Questions Asked

peter_pan:
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Ball thrown over a rotating platform.
 updated 6 months ago
 32 replies
 1 Medal

peter_pan:
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Collision of a ball with the ground.
1) Suppose you have a ball and you let it fall from a height h1. It will acquire a final velocity, say …
 updated 7 months ago
 1 reply
 No Medals Yet

peter_pan:
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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 10 months ago
 4 replies
 1 Medal

peter_pan:
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Can somebody explain to me how the mass to luminosity ratio for galaxies has to do with dark matter please? Or at least give me some referen…
 updated 11 months ago
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peter_pan:
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Wavefunction of two nucleons:
why is the wavefunction of two nucleons interacting via hadronic interaction antisimmetric?
(1)^(L+S+T)
 updated one year ago
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peter_pan:
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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 one year ago
 2 replies
 1 Medal

peter_pan:
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Question about groups and representations for physics:
does it make any sense saying that "SO2 is a representation of U1 carried by the vect…
 updated one year ago
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peter_pan:
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Can someone tell me why, when I connect a thermocouple to an opamp, the comparator circuit I obtain can not work? I know that this is due t…
 updated 2 years ago
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peter_pan:
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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 2 years ago
 1 reply
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peter_pan:
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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 2 years ago
 1 reply
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peter_pan:
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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 2 years ago
 4 replies
 1 Medal

peter_pan:
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STATISTICAL MECHANICS PROBLEM (CLASSICAL CANONICAL ENSEMBLE):
 updated 2 years ago
 2 replies
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peter_pan:
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Hi! I have a question about the following circuits A and B!
 updated 2 years ago
 8 replies
 2 Medals

peter_pan:
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Consider a pn junction. Why does the depletion layer become bigger when you reverse bias the junction?
 updated 2 years ago
 3 replies
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peter_pan:
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Consider a pn junction. Why does the depletion layer become bigger when you reverse bias the junction?
 updated 2 years ago
 9 replies
 2 Medals

peter_pan:
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How can I calculate the output impedance of an emitter follower and of a transformer starting from the definition? (please include details a…
 updated 2 years ago
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peter_pan:
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Is the Lagrangian function invariant under coordinate transformations? If so, where can I find a proof?
…
 updated 2 years ago
 11 replies
 2 Medals

peter_pan:
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Is the Lagrangian function invariant under coordinate transformations? If so, where can I find a proof?
 updated 2 years ago
 1 reply
 No Medals Yet

peter_pan:
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What are input and output impedences?
As an example, how can I calculate the input and output impedences of an emitter follower?
…
 updated 2 years ago
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peter_pan:
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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 2 years ago
 16 replies
 4 Medals