Mellester
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Calculate Initial Velocity For Orbital (Gravity) Slingshot
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2 votes

If you are in a circular orbit what you need is a Hohmann transfer, from Wikipedia: In orbital mechanics, the Hohmann transfer orbit /ˈhoʊ.mʌn/ is an elliptical orbit used to transfer between two ...

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A paradox to Lenz's law
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The short answer is that there is a induced force on the magnet. This induced force will make the pendulum loose energy in the same proportions as there is electrical energy being generated. A good ...

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Detecting a photon without changing it: Does it break conservation laws?
1 votes

I dont now about this system but i have had a lecture about a similar non destructive measurement aperatus. they trap a photon in a cavity and have a atom move throw the cavity. right throw the ...

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Conservation of energy quick question
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1 votes

yes you can say that they energies are the same. And with energy we usually mean that the potential plus kinetic energy always remains constant. so kinetic energy can change and so does potential but ...

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Initial Velocity For Orbital (Gravity) Slingshot At Hit Moving Target
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Oke this link is a nice reference sheet for elliptical orbits. we are interested in two things the speed at perihelion The time it will take to reach aphelion The initial velocity is what OP wants ...

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How can a wave interfere with itself?
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In some field of research like quantum field theory, particles are but excitation of a field and therefore naturally get a wave like behavior. If you study the Maxwell equation you will find that in a ...

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Total energy of a quantum gas
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if you are dealing with N non-interacting particles, the total energy is just the sum of the individuals. However there is a catch because all these particles are identical you can exchange 2 of them ...

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How to show the invariant nature of some value by the group theory representations?
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short answer if $ \hat {S}^{-1} S = \mathbb{I}$ I can give you a general example of $\psi^\dagger\psi$ not being invariant. because for Dirac spinor $\psi$ whe have the following transformation ...

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How can kinetic energy be proportional to the square of velocity, when velocity is relative?
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Oke in order to understand this more intuitively lets calculate the following example. We have 3 rockets of 100 kg side by side floating in space. Rocket 1 and rocket 2 have the same speed and rocket ...

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Can effect of gravity be broken (counteracted) by electric force?
-1 votes

Short answer not really. There are 2 3 ways to cancel gravity, -one you create anti gravitation particles which no human scientist has ever produced, let alone observed. (or where they its own ...

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