Here's a good thought experiment I thought of that makes you think about gravity and the nature of objects in motion:
When you jump up in the air, the Earth is beneath you when it lands. No matter how high you jump, the location you jumped from will be beneath you considering you jumped at rest relative to the Earth.. but what if you hypothetically jumped straight up hundreds of kilometers? Is the location on Earth that you jumped from still going to be directly beneath you? If it's always directly beneath you, and the Earth is rotating, wouldn't that from the frame of reference of everything else in the solar system, you'd appear to be flying around the Earth in a circle at impossible speeds, completing a distance of one circle around the Earth along with the Earth as it makes a full rotation?
That can't happen.. can it? Well, it actually does happen - it's happening to objects in orbit around the Earth right now. The reason that the same spot on the Earth below doesn't stay the same for, say, a spacecraft in orbit above Earth, is because the velocity required to stay in orbit around the Earth without falling back down to it changes depending on altitude, and your relative velocity with the rotation of the Earth that you had initially after jumping accounts for less and less of the velocity required to stay in orbit the higher up you get.
For spacecraft taking off from Earth, their trajectory upwards from the Earth into space will appear as a curved path going with the Earth's rotation due to Earth's gravity, as if what we proposed earlier is actually true! =) But, due to the increase in velocity required to keep the spacecraft in orbit, the location that is directly below it on Earth ends up changing.
Thread: passive aggressive vs aggressive
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01-08-2014
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01-08-2014
Edited the above post so it actually makes sense when read:
Here's a good thought experiment I thought of that makes you think about gravity and the nature of objects in motion:
When you jump straight up in the air, you more or less land in the same spot you jumped from - No matter how high you jump, the spot you jumped from should be beneath you considering you jumped at rest relative to the Earth.. but what if you hypothetically jumped straight up hundreds of kilometers? Is the location on Earth that you jumped from still going to be directly beneath you? If it's always directly beneath you, and the Earth is rotating, wouldn't that appear to everything else in the solar system as flying around the Earth in a circle at impossible speeds, completing a distance of one circle around the Earth in the same time as Earth making a full rotation?
That can't happen.. can it? Well, it actually does happen, but not like that - it happened to objects in orbit around the Earth when they initially launched off. However, due to the spacecraft having to continuously accelerate to escape Earth's orbit and not fall back down to it, the spot on Earth directly below you changes with the ship's change in velocity. However, if you hypothetically jumped up 300km into space, and we eliminated factors like air/wind and not being able to jump 'perfectly straight up', and if the speed you're jumping into the air at doesn't exceed the Earth's escape velocity, you will land in the same spot you jumped from.
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always steveyking steveyos01-08-2014
pluggy is high on speed for sure, he's been doing this all night.
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steveyosking steveyos01-08-2014
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always steveyking steveyos01-08-2014
I still don't understand what this has to do with pushing shopping carts or threatening suicide on tinychat. I wonder if those can be explain by physics?
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steveyosking steveyos01-08-2014
COLD MOUNTAIN AIR. WE WALKED ON VALIENTLU OUR SWORDS AND AEMOR GLISRENINFG INNTHE SUN AA RHE SWEAT DRIPPED FROM OUR BALLS. ALL THWAE FEMALES CRAWLED. THE FOREST WAS DAEK AND COLS AND BABIES CRIED BECAUSE THEY WERE OUT OF BULLETS. I GOT FIVE ON IT AND THE SKY WIZARD DISD NOT SHINE HIS LIGHT UPON HISNSOLDIERS THAT DAY. WE SLAUGHTRED THEM ALL.
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steveyosking steveyos01-08-2014
MANY DAYS AND MANY NIGHTS PASSED. I SAW WE SAW WE STARED INTO THE DISTANCE WHERE WE SAW WHAR WE AAW. F AND INNTHAT MOMENT HE WAS CLEAN. MANY BEFORE US WOMDERED WOMDERS ABOUTNWHY WE WERE BEFORE AND THEN I WAS AT THE SRORE AND SAW THE LATEST ISSUE OF CUM MAGAZINE. IT TURNS OUT MARSHMELLOWS ARE GREAT WHEN USED PROPERLY. I WISH I WAS A GIRL AND WHENNTHE LAZERS FROMMTHE UFO CUT THE TREE IN HASLD JIMBOB KNEW WHAT HE MUST DO. OH MY CAT IS MEOWING BRB GONNA PLAY WITH HER
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01-08-2014
That's what I DO
i remember you and lisa going on about m theory and p branes and shit. yeah everyone knows that brian greene shit. it's totally theoretical and i remember lisa going on abot how no one here knows anytning about it and only plugdrugs can tlk to her on her level
the truth is no one is interested in talking to morons about this shit. they just let it passLast edited by Plug Drugs; 01-08-2014 at 07:55 AM.
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01-08-2014
do you know what I'm really doing half the time? I'm piecing together how much everyone else knows about these things to figure out how much knowledge is already common, and the other half of the time I'm trying to lure someone in who knows more than I do so they can help me improve my knowledge of these topics by pointing out where I'm wrong. Most of the time I'm just babbling though and it's noise coming out of my head, down my arms, and through the keyboard
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01-08-2014
I tried going to physics forums and just asking questions, but they don't like it none too much when you're sneaking in the education they've paid for for free. No, you usually can't just straight up ask a person for something; unless you break them down in a 1v1, but then it's too time consuming to find a guy who actually knows something.
I'm trying to cut corners through the bullshit. I'm not going to pay thousands of dollars for what I want at a college and end up getting EZ Bake Cookie recipes instead of actual knowledge
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01-08-2014
It's a war son, a war... the war on bullshit
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01-08-2014
The most efficient way to communicate information is when you're able to act competitive with a group of people without it being viewed as negative.
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01-08-2014
When you know that what someone is saying is total bullshit, you should be able to call them on it without them taking it all personally like they're some upper-middle class autist playing soccer in elementary school.
Information though, not opinions on their life choices. When someone is breeding misinformation, stop them. If you don't like someone as a person, get over it and grow up.
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01-08-2014
You don't have to be a drug addict for it to make sense. Come on now, the hour is getting late, cut deep - what do you call bullshit on?
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01-08-2014
Here's one: people who think they have gluten allergies.
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01-08-2014
restless leg syndrome
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01-08-2014
tylenol
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01-08-2014
clothes that have holes in them before you even buy them
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01-08-2014
global warming
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01-08-2014
is the solution to world hunger really so difficult or are we just too lazy to go over there and actually fix it?
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01-08-2014
Dr Phil
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01-08-2014
Oprah
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01-08-2014
Come on, clocks ticking and there is still a lot more bullshit left to cover
Last edited by Plug Drugs; 01-08-2014 at 08:27 AM.
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01-08-2014
cable news stations
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01-08-2014
satellite tv
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01-08-2014
phone plans
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01-08-2014
reality tv shows
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