Physics Questions, Problems & Solutions : TransWikia.com ~ Page 333

3d motion of electron in 1d quantum well

Quantum wells where the potential varies along only one direction are typically solved assuming that electrons can only move along the direction. What happens when the 'well' is actually an...

Asked on 05/16/2021 by Denn

1 answer

Drainage Effects on Series of Batteries with some Reversed

Lets say you have three batteries.Each are 1.5V, put in series with the others, but one is reversed. ---[- +][- +][+ -]---The total voltage is 1.5VHow does the orientation of...

Asked on 05/16/2021 by Daniel Shumaker

0 answer

Neutron falling off a cliff edge

Consider a particle, say a neutron, of mass $m$ moving from some $x < 0$ with some speed $ v_0 $ in the positive $x$...

Asked on 05/16/2021

0 answer

What is electromagnetic radiation (when it is not a 'wave' of EM fields or interacting locally as a photon)?

My questions are related to the question asked at Are EM radiation and EM waves the same thing?. My background is in math (my Ph.D. thesis was in geometric...

Asked on 05/16/2021

2 answer

Can concepts like "critical damping" or "resonant frequency" be applied to more complex systems than just a spring and damper in parallel?

I am trying to do some modeling analysis by representing materials with parallel systems of springs and dampers. In the simplest case with just one spring parallel to a damper,...

Asked on 05/16/2021

2 answer

Where does one more '$rm m$' come from in the units?

$$nabla times A = B$$ $A$ is vector magnetic potential, $mathrm{Wb/m}$ $B$ is magnetic field intensity, $mathrm{Wb/m^2}$ Where does one more m come from for...

Asked on 05/16/2021

2 answer

Neutral $B$-meson oscillations

I would have a question about an Equation in Mark Thomson's book "Modern Particle Physics". On page 397, Eq. (14.62), he arrives at $$vert Bleft( tright)rangle = frac{1}{2}left[ theta_{+}vert...

Asked on 05/16/2021

1 answer

Why isn't the variance of a quantum observable depend on how gently or roughly the measurement is carried out?

Consider an ensemble specified by a state $|psirangle$ on which we decide to make measurements of an observable $A$. If the state $|psirangle$ is not an eigenstate...

Asked on 05/16/2021

1 answer

Why do you add independent solutions when finding a general equation for SHM?

In my physics class, we have an assignment based on simple harmonic motion with the differential equation:$$frac{d^2x}{dt^2} + afrac{dx}{dt} + a^2x = 0$$ Different parts of...

Asked on 05/16/2021 by ajzcole

1 answer

Faraday's Law From two different Frame of Reference

Let's take Faraday's experiments of induce emf where He take a loop and a magnetic field, for instance let's suppose we have an coil and a magnet, Now If we...

Asked on 05/16/2021

1 answer

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