Top network posts

• 41 When is the Hamiltonian of a system not equal to its total energy?
• 16 Why does the sound pitch increase on every consecutive tick at the bottom of a filled cup of coffee?
• 14 A simple pendulum moving at a relativistic speed - how does the period change?
• 10 Do particles always flow from high to low pressure?
• 10 Arnold's proof of Abel's theorem
• 7 When is temperature not a measure of the average kinetic energy of the particles in a substance?
• 6 What determines the bounce time of an elastic ball?
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