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Q. What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?
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Q. From what height would you need to drop a steak for it to be cooked when it hit the ground?
Q. This may be a bit gruesome, but . . . if someone’s DNA suddenly vanished, how long would that person last?
Q. Is there enough energy to move the entire current human population off-planet?
Q. I was absentmindedly stirring a cup of hot tea, when I got to thinking, “Aren’t I actually adding kinetic energy into this cup?” I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?
Q. How much physical space does the Internet take up?
Q. What if a rainstorm dropped all of its water in a single giant drop?
Q. If you suddenly began rising steadily at 1 foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?
Q. How close would you have to be to a supernova to get a lethal dose of neutrino radiation?
Q. What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?
Q. Is it possible to build a jetpack using downward-firing machine guns?
Q. What would happen if you tried to hit a baseball pitched at 90 percent the speed of light?
Q. I read about some researchers who were trying to produce sperm from bone marrow stem cells. If a woman were to have sperm cells made from her own stem cells and impregnate herself, what would be her relationship to her daughter?
Q. Assuming a zero-gravity environment with an atmosphere identical to Earth’s, how long would it take the friction of air to stop an arrow fired from a bow? Would it eventually come to a standstill and hover in midair?
Q. How hard would a puck have to be shot to be able to knock the goalie himself backward into the net?
Q. How quickly would the oceans drain if a circular portal 10 meters in radius leading into space were created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water was being drained?
Q. 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?
Q. How dangerous is it, really, to be in a pool during a thunderstorm?
Q. How much Force power can Yoda output?
Q. What would happen if lightning struck a bullet in midair?
Q. If you call a random phone number and say “God bless you,” what are the chances that the person who answers just sneezed?
Q. If an asteroid was very small but supermassive, could you really live on it like the Little Prince?
Q. How much computing power could we could achieve if the entire world population stopped whatever we are doing right now and started doing calculations?How would it compare to a modern-day computer or smartphone?
Q. What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?
Q. When, if ever, will Facebook contain more profiles of dead people than of living ones?
Q. What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?
Q. How fast can you hit a speed bump while driving and live?
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