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Physics : Recent Questions and Answers (Page 118)

Find answers to your questions about Physics or help others by answering their Physics questions.

Is it possible for the Normal Force to do work?

Can a normal force do work? Note: work = $Fdcos(theta)$, where $F$ is the magnitude of the force, $d$ is the magnitude of the displacement, and $theta$ is the angle...

Asked on 08/12/2021

4 answer

Horizontal vector subsepace of electromagnetic connection in Minkowskian spacetime

For Minkowskian space-time $M$, the principal bundle for electromagnetism is $(M times U(1), M, proj_{1}, U(1))$. I imagine there is a global gauge potential (since I can choose...

Asked on 08/12/2021

0 answer

Why do electromagnetic waves detach from the antenna?

In most explanations of how antennas work they say that because of kinks in the electric field of an antenna meets at one point and detaches... I looked up reasons...

Asked on 08/12/2021

2 answer

Question regarding radial raising/lowering operator for isotropic harmonic oscillator

I understand the symmetry structure of the 3D isotropic harmonic oscillator $H = frac{mathbf{P}^2}{2mu} + frac{1}{2}momega^2mathbf{X}^2$ as follows. The energy levels are $E_N = hslash omega (N +...

Asked on 08/12/2021 by Yegreg

1 answer

Calculating underwater pressure at altitude

If I want to calculate the underwater pressure I use this formula: $ P = rho g h$ But is this valid for any altitude? Is it the same...

Asked on 08/12/2021 by SAR_90

2 answer

Do resonant inductive coupling coils need to be on axis to transmit wireless power?

I've recently become interested in Nikola Tesla's resonant inductive coupling method of wireless power transfer. I saw an experiment online and the resonant coils seemed to be on axis, or...

Asked on 08/12/2021

2 answer

Does emission of electron depend on colour instead of brightness of light?

According to photoelectric effect we consider light to be particles to justify the threshold wavelength in light.It says that the energy of electron emitted depends on wavelength of light...

Asked on 08/12/2021

1 answer

Wormhole Construction & "Jump Conditions"

Throughout the literature Wormholes are typically constructed by "Minkowski" or "Schwarzschild Surgery" (see e.g. Visser, Lorentzian Wormholes...), i.e. under quite simple and/or highly symmetric circumstances. In the former case, regions...

Asked on 08/11/2021 by Julian Moore

1 answer

Heat dissipation inside an extremely high inductive coil

Is it possible that for an extremely high inductive coil the oscillation paths for the electrons are so small that they can 'live' between atoms of the copper lattice without...

Asked on 08/11/2021

0 answer

Light and Gravity

The gravitational force does not affect the speed of light rather affects the frequency of light (hence light changes colors, red to blue and vice-versa).I know this has been verified...

Asked on 08/11/2021 by user92340

2 answer

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