PeroK's latest activity
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PeroK replied to the thread Member and Mentor Appreciation Thread.There's only one of me. AI can proliferate and multi-task. -
PeroK replied to the thread Undergrad Relational event horizons?.In flat spacetime (Special Relativity) it's conventional to talk about "observers" or "inertial observers". This often means...
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PeroK replied to the thread Undergrad Derive the Lorentz transformation in Minkowski four-dimensional spacetime spacetime.I'm one of the few students, it seems, that finds spacetime diagrams confusing. The problem is that the diagram you have drawn is in...
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PeroK reacted to Xinze's post in the thread Undergrad Derive the Lorentz transformation in Minkowski four-dimensional spacetime spacetime with
Like.
I attempted to draw a Minkowski four-dimensional spacetime diagram, using frame K as the reference frame. I identified a point A with... -
IMO, there are some good books that attempt to motivate the concepts of SR and GR with minimal mathematics. They are "Relativity...
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PeroK replied to the thread Undergrad Relational event horizons?.Whoever then has the effrontery to study physics while neglecting mathematics should know from the start that he will never make his...
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I have another point to make: Modern physics is very much guided by the mathematics, often in direct opposition to the "intuition" of...
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It's rubbish, in short. That's why it doesn't make sense. This is analogous to saying that a hill is steep because the contour lines on...
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PeroK replied to the thread High School Does acceleration affect impact energy vs constant velocity?.The force of an impact depends on the elascticity of the materials, as this significantly affects the time of the collision. For hard...
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PeroK reacted to ohwilleke's post in the thread Undergrad Question of accuracy of galactic collision simulations with Like.
Astronomy/cosmology simulations do two main things: 1. They rely on a set of assumptions about the physics involved, which are physics...
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PeroK replied to the thread High School Does acceleration affect impact energy vs constant velocity?.What is your definition of impact energy? The kinetic energy of the 3kg mass is defined as ##\frac 1 2 mv^2##. That depends only on...
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PeroK reacted to jbriggs444's post in the thread High School Does acceleration affect impact energy vs constant velocity? with
Informative.
You have had opinions offered both ways. Both opinions are accurate. It depends on the details. Primarily on the duration of the... -
PeroK replied to the thread High School Does acceleration affect impact energy vs constant velocity?.That's a specific calculation for each problem. The impact in a particle collision is usually assumed to be of a sufficiently short...
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PeroK replied to the thread High School Does acceleration affect impact energy vs constant velocity?.It depends whether the force producing the acceleration is maintained throughout the collision. For example, if you have a vertical...