100% reflection refers to no loss of photons - there is no transmission. The energy loss is small and is usually ignored, and this is typically a...
Nothing, other than it's inconsistent with what you actually said:
The situation you describe, but applied to massive particles, is exactly how you "slingshot" a spacecraft to give it more energy, so this doesn't...
You cannot simultaneously ignore conservation of momentum and be talking about a real system or even an idealized situation that represents a real...
No, sorry, but this is wrong. This is physics 101 material. If you have this wrong you have no hope of discussing more advanced concepts. In the...
The wall recoils in one direction, while the ball recoils in the opposite direction. The wall, being much more massive, doesn't recoil very much....
The total energy of a massive particle is m0c^2/sqrt(1-v^2/c^2) Subtract the rest energy, m0c^2, and the rest is the kinetic energy in free space.
In your example, even with 100% elasticity, the ball loses a little energy to the wall/earth system. "The ball retains the same momentum but...
It's not you.
If momentum isn't conserved, then it's not something that occurs in nature. You said you think this occurs in nature. Do you have an example?
That doesn't mean infinite speed. Light is an electromagnetic wave, and space has a finite permittivity and permeability for electric and magnetic...
No, things without mass travel at c. Why do you think the speed would be infinite?
Poisonous to us, but not necessarily to everything.
You posted about a gravitational system with tides, objections and explanations were posted, and you basically ignored them. What's there to...
No, it's p=E/c Light has no rest mass.
F=dP/dt If there is no net external force, momentum cannot change. If it were otherwise, you could pick yourself up by your bootstraps.
Momentum is a vector. The momentum before the reflection is E/c. The momentum after the reflection is -E/c. The change in momentum of the photon...
Naval vessels have reactors that are many tens of megawatts (thermal). Land-based plants are several hundred MWth, up to a thousand MWth or so.
Note that mgh is only valid where g can be assumed constant. As for GMm/r, that's valid everywhere, for a uniform mass distribution, as long as M...
PE=-GMm/r The escape energy is the same magnitude, but of opposite sign.
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