Physics
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zh1
  • Member for 7 years, 5 months
  • Last seen more than a week 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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All Questions Answers
Score Newest
answer
23
Why is the potential energy equal to the negative integral of a force?
Aug 1, 2016
answer
22
Why do people say that Hamilton's principle is all of classical mechanics? How to get Newton's third law?
Jan 1, 2018
answer
15
What is meant by multiplication in physics such as $s = v·t$?
May 22, 2020
answer
14
Microscopically, are all collisions really elastic collisions?
Sep 6, 2021
answer
5
What is the formula for the intensity of light, and how are amplitude, frequency and number of photons considered?
May 17, 2018
answer
5
Is Newton's third law due to inertia?
Apr 27, 2018
answer
5
Moment of Inertia
Aug 20, 2016
answer
5
How dose the factor $1/2$ in $E=\frac{1}{2} mv^2$ disappear in QM?
Aug 10, 2018
answer
4
Why is the helmholtz free energy minimized?
Jun 14, 2018
answer
4
Does applying $5\mathrm{N}$ force on a object for $2$ seconds mean applying $10\mathrm{N}$ force on that object?
May 15, 2020
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6
Relation between angular resolution and aperture?

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