/u/123123x's posts in /r/askscience

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Peppers are hot because of capsaicin. Why is ginger root hot? What's the mechanism of action?

1638 upvotes

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[Physics] Do fields actually exist?

15 upvotes

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Elemental half life is always quoted as a constant for a particular isotope. Why doesn't it vary with temperature, for example?

8 upvotes

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I just put lighter wheels on my car, saving about 10 lbs per corner (33% less than the original wheels). Quantitatively, how does this affect the car's performance in a straight line?

1 upvotes

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What happens if an airplane flies around an observer at supersonic speed?

1 upvotes

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If special relativity explores the effects associated with the first order derivative of position (velocity), while general relativity explores the effects of the second order derivative of position (acceleration), what effects if any are associated with the higher order derivatives of position?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Peppers are hot because of capsaicin. Why is ginger root hot? What's the mechanism of action?	1638
[Physics] Do fields actually exist?	15
Elemental half life is always quoted as a constant for a particular isotope. Why doesn't it vary with temperature, for example?	8
I just put lighter wheels on my car, saving about 10 lbs per corner (33% less than the original wheels). Quantitatively, how does this affect the car's performance in a straight line?	1
What happens if an airplane flies around an observer at supersonic speed?	1
If special relativity explores the effects associated with the first order derivative of position (velocity), while general relativity explores the effects of the second order derivative of position (acceleration), what effects if any are associated with the higher order derivatives of position?	1