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zh1's user avatar
zh1's user avatar
zh1
  • Member for 8 years, 8 months
  • Last seen more than 1 year ago
  • North Carolina
24 votes
Accepted

Why do people say that Hamilton's principle is all of classical mechanics? How to get Newton's third law?

23 votes
Accepted

Why is the potential energy equal to the negative integral of a force?

15 votes
Accepted

What is meant by multiplication in physics such as $s = v·t$?

14 votes

Microscopically, are all collisions really elastic collisions?

7 votes
Accepted

What is the formula for the intensity of light, and how are amplitude, frequency and number of photons considered?

5 votes
Accepted

Is Newton's third law due to inertia?

5 votes

Moment of Inertia

5 votes
Accepted

Why is the helmholtz free energy minimized?

5 votes

How dose the factor $1/2$ in $E=\frac{1}{2} mv^2$ disappear in QM?

4 votes
Accepted

What happens to the electric field and the potential difference in a capacitor when the distance between the plates is doubled?

4 votes

Derivation of the capacitance of a cylindrical capacitor

4 votes

Does applying $5\mathrm{N}$ force on a object for $2$ seconds mean applying $10\mathrm{N}$ force on that object?

4 votes

Which observer measures proper time in the twins paradox?

4 votes
Accepted

What is Magnetic Intensity?

3 votes

Is there any reason why $N\ kg^{-1}$ shouldn't be used as the units for acceleration?

3 votes

I was learning SHM and I came across equation $k = mw^2$

3 votes

How to derive a pendulum's motion without torque and angular momentum?

3 votes
Accepted

How to calculate the Sun’s energy output?

3 votes

Moment of inertia of a non uniform rod

3 votes

Sign of work done by friction

3 votes
Accepted

Why is sound produced when we hit a metal?

2 votes
Accepted

Determine velocity of balloon from known Buoyancy, mass and surface

2 votes

Potential inside a uniformly charged spherical shell

2 votes

Deriving torque from Euler-Lagrange equation

2 votes

How does energy flow in a circuit?

2 votes
Accepted

What is kinetic mass of photon?

2 votes

What does electrical potential at a point mean?

2 votes
Accepted

Vector units with different unit in each component

2 votes

Are zero heat exchange and zero work done synonymous to reversibility?

2 votes

Zero curl of magnetic field and Ampére's law