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How To Keep Track Of Your Turtle
Didn't some mouth-breather on 4chan attach a bazillion helium balloons to a toad and basically send in into the stratosphere?
I seem to recall that.
Solving By Using 'Extreme Case' Puzzles With Physics Girl
Problem 1: Tip toward the wood, as the wood will lose more buoyancy from the air than the lead.
As for the extreme case here, let's use the helium balloon. You tie the helium balloon to the right hand side of the scale. Now, to get the bar on the scale horizontal (balanced) you need to hang the lead weight closer to the fulcrum but on the right hand side of the scale too.
Now remove the air.
The balloon was only pulling up because of the air. Without the air it will hang down. So, we now have two things hanging down on the same side of the scale, so it's very obvious which way the scale will swing...
Problem 2: pi*20m Circumference = pi*diameter. Poles increase diameter by 20m. Really not sure where the 'extreme case' comes into this though?
Beats the hell out of me.
Just to noodle around a bit, the only extreme I can think of about the scales would be to substitute an extremely low density object for the wood. Say, a helium filled balloon? But that assumes that she did in fact mean equal mass for the two objects, and wouldn't actually give valid readings on a scale in atmosphere anyway.
Extreme cases are a rather specialized approach, as I remember...its not really a common, or easy way to get answers. I got the feeling this was kind of a "wannabee" presentation. Like she wanted to do "Smarter every day" stuff but isn't quite able to find and explain interesting non-intuitive problems well.
Liquid Helium And Party Balloons
Maybe party balloons should be filled with hydrogen. Could be way more exciting than helium balloons.
edit: guess I should have finished the video before posting.
Helium Balloon Launch Goes Spectacularly Wrong
I agree. A hydrogen balloon would have exploded almost instantly once catching fire. Here the boom doesn't come until the balloon is nearly gone and is likely an electrical explosion.
>> ^shuac:
Looked to me like the balloon itself, the paper-like material, was the thing that caught fire. And the explosion was caused by contact with the power transformer. Therefore, it probably was helium.
Helium Balloon Launch Goes Spectacularly Wrong
>> ^Fusionaut:
Yeah, helium isn't flammable. My first thought was hydrogen but what do I know?
Hydrogen is the only gas that's enough lighter than air to lift a balloon which burns.
Youtube's Red Light Runners compilation
>> ^cybrbeast:
Damn, 2:30 kid and parent being hit, you see the helium balloon fly up. Terrible.
When I saw that the first thing I thought was, "I'm going to comment about it!" But... you beat me to it
Youtube's Red Light Runners compilation
Damn, 2:30 kid and parent being hit, you see the helium balloon fly up. Terrible.
Why Did The Church Cross The Street?
might've been easier just to attach a couple thousand helium balloons to the steeple.
How easy is it to fool UFO believers?
Isn't tying a burning road flare to a helium balloon then launching it over a FOREST a touch dangerous? I mean, the Japanese sorta did this in World War 2 for the express purpose of burning down the entire pacific northwest.
How easy is it to fool UFO believers?
Tags for this video have been changed from 'very, ufo hoax, Morristown, New Jersey, flares, helium baloons, prank' to 'very, ufo hoax, Morristown, New Jersey, flares, helium balloons, prank' - edited by jonny
Best 10 minutes from Mars Attacks!
>> ^budzos:
Although this movie is terrible in many ways, I have watched the DVD a few times in the fast four or five years. There is a lot to like here, they just took the satirical tone a few degrees too far.
Agreed. But you gotta love Jack's reaction to the aliens sucking down the nuke via helium balloon. Brack brack!
How to make your car float away
Saw an episode of braniacs where they floated john tickle. they used some very large balloons equal to something like 1000 normal helium balloons each. think it was 33000 ish for a man. so a car is way off.