PeroK's latest activity

In general, ##f^{-1}(f(z))## is not necessarily equal to ##z##. Can you see why?

AI copying art and music is national security?

If you are saying the answer is a), then you're wrong!

I think you’ve got it but I would have said it slightly differently, such as: "The bob+string can not reach the top of the circle...

If the AI companies are found to be illegaly using copyright material, why shouldn't they pay? You appear to make an a priori...

I'd like to see the evidence of the textbook(s) that say any such thing. Otherwise, it's just a vacuous statement.

Yes. A rigid structure will continue in a circle as long as it has sufficient KE to reach the top. The mass is constrained to move in...

okay, so you are saying that the string can only reach the top slack, with the given speed in the question, that too in a hypothetical...

It would be amazing!

It's a pulsar wind nebula, with shock waves and a jet aligned with rotation axis. Not a vortex or a cone of radiation of the type that...

If you still are stuck on that after all the above replies, consider the bob as it approaches the top of the circle. It would be moving...

The mass is not constrained to move in a circle. In fact, it can't reach the top of the circle and have no KE at that point.

You need the specific heat capacity of air and water. And also to calculate the mass of something based on its volume you need its density.

This is only for constant acceleration. The displacement is the (signed) area under a velocity-time graph. For constant acceleration...

The particle horizon refers to the current distance of the most distant (comoving) object that we can, in principle, observe today. The...