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

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If gravity operates at the speed of light, how can it get out of black holes?

301 upvotes

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Why is gravitational mass proportional to inertial mass? Do both of them grow as an object reach relativistic speeds?

41 upvotes

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Does gravity work in two dimensional space?

11 upvotes

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How can radioactive materials occur naturally if they are so unstable they are decaying constantly?

9 upvotes

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Does acceleration have a universal maximum, like speed?

8 upvotes

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If the universe was super dense in the beginning, why didn't it create a giant blackhole?

6 upvotes

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If sound is a wave like light, could we create a blackhole-like thing to make it impossible for sounds to escape?

5 upvotes

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Do mirrors reflect all wavelenghts equally?

3 upvotes

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Is the temperature of a single particle scalar or vector?

3 upvotes

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In electromagnetic waves, basically the eletric and magnetic field transform into eachother and travel? How can they do this without losing energy?

3 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If gravity operates at the speed of light, how can it get out of black holes?	301
Why is gravitational mass proportional to inertial mass? Do both of them grow as an object reach relativistic speeds?	41
Does gravity work in two dimensional space?	11
How can radioactive materials occur naturally if they are so unstable they are decaying constantly?	9
Does acceleration have a universal maximum, like speed?	8
If the universe was super dense in the beginning, why didn't it create a giant blackhole?	6
If sound is a wave like light, could we create a blackhole-like thing to make it impossible for sounds to escape?	5
Do mirrors reflect all wavelenghts equally?	3
Is the temperature of a single particle scalar or vector?	3
In electromagnetic waves, basically the eletric and magnetic field transform into eachother and travel? How can they do this without losing energy?	3