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peter_pan:
Centrifugal force.
Suppose you have a rock on a rotating asteroid. Suppose the asteroid rotates so fast that the rock is lifted from the su…
 updated yesterday
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terri1956:
A spring with spring constant .7 cm/dyne has a force of 42 dynes applied to it (stretching it). How much does the spring stretch?
 updated 18 days ago
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peter_pan:
space translation invariance in quantum mechanics
if \psi is the wave function of a 1D system is it equivalent to say that translation invar…
 updated 2 months ago
 2 replies
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peter_pan:
Hi everybody! I don't understand the output voltage of a non inverting ideal integrator! I attach a picture of the circuit and the relation …
 updated one year ago
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peter_pan:
Quantum Mechanics (but the question is about calculus): I was studying the proof of the conservation of ∫ψ²d³r (ψ is the wave function) bu…
 updated one year ago
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peter_pan:
Quantum Mechanics (the very beginning): I was studying the proof of the conservation of ∫ψ²d³r (ψ is the wave function) but I don't unders…
 updated one year ago
 4 replies
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peter_pan:
STATISTICAL MECHANICS PROBLEM (CLASSICAL CANONICAL ENSEMBLE):
 updated one year ago
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peter_pan:
Hi! I have a question about the following circuits A and B!
 updated one year ago
 8 replies
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rocker8007:
can someone show how to find the coordinates of center of mass of a disk using double integrals?
 updated one year ago
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Ruchi.:
find centre of mass of a hemisphere?
 updated one year ago
 39 replies
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peter_pan:
Consider a pn junction. Why does the depletion layer become bigger when you reverse bias the junction?
 updated one year ago
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peter_pan:
Consider a pn junction. Why does the depletion layer become bigger when you reverse bias the junction?
 updated one year ago
 9 replies
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DLS:
Can a body have increasing velocity with decreasing acceleration?
 updated one year ago
 30 replies
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Amberley:
In what direction does current flow in a DC circuit?
 updated one year ago
 7 replies
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peter_pan:
Is the Lagrangian function invariant under coordinate transformations? If so, where can I find a proof?
…
 updated one year ago
 11 replies
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mayank.jain:
what is newton's inertial frame of reference?
 updated one year ago
 7 replies
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peter_pan:
How can I calculate the output impedance of an emitter follower (see the last post for details) and of a transformer? How matching impedance…
 updated one year ago
 16 replies
 4 Medals