xkcd: What If?

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xkcd: What If?

Postby bystander » Tue Sep 25, 2012 4:21 pm

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Answering your hypothetical questions with physics, every Tuesday.

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Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #1 - Relativistic Baseball

Postby bystander » Tue Sep 25, 2012 4:23 pm

Relativistic Baseball

    What would happen if you tried to hit a baseball pitched at 90% the speed of light? — Ellen McManis
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #2 - SAT Guessing

Postby bystander » Tue Sep 25, 2012 4:24 pm

SAT Guessing

    What if everyone who took the SAT guessed on every multiple-choice question?
    How many perfect scores would there be? — Rob Balder
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #3 - Yoda

Postby bystander » Tue Sep 25, 2012 4:26 pm

Yoda

    How much Force power can Yoda output? — Ryan Finnie
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #4 - A Mole of Moles

Postby bystander » Tue Sep 25, 2012 4:27 pm

A Mole of Moles

    What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place? — Sean Rice
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #5 - Robot Apocalypse

Postby bystander » Tue Sep 25, 2012 4:28 pm

Robot Apocalypse

    What if there was a robot apocalypse? How long would humanity last? — Rob Lombino
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #6 - Glass Half Empty

Postby bystander » Tue Sep 25, 2012 4:30 pm

Glass Half Empty

    What if a glass of water was, all of a sudden, literally half empty? — Vittorio Iacovella
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #7 - Everybody Out

Postby bystander » Tue Sep 25, 2012 4:33 pm

Everybody Out

    Is there enough energy to move the entire current human population off-planet? — Adam
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #8 - Everybody Jump

Postby bystander » Tue Sep 25, 2012 4:47 pm

Everybody Jump

    What would happen if everyone on earth stood as close to each other as they could and jumped,
    everyone landing on the ground at the same instant? — Thomas Bennett (and many others)
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #9 Soul Mates

Postby bystander » Tue Sep 25, 2012 4:48 pm

Soul Mates

    What if everyone actually had only one soul mate, a random person somewhere in the world? — Benjamin Staffin
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #10 - Cassini

Postby bystander » Tue Sep 25, 2012 4:50 pm

Cassini

    What would the world be like if the land masses were spread out the same way as now -
    only rotated by an angle of 90 degrees? — Socke
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #11 - Droppings

Postby bystander » Tue Sep 25, 2012 4:53 pm

Droppings

    If you went outside and lay down on your back with your mouth open,
    how long would you have to wait until a bird pooped in it? — Adrienne Olson
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #12 - Raindrop

Postby bystander » Tue Sep 25, 2012 4:54 pm

Raindrop

    What if a rainstorm dropped all of its water in a single giant drop? — Michael McNeill
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #13 - Laser Pointer

Postby bystander » Tue Sep 25, 2012 4:56 pm

Laser Pointer

    If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color? — Peter Lipowicz
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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Re: xkcd: What If? #12 - Raindrop

Postby BMAONE23 » Tue Sep 25, 2012 5:09 pm

bystander wrote:Raindrop

    What if a rainstorm dropped all of its water in a single giant drop? — Michael McNeill

That would cause a localized flood of biblical proportions

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xkcd: What If? #14 - Short Answer Section

Postby bystander » Tue Oct 02, 2012 9:49 am

Short Answer Section

In today’s article, I give short answers to several reader questions.

    How long would the Sun last if a giant water hose were focused upon it? My sixth grade brother, Adam, asked me this. — Austin Dickey

    What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass? — Chase Montgomery

    If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up? — Jimmy Morey

    In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation? — Aidan Blake

    How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect? — Yitzi Turniansky

    What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)? — Jake G.

    When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced. — R. D.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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Re: xkcd: What If? #14

Postby owlice » Wed Oct 03, 2012 12:45 am

This ... isn’t actually a question.
i don't know how all these words got on my screen.

But thank you for sharing!

lol!!!
A closed mouth gathers no foot.

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owlice
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Re: xkcd: What If? #14

Postby owlice » Wed Oct 03, 2012 12:48 am

I managed to do so very discretely.

What, pray tell, might have been the other choices? :shock:
A closed mouth gathers no foot.

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Re: xkcd: What If? #14

Postby geckzilla » Wed Oct 03, 2012 5:53 pm

Let it rip and hope she laughs?
Just call me "geck" because "zilla" is like a last name.

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Re: xkcd: What If?

Postby Moonlady » Thu Oct 04, 2012 12:49 am

Funny page!

I had not a long time ago a big virus party going on on my pc which caused some problems I could not solve alone, I called
a friend who is doing his dissertation as computer engineer and he showed me xkcd.com site, especially this sheet:

xkcd.com 627.png


...my solution was: ask Paolo! Mille grazie Paolo :D

...he brought his own notebook and could use google and follow the instructions to solve the problem :lol2: :lol2: :lol2:
You do not have the required permissions to view the files attached to this post.

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xkcd: What If? #15 - Mariana Trench Explosion

Postby bystander » Tue Oct 09, 2012 7:05 pm

Mariana Trench Explosion

    What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench? — Evin Sellin
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #16 - Lightning

Postby bystander » Tue Oct 16, 2012 1:01 pm

Today's topic: Lightning

    How dangerous is it, really, to be in a pool during a thunderstorm? — Jay Gengelbach

    What would happen if you were taking a shower when you were struck by lightning?
    Or standing under a waterfall? — same3chords

    What would happen if you were in a boat or a plane that got hit by lightning? Or a submarine? — SoobNauce

    What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip?
    Or standing in a graphite field? Or looking straight up at the bolt? — Danny Wedul

    What would happen if lightning struck a bullet in midair? — Timothy Campbell

    What if you were flashing your BIOS during a thunderstorm and you got hit by lightning? — njsg
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #17 - Green Cows

Postby bystander » Tue Oct 23, 2012 1:26 pm

Green Cows

    If cows could photosynthesize, how much less food would they need? — Anonymous
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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xkcd: What If? #18 - BB Gun

Postby bystander » Tue Oct 30, 2012 4:08 pm

BB Gun

    In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.”
    What would it take to stop an out-of-control freight train using only b.b. guns? — Charles James O'Keefe
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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Re: xkcd: What If? #18 - BB Gun

Postby emc » Tue Oct 30, 2012 9:51 pm

bystander wrote:BB Gun

    In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.”
    What would it take to stop an out-of-control freight train using only b.b. guns? — Charles James O'Keefe

Take an amount of BB guns to equal the weight of the train and melt them down into a large block then place the block on the track moving from the opposite direction toward the train at the same speed.


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