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Jun
19
comment What happens with the force of gravity when the distance between two objects is 0?
possible duplicate: physics.stackexchange.com/q/2481
Jun
19
comment What happens with the force of gravity when the distance between two objects is 0?
$GmM$ is not constant along the path to the center of the Earth. $M$ starts to decrease once you are underground, and becomes zero right at the center of the Earth.
Jun
16
revised Toward the establishment of non-equilibrium (quasi-equilibrium) magnon BEC theory
tex, removed greeting
Jun
16
suggested approved edit on Toward the establishment of non-equilibrium (quasi-equilibrium) magnon BEC theory
Jun
14
reviewed Reviewed Neutral pions and chromodynamics
Jun
12
comment How can Magnets be used to pick up pieces of metal when the force from a magnetic field does no work?
related: physics.stackexchange.com/q/10565
Jun
12
accepted Differences between spin waves and spin density waves
Jun
12
revised How does a phonon cause two electrons to attract each other and form a cooper pair?
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Jun
12
asked Differences between spin waves and spin density waves
Jun
12
revised Energy Change in a Capacitor by Inserting Dielectric
tex
Jun
12
suggested approved edit on How does a phonon cause two electrons to attract each other and form a cooper pair?
Jun
12
suggested approved edit on Energy Change in a Capacitor by Inserting Dielectric
Jun
9
revised Bose gas with $T = 0$ and $\mu < 0$
tex
Jun
9
comment Bose gas with $T = 0$ and $\mu < 0$
You might interested in this: tex.stackexchange.com/q/47078
Jun
9
suggested approved edit on Bose gas with $T = 0$ and $\mu < 0$
Jun
9
comment Friction acting on a particle on a rough place
There is static friction even when the particle is not moving. Friction always acts in the direction to oppose motion.
Jun
9
comment Newton's third law of motion, and the collapse of objects under heavier weight
Newton's third law doesn't say anything about whether the table will collapse. It only says that if the truck exerts a force $W$ on the table, the table also exerts $-W$ on the truck. This is true regardless of whether the truck is in a stationary position.
Jun
8
reviewed No Action Needed Can a rock be considered frozen
Jun
7
reviewed No Action Needed How to derive the velocity in the double ball drop problem?
Jun
7
reviewed No Action Needed Physics of donut magnets levitating vertically on a pencil?