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Physics
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zh1
  • Member for 8 years, 10 months
  • Last seen more than 3 years ago
  • North Carolina
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I am a PhD student in astrophysics, studying galaxy formation and evolution at the University of North Carolina at Chapel Hill.

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24
Why is the potential energy equal to the negative integral of a force?
24
Why do people say that Hamilton's principle is all of classical mechanics? How to get Newton's third law?
15
What is meant by multiplication in physics such as $s = v·t$?
14
Microscopically, are all collisions really elastic collisions?
7
What is the formula for the intensity of light, and how are amplitude, frequency and number of photons considered?