/r/AskPhysics

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Why does my wristwatch feel significantly heavier under water?

31 upvotes • snafusis

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Why are solar sails reflective?

28 upvotes • Big-Manufacturer1845

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Is there a theoretical limit on acceleration on physics?

25 upvotes • FervexHublot

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Hawking radiation causing black hole decay?

24 upvotes • LmaoLmbaoLmfao

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Can you Generate Electricity from radioactive materials similar to using solar panels?

24 upvotes • Ep1cH3ro

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What would happen if you had someone run full speed on a treadmill, and it unexpectedly came to a halt?

23 upvotes • d4v3k7

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Does quantum mechanics have predictive power?

23 upvotes • Asleep-Painting4086

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I'm 1000 years in the past with my phone and magical internet. I have built a simple generator, but my phone's battery is getting low and I need to make sure I'm feeding it the proper amperage and voltage. How do I make sure my units are correct?

23 upvotes • Various-Character-30

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If body fat is potential energy could a giant lab grown mass of fat be converted into electricity and used as a power plant?

22 upvotes • Beneficial_Bonus_162

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Why does a chair someone else sat on, feel warmer than one I sat on?

22 upvotes • _rkf

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Why does my wristwatch feel significantly heavier under water?	31	snafusis
Why are solar sails reflective?	28	Big-Manufacturer1845
Is there a theoretical limit on acceleration on physics?	25	FervexHublot
Hawking radiation causing black hole decay?	24	LmaoLmbaoLmfao
Can you Generate Electricity from radioactive materials similar to using solar panels?	24	Ep1cH3ro
What would happen if you had someone run full speed on a treadmill, and it unexpectedly came to a halt?	23	d4v3k7
Does quantum mechanics have predictive power?	23	Asleep-Painting4086
I'm 1000 years in the past with my phone and magical internet. I have built a simple generator, but my phone's battery is getting low and I need to make sure I'm feeding it the proper amperage and voltage. How do I make sure my units are correct?	23	Various-Character-30
If body fat is potential energy could a giant lab grown mass of fat be converted into electricity and used as a power plant?	22	Beneficial_Bonus_162
Why does a chair someone else sat on, feel warmer than one I sat on?	22	_rkf