/u/Pupikal's posts in /r/askscience

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If I were traveling at near the speed of light (enough to significantly slow time), would I be able to "think" normally? Would I be able to tell that time is slowing down?

3574 upvotes

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The Saturn V Rocket is called the most powerful engine in history, with 7.6 million pounds of thrust. How can this number be converted into, say, horsepower or megawatts? What can we compare the power of the rocket to?

2519 upvotes

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For two objects 50 billion light years away from each other, can it be said that anything happens on them simultaneously? Is there "simultaneousness" even with time dilation, etc?

14 upvotes

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I've read that water is "incompressible." Are there any properties of water in the deep ocean that are different from what's in my glass?

9 upvotes

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If I were to accelerate to nearly the speed of light, would I be able to detect the change in time?

3 upvotes

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Does the energy it takes to expel water from a submersed object exceed the energy it could generate when it rises to the surface?

2 upvotes

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Does hair grow perpetually? That is, is the hair-growing process constant or does it"pause" for any length of time before continuing?

1 upvotes

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If one were to drill a hole the size of Texas through the Earth's crust, how long would it take for the mantle/core to fully cool?

1 upvotes

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What happens when or bodies seem to "acclimate" to warmer/colder weather?

1 upvotes

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If I launched a nuclear missile into space, how far from Earth would it need to go for us to be safe from its radiation? Would the explosion be visible from that distance?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If I were traveling at near the speed of light (enough to significantly slow time), would I be able to "think" normally? Would I be able to tell that time is slowing down?	3574
The Saturn V Rocket is called the most powerful engine in history, with 7.6 million pounds of thrust. How can this number be converted into, say, horsepower or megawatts? What can we compare the power of the rocket to?	2519
For two objects 50 billion light years away from each other, can it be said that anything happens on them simultaneously? Is there "simultaneousness" even with time dilation, etc?	14
I've read that water is "incompressible." Are there any properties of water in the deep ocean that are different from what's in my glass?	9
If I were to accelerate to nearly the speed of light, would I be able to detect the change in time?	3
Does the energy it takes to expel water from a submersed object exceed the energy it could generate when it rises to the surface?	2
Does hair grow perpetually? That is, is the hair-growing process constant or does it"pause" for any length of time before continuing?	1
If one were to drill a hole the size of Texas through the Earth's crust, how long would it take for the mantle/core to fully cool?	1
What happens when or bodies seem to "acclimate" to warmer/colder weather?	1
If I launched a nuclear missile into space, how far from Earth would it need to go for us to be safe from its radiation? Would the explosion be visible from that distance?	1