheart5611 F
F
Imagine going to school for the first time again and hearing WELCOME TO SCIENCE CLASS
I'd run
poפ ʇᴉuɯɐp loooool
I’ll actually play attention because my teachers make everything sound boring and hard to remember
Yesss
I’m literally watching this a little more than a year after and it still helps me!
These 30 minutes taught me more about pressure and surface area. Than a year in AP physics did.
Mark: I’m going to give you a challenge for the week...
Me: Oh God no, HOMEWORK!
"How do you survive a freefall from the sky without a parachute?"
While you're in the air, for the first few minutes you will be unconscious from hypoxia, but when you regain consciousness, go spread eagle like a flying squirrel to limit the terminal velocity by creating more air resistance. When you are close to the ground, brace and do a few somersaults on the ground to spread the impact force evenly, preferably on a softer ground where the impact force is already spread out. If possible, trees or glass ceilings may help slow down the fall but are risky due to branches or glass shards impaling the vital organs. The folks at The Infographics Show do a lot of videos on these so you might want to check them out.
Best teacher ever! You really helped me get a A+ (when I wasn't away from home)
Tomorrow's someone's birthday. Dropping a video would be a treat for us, even for the celebration..
Love you Mark. Happy birthday in advance.
Man, this guy is awesome!
He made a video, he found the science behind such a random and weird question
Are there any experiments that you could show us that include voltage, current, and resistance?
Beau Drake Ooh, yes please
Electrical Engineer here, and would love to see something like that too
I think it would be a cool idea. It's also the topic I am learning in my high school physics class.
This is the only class i am still excited about! Ive never even taken a physics class before but man, you make me really want to learn it.
The amount of effort put into this is literally making me so grateful theres someone in the world like yoi
I was a minute late...
I WAS A MINUTE LATE!!!
😂
maddie g I subbed just for fun 👍🏻
F
Same bro (._.) ( l: ) ( .-. ) ( :l ) (._.)
I was 10 minutes late...
I'm an hour late
Here is a question: Why does pavement on a hot day make waves? Would love to see this incorporated into a class or video.
The hot ground heats the air above it and hot air tends to rise since it's less denser than cold air, this is seen as heat waves
@@gili2257 You forgot to mention one really important detail: light bends (or "refracts") when it either passes from one medium to another (such as air to water, water to air, air to glass, etc.) or the density of the medium changes. So:
1. Hot pavement heats up the air above it.
2. Hot air is less dense than cold air, so it floats up and mixes with colder air on the way up.
3. Light passing through that mixture of varying temperatures and densities refracts in weird ways and causes that wavey heat haze above the pavement.
Thanks 👍
Thoroughly enjoyed this. Just came across your channel and have been extremely satisfied. Keep on bringing this content.
Dude is AMAZING!! Makes Science extremely exciting
5:54 as you know *_corona virus_*
KRplus : *youre not supposed to say that*
More like 0:54
Ronniedafox more like 0:52 smh
KRplus is kinda like China
Hey, I was spinning Easter eggs with my dad, and I was wondering why an egg will spin onto it’s top while you start spinning it on it’s side. I noticed that as I spun the egg tilted closer to it’s bottom (or top) it would begin to spin and balance on the bottom (or top if it was tilted toward the top as I spun it). This is interesting to me because usually as you spin something centrifugal force throws things outward. Why would an egg pull its top or bottom inward when you spin it on its side?
@@Productimothy egg-celent egg-splanation
Hey Mark, How’s the “bettermicrowave” project going? I am still really excited till this day.
I like how you throw everything lol this has actually helped me understand some things I missed in my engineering classes because I didn’t understand it!
The cartoon "Aaahh!!! Real Monsters" had an episode called "The Great Wave". The idea behind the episode is that every year, during a commercial break at the Super Bowl, all viewers at home go to the toilet and flush at the same time, causing the titular Great Wave. Apparently the monsters (who live in the sewers) host an annual surfing competition, taking advantage of this wave.
There's "flushed away" too
There is also an example in England way back when there was only cable TV, when there was a popular show on, then during comercial breaks, everyone would flush their toilets.
Wow... the nostalgia is real!!
Jokes aside, I know that in the UK the utilities companies have to prepare for the sudden demand on water at halftime during major soccer games, as everyone flushes the toilet, as well as the power draw for everyone switching on their electric kettles.
What would happen?
Answer: PHYSICS!!!
thanks mark, for showing that schools can incorporate more interactive and engaging learning. Rather than giving students a thick text book, a load of assignments, and expect them to learn efficiently and last in their heads.
You would be the teacher that kids love, learn, & remember....More educators should teach this way. It would make school & learning not only way more fun but beneficial for all....
Mark, you make a great physics teacher. Thank you for these live streams.
4:10 ish) wait, what? You asked which I _would_ let into the house, my answer was elephant but then you say elephant is the wrong answer bc the heals would do more damage...I thought we _didnt_ want damage?
Lady D elephant is the wrong answer for me because I want ladies in my house
He said it by mistake
@@BamrockO oop
Exactly what I was thinking, I bet he just misspoke
he's a bit stressed out, even in the kahoot answers it was mentioned a lot bad and he said a little bad, it was by mistake that's all
Everyone be calling each other nerds as insults
But the nerd over here being the coolest guy now
Excellent teacher. Had I had this guy as my science/physics teacher in high school, I would have chosen a better major in university than I did. Such a unique guy.
Q : WHERE'S MY WEEKLY DOSAGE OF PHYSICS?
A : mArK rOBEr
Amazing livestream Mr. Rober! Can't wait for the next one!! Cheers!
Will you be doing more live classes? We LOVE them!
Here in Germany the schools have been open since around June and this video actually helped me in my physics lesson
During these lonely and stressful times, I kind of preferred your science classes to the regular monthly videos.
Is it possible to move a magnetic train (Maglev) by pushing it with hands ????
My long time unanswered question
I'd think so. If it's ON and floating (with the breaks OFF) a bunch of people could push it.
Full disclaimer; I'm not a scientist, teacher, or anything like that and this is just an educated guess buuuuuut I'm gonna go with a *yes*.
That large mass means a lot of inertia. It will take a decent amount of pushing to get it moving, but theoretically if you could get enough traction and force then yes you could move it with your bare hands.
Speaking of traction; for every action there's an equal and opposite reaction. So the more you push on it; the more it "pushes" back on you. So given the large amount of inertia it has, you would likely need a wall to push off of; or some means of not just pushing yourself away from the train.
The one thing helping you however is that thanks to the Maglev hovering above the track without physically touching anything; it has a VERY low amount of friction you would need to overcome.
Force = Mass X Acceleration. A train has a lot of mass, and you as a person could only impart a relatively small amount of force. As a result assuming you generated enough force to move it; you likely wouldn't cause it to accelerate very quickly.
So I would guess "yes" you could move it with your bare hands but you would need a lot of traction, a lot of force, and it probably wouldn't accelerate very quickly. Or you could get a large group of people to help, but I think that goes against the spirit of the question. But like I said; I'm no scientist and would love for someone to shed some light on if I'm close or way off😂.
Yes, after seeing proof from a Chinese science reality show
Keep it up bro! Best videos I've probably ever seen.
I like how he just drops the book and scale on the floor. Doesn't set it down, he just drops it
Your teaching methods are so interesting and fun and I love to say now physics is my favourite subject
Thank you Mark 💜💜💫
I can’t find where to post the answers for the question, so I’ll just post here. When every part of your parachute has failed, you want to look for two things in particular, snow and trees. Either of these will help lessen the fall, but you will still be injured, now way around it. In the case that you see either of these options, follow these steps: 1. Tilt your feet down when you get close to the grounds, and essentially pencil dive. This will injure your legs, but they will absorb some force also. 2. Put your hands behind your neck in order to protect your neck from injury. 3. Brace for impact, and upon hitting the ground, roll forward to try and disperse your force. 4. Stay awake from the shock until medical help arrives. Anyways, that’s my short answer! Hope you end up seeing this!
I learned more in this one video than all my years of school
Hi! I am Homeschool and I do video classes online and they’re very boring just to sit and watch for 50 minutes. I learned so much with this little video and I love how you’re hands-on and explain it very deeply you should really consider doing science classes for homeschoolers or just online classes.
Few questions (some unrelated):
What does mark look like without a hat?
How does denser water effect the result?
How does lighter water affect the result?
Why are water towers higher in the air if the depth of the water matters rather then height of which the pool of water is?
What about water do we need to live?
Is it possible that all the particles, cells, etc could pass through a table’s particles if we hit it, making your hand go fully through?
Few answers,
denser water will increase the pressure as density is defined as mass/unit volume. So if you have more mass (denser) over the same volume of water, the force will be greater.
The opposite can be said for lighter water.
The depth of water RELATIVE to the point at which the water is released is what is important. If you think of the experiment Mark did with the water bottle, but now the bottle is a hill and the holes are people's houses. The person at the bottom of the hill will have more pressure because the relative height or depth of water is greater. That's why water towers are made high so you have good pressure.
"Whether you have two feet or one feet on..."
Quote of the day.
Also literally what I say everytime.
Can I just say that while I did not watch live, these are absolutely amazing
Learned more in these classes than the whole rest of the 2020 school year
2020: in 2020 we will have flying cars!
youtube: what if we flush toilets at once?
Wait, what?
How to land:
First spread hand and legs to increase SA and therefore air resistance
Second, when u hit land tuck ur chin and use 1 of these falling techniques from taekwondo:
tuck chin and roll forward
Tuck chin smack forearms against the ground and roll back backwards
These techniques will dissipate the energy over a longer period of time and while u will have broken bones, with ur chin tucked in ur head and neck should be protected
Immediately thought of ned's declassified survival guide 😂
Bro how tf i learn more here than in all my years of school no cap
"I'm making poor life choices" - MAWK WOBA
Truer words have never been spoken.
I'm learning more than a whole school day. edit year
In my brother's science class they talked about you and the dart board thing you did. I just thought that it was kinda cool.
Lol Mark @ 26:56 "If jump out of a PARACHUTE and your PARACHUTE fails.." LOL, gotta love Live
The real question is, "How many times did Mark say 'Baby'?" lol
"wether you have 2 feet on or 1 feet on"
- Marck Rober 2020
Dont wanna be that guy but your spelling
“Two organisms out front... a woman with high heels on” 🤣🤣🤣
you like toes
Hey mark I love your videos and you actually helped me in class by teaching me stuff so great job
This is the best yt channel ever
When I first watched one of your vids is when I realized I wanted to go to college for robotics
I don’t understand science when other people explain it but when mark does, it makes science more fun and easy
This man deserves an award!!!!